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VC-E1/16, VC-E1/12 - RADProductsOnline

1. sis 3 8 3 6 Configuring El Data Port Parameters sis 3 11 Configuring El Data Port Physical Parameters cccceecceeeeeeeeeeeeeeeaeeeeeeesaeeeeeeeaaaes 3 11 Configuration Parameters for Framed Modes 3 12 Specific Configuration Parameters for Unframed Mode n se 3 14 Configuring Backup for the Network Side Connection 3 14 Overview of Backup Function ss 3 14 Configuring the Backup Function iii 3 15 3 7 Configuring Parameters Related to SDH Transport 3 15 Configuring VC 12 Path Parameters ss 3 16 Mapping the VC E1 16 Ports to VC L2S ccc cccccccccccccccececeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeess 3 17 3 8 Configuring Connections for Voice Ports sis 3 17 Connection Parameters Configuration Sequence 3 18 Preliminary Configuration Steps issu 3 18 Configuring Bundle Parameters iii 3 20 Configuring Bundle Routing Parameters ccceecceeeeee eee eeeeeeeaeeeeeeeaeeeeeeesaaeeeenaa 3 20 Configuring General Bundle Parameters 0ccceeeeeeeeee eee eeeeeeeaeeeeeeesaeaeeeesaaeeeeenaa 3 23 Configuring Bundle Voice Parameters is 3 25 3 9 Configuring VC E1 16 Port Timeslot Assignment sssssssssseesetertttrrttrrrrrrrrrrrrrrrrrrerrn 3 33 Configuring Timeslot Assignment for Voice Ports aa ii Gmux 2000 VC 12 16 Ver GM 2000 Ver 3 2 Installation and Operation Manual Table of Contents
2. In this case the data ports operate in pairs In each pair one port serves as the main primary port and the other as backup secondary port At any time only one port of each pair carries traffic As long as the primary port can carry the traffic it is automatically selected as the active port In case of a problem on the link or in the port hardware the traffic is automatically switched to the backup port Switching is revertive that is when the problem is corrected the traffic is automatically returned to the primary port The port pairs are as follows e When using the external data ports one port can be configured as Primary port and the other as Backup Secondary The total bandwidth on the network connection is thus the bandwidth available on a single port 1984 kbps for framed modes 2048 kbps for the unframed mode e When the network connection is through the SDH ports ports 1 and 2 can serve as Primary ports and the other two ports 3 and 4 as Backup Secondary The user can select the desired backup port for each primary port and freely select the secondary port for each one for example port 3 can be configured as secondary port for either port 1 or port 2 but cannot be configured as secondary to port 4 The total bandwidth on the network connection is thus the bandwidth available on two ports The maximum number of active ports is always 2 Therefore to configure the physical parameters of the ports 3 and
3. Manipuler des produits sous tension R gles g n rales de s curit Ne pas toucher ou alt rer l alimentation en courant lorsque le c ble d alimentation est branch Des tensions de lignes peuvent tre pr sentes dans certains produits m me lorsque le commutateur s il est install est en position OFF ou si le fusible est rompu Pour les produits aliment s par CC les niveaux de tension ne sont g n ralement pas dangereux mais des risques de courant peuvent toujours exister Avant de travailler sur un quipement connect aux lignes de tension ou de t l communications retirez vos bijoux ou tout autre objet m tallique pouvant venir en contact avec les pi ces sous tension Sauf s il en est autrement indiqu tous les produits sont destin s tre mis la terre durant l usage normal La mise la terre est fournie par la connexion de la fiche principale une prise murale quip e d une borne protectrice de mise la terre Si une cosse de mise la terre est fournie avec le produit elle devrait tre connect e tout moment une mise la terre de protection par un conducteur de diam tre 18 AWG ou plus L quipement mont en ch ssis ne devrait tre mont que sur des ch ssis et dans des armoires mises la terre Branchez toujours la mise la terre en premier et d branchez la en dernier Ne branchez pas des c bles de t l communications un quipement qui n est pas mis la terre Assurez vous que
4. Selecting Individual TiMe Slotsisiccicsscnsceteasisedavetvasseceedautsaaeuestdadenow aed aeiia aia 3 33 Assigning a Group of Timeslots to a Bundle 3 34 Assigning a Whole Port to a Bundle sseeesssssrisesesssrrrrrrrresessrrrrrrrrreserrrrrrrrreeen 3 35 Disconnecting a Bundle from a Port 3 34 Configuring Timeslot Assignment for Data Ports 3 30 Selecting Individual Timeslots ss 3 36 Assigning all the Port Timeslots to a Subchannel 3 36 Disconnecting a Subchannel from a Port ss 3 37 3 10 Configuring Inband Management via VC E1 16 Data Ports 3 37 3 11 Configuring N 1 Protection cccceccccseeeecseeeeeeeeeseeeeseeeeseeeesseeeesesesseeeeseseseeeesseeersaes 3 38 Chapter 4 Troubleshooting and Diagnostics GLa OVENICW sigst eenaa tee lattes en ten nn di Rate tn aa aA EE a1 4 2 Performance MONnItOrn sts iiaiieedvn a aa aa Gi Bes A aN aE 4 1 Accessing the Performance Monitoring Functions ss 4 2 Displaying Physical Layer Performance Monitoring Data 4 2 Displaying VC E1 16 Physical Layer Statistics 4 2 Displaying VC E1 16 Physical Layer HDLC Transport Status Data 4 5 Displaying VC E1 16 Physical Layer Voice Timeslot Status Data 4 8 Displaying VC E1 16 Physical Layer Voice Port Signaling Status 4 11 Displaying VC E1 16 Physical Layer Bandwidth Control Status Data 4 11 D
5. VC E1 16 VC E1 12 GM 2000 Ver 3 2 Connecting Cables 2 7 Chapter 2 Installation and Operation Installation and Operation Manual LINK E1 Data Port Connectors The two external El data ports of the VC E1 16 and VC E1 12 modules have balanced or unbalanced ITU T Rec G 703 interfaces The interface type is software selectable Each LINK port has one RJ 45 eight pin connector designated LINK 1 or LINK 2 respectively The connector is used for both the balanced and unbalanced interface Connector wiring is listed in 7ab e 2 4 Table 2 4 LINK Connector Pin Functions Pin Function Balanced Interface Function Unbalanced Interface 1 Receive Data input ring Ground 2 Receive Data input tip Receive Data input 3 Not connected Not connected 4 Transmit Data output ring Ground 5 Transmit Data output tip Transmit Data output 6to8 Not connected Not connected The connection to equipment with balanced interface is made by any standard RJ 45 to RJ 45 cable In general when using the unbalanced interface it is necessary to connect the RJ 45 connector to equipment using BNC connectors RAD offers as an optional accessory an adapter cable CBL RJ45 2BNC E1 X with one RJ 45 plug at one end and two BNC female connectors at the other end Adapter Cables Adapter Cable CBL TELCO RJ45 16E1 Adapter cable CBL TELCO RJ45 16E1 is used to connect to the VC E1 16 voice channels when all the channels use balanced interfaces Figure 2
6. 8 El channel 4 receive input center contact 40 El channel 4 receive input ground 9 El channel 5 transmit output center contact 41 El channel 5 transmit output ground 10 El channel 5 receive input center contact 42 El channel 5 receive input ground 11 El channel 6 transmit output center contact 43 El channel 6 transmit output ground 12 El channel 6 receive input center contact 44 El channel 6 receive input ground 13 El channel 7 transmit output center contact 45 El channel 7 transmit output ground 14 El channel 7 receive input center contact 46 El channel 7 receive input ground 15 El channel 8 transmit output center contact 47 El channel 8 transmit output ground 16 El channel 8 receive input center contact 48 El channel 8 receive input ground 17 El channel 9 transmit output center contact 49 El channel 9 transmit output ground 18 El channel 9 receive input center contact 50 El channel 9 receive input ground 19 El channel 10 transmit output center contact 51 El channel 10 transmit output ground 20 El channel 10 receive input center contact 52 El channel 10 receive input ground 21 El channel 11 transmit output center contact 53 El channel 11 transmit output ground 22 El channel 11 receive input center contact 54 El channel 11 receive input ground 23 El channel 12 transmit output center contact 55 El channel 12 transmit output ground 24 El channel 12 receive i
7. Destination IP Specifies the destination IP address of the bundle Make sure to select a valid address that can be reached through the port configured in the Exit Port field considering the value selected for the Next Hop parameter The VC E1 16 source IP address is the CONTROL module host IP address configured by means of the Configuration gt System gt Host IP screen Type in the desired IP address using the dotted quad format four groups of digits in the range of O through 255 separated by periods Default 0 0 0 0 Next Hop Specifies an IP address to which the bundle Type in the next hop IP address using the packets will be sent to enable reaching the dotted quad format destination IP address This is usually the To use the default gateway leave this field address of an IP router port at the default value 0 0 0 0 You need to specify a next hop IP address Default 0 0 0 0 only when the destination IP address is not within the IP subnet that can be reached through the port configured in the Exit Port field 3 20 Configuring Connections for Voice Ports VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration Parameter Function Values Source CBID The function depends on the PSN Type UDP IP Selects the local endpoint source The supported range is 1 to 8063 Each circuit bundle identifier CBID at the local bundle must have a unique source CBID endpoint source of th
8. m Other Please list the exact page numbers with the error s detail the errors you found information missing unclear or inadequately explained etc and attach the page to your fax if necessary Please add any comments or suggestions you may have Distributor End user VAR Other You are QOagdaa Who is your distributor Your name and company Job title Address Direct telephone number and extension Fax number E mail Publication No 358 209 07 08 International Headquarters 24 Raoul Wallenberg Street Tel Aviv 69719 Israel Tel 972 3 6458181 Fax 972 3 6498250 6474436 E mail market rad com North America Headquarters 900 Corporate Drive Mahwah NJ 07430 USA Tel 201 5291100 Toll free 1 800 4447234 Fax 201 5295777 E mail market radusa com www rad com data communications The Access Company
9. MFC complies with EIA TIA 464B Configurable MFR2 MFC relaying parameters Group Ill fax relay at rates of 4 8 to 14 4 kbps or Transmission of voiceband fax signals V 22 V 22bis V 32 V 32bis V 34 up to 21 6 kbps or Transmission of voiceband modem signals ITU T Rec G 711 with A law companding ITU T Rec G 711 with u law companding ITU T Rec G 726 at 32 kbps ITU T Rec G 726 at 24 kbps Support for ITU T Rec Q 50 Annex A and Annex B user selectable with selectable call rejection threshold Enabled disabled on a per port basis Random discarding of packets when link bandwidth utilization exceeds selectable threshold Available on all voice ports Modem call rejection when link bandwidth utilization exceeds selectable threshold Configurable on a per port per connection basis Technical Specifications 1 31 Chapter 1 Introduction Installation and Operation Manual Timing Module Timing El Port Transmit Path Timing Loopback timing transmit timing locked to clock recovered from the received E1 signal e Gmux 2000 nodal timing E1 Port Receive Path Timing Locked to clock recovered from the received El signal must be equal to transmit clock rate General Module Indicators ACT green Indicator e Flashes during module initialization and during software downloading e Lights steadily after initialization is successfully completed if no fault is detected in the module FLT red Indicator Hardware fault de
10. Pure tones are also used for various functions for example 2000 Hz tones are sometimes used for continuity checks COT The waveform of such signals is very different from speech waveforms therefore most compression algorithms distort them for example distortion of DTMF signals transmitted as analog signals through a compressed voice channel may cause errors to occur in the detection of the dialed digits by PBXs and other equipment The method used to overcome this problem is referred to as relaying when relaying is enabled the transmit path demodulates the signal to retrieve the encoded data and transmits the data through the link the receiving end then synthesizes a clean signal carrying the data for transmission to the user s equipment For example to enable reliable transmission of DTMF signals the DSP detects incoming DTMF signals independently for each timeslot and identifies the dialed digits The detected digits are digitally transmitted through the link to the far end where clean digital representations of DTMF signals are synthesized and inserted into the decompressed data stream sent in the corresponding timeslot While inband signaling is received the voice path is disconnected to prevent interference by signals transmitted through the regular processing path The method used for DTMF relaying is also used to transfer transparently call progress tones VC E1 16 modules always relay DTMF signals using preconfigur
11. collects the payload and sends it to the main processor for further processing separation of signaling and compressed audio The main processor provides the information to be sent to the network and it also handles the information received from the network The connection between the data ports and the main processor is made by a timeslot cross connect matrix 1 12 Functional Description VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 1 Introduction The data ports support the following framing modes e Basic G 704 framing mode with or without support for CRC 4 in accordance with ITU T Rec G 706 with timeslot O terminated at each port This mode provides 31 payload timeslots per port total bandwidth available for payload 1984 kbps and has the advantage that it supports channelizing for point to multipoint applications The number of subchannels that may be defined on each port is up to 10 the minimum is 1 Each subchannel operates essentially as a transparent pipe for a preconfigured fraction of the total payload e Unframed mode This mode provides 32 payload timeslots per port and therefore enables full utilization of link bandwidth 2048 kbps but can be used only for point to point applications no channelizing the whole port is handled as a single subchannel The data ports have two sets of interfaces e External physical interfaces terminated in the LINK connectors for connecting
12. ports the maximum total number of active E1 voice ports is 8 3 8 Configuring El Voice Port Parameters VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration 3 Configure the port parameters in accordance with the prescribed configuration data Note that some parameters are not applicable when the voice ports are connected to SDH ports 4 Repeat the procedure for each voice port You can use the F and B keys to select the next previous port Table 3 2 EI Voice Port Physical Layer Parameters Parameter Function Values Channel ID Selects the voice port to be configured 1 to 16 for VC E1 16 1 to 12 for VC E1 12 Default 1 Admin Status Used to enable disable the flow of NC The flow of traffic is disabled This state traffic through the selected port should be selected while the port configuration has not yet been completed or when it is necessary to stop traffic flow through the port CONNECTED The flow of traffic is enabled Default CONNECTED Idle Code Selects the code transmitted to fill idle The available selections are 00 to FF hexa unused timeslots in the El frames Default 7F transmitted through this port toward the equipment connected to the port Make sure to check that a valid idle code is selected Restoration Time Used to change the frame CCITT Complies with ITU T Rec G 732 synchronization algorithm to reduce TR 62411 Similar to the requiremen
13. tous les autres c bles sont d branch s avant de d connecter la mise la terre 7 y of un Connexion au courant du secteur Assurez vous que l installation lectrique est conforme la r glementation locale Branchez toujours la fiche de secteur une prise murale quip e d une borne protectrice de mise la terre La capacit maximale permissible en courant du circuit de distribution de la connexion alimentant le produit est de 16A Le coupe circuit dans l installation du b timent devrait avoir une capacit lev e de rupture et devrait fonctionner sur courant de court circuit d passant 35A Branchez toujours le c ble d alimentation en premier l quipement puis la prise murale Si un commutateur est fourni avec l quipement fixez le en position OFF Si le c ble d alimentation ne peut pas tre facilement d branch en cas d urgence assurez vous qu un coupe circuit ou un disjoncteur d urgence facilement accessible est install dans l installation du b timent Le disjoncteur devrait d connecter simultan ment les deux p les si le syst me de distribution de courant est de type IT Connexion d alimentation CC Sauf s il en est autrement sp cifi dans le manuel l entr e CC de l quipement est flottante par rapport la mise la terre Tout p le doit tre mis la terre en externe A cause de la capacit de courant des syst mes alimentation CC des pr cautions devraient
14. 16 VC16E1_UE_NS E1 voice ports same as VC 12 ts 17 to 21 above ports pan VC16E1_US_NE VC 12 ports same as coul El data ports 1 or 2 VC16E1_US_NS 5 Note VC 12 ports same as VC 12 ts 17 to 21 above pom ot Select the type of interval current interval or a previous interval When you select the current interval you can also see the current number of valid intervals If the number of valid intervals is less than 96 it will increase by 1 when the current interval expires and a new interval is opened however you will see the change only after refreshing the display 6 Select a specific port The range of ports depends on the VC E1 16 model and type of ports as listed in 7ab e 4 1 After selecting a specific port you will see the requested statistics data The displayed parameters are explained in 7ab e 4 2 VC E1 16 VC E1 12 GM 2000 Ver 3 2 Performance Monitoring 4 3 Chapter 4 Troubleshooting and Diagnostics Installation and Operation Manual Parameter Interval Number Valid Intervals When you display data on previous intervals you can see the port data for other valid intervals by entering a different interval number without having to go again through the whole selection process Table 4 2 Physical Layer Statistics Parameters Description The number of the 15 minute interval to be displayed in the range of 1 to 96 This parameter is available only for previous inter
15. 16 5 4 16 E1 I 2 Et 16 E1 I 2E1 i Central Office Up to 112 E1s Remote Call Center a 0x E A Vmux 2100 PBX or Media Gateway Up to 7 Active E1 Remote Call Center PBX or Gmux 2000 PSTN Switch with VC E1 16 Modules E gt Vmux 2100 Figure 1 4 Remote Call Centers Main Link Hot Standby Mode When equipped with VC E1 16 modules the maximum capacity of the Gmux 2000 is 112 El trunks using only one El link to connect a group of up to 16 El trunks to each call center The connection to the Vmux 2100 units is made over the external data ports In this application a separate VC E1 16 module is used for each remote location in this way availability can be greatly enhanced by using the backup function each El link can be backed up by using the other data port VC E1 16 VC E1 12 GM 2000 Ver 3 2 Typical Applications 1 7 Chapter 1 Introduction Installation and Operation Manual Using the point to multipoint capability of VC E1 16 modules enables connecting to an even larger number of remote locations because each VC E1 16 data port can connect to up to 10 separate locations VC E1 16 also supports inband management of the Vmux 2100 units in Figure 1 4 a network management station for example RADview SC Vmux connected to a GbE port of the Gmux 2000 unit can manage inband the Vmux 2100 units connected via VC E1 16 data ports Voice Trunking over
16. 16 offers additional capabilities e Adaptive compensation for delay variations in voice packet transport over the network The compensation is performed by inserting a Jitter buffer a special mechanism automatically adjusts the Jitter buffer size to the actual delay variations and thus keeps the end to end delay in the voice path to the minimum possible e Adaptive echo canceling for near end reflections echo delay up to 32 msec The echo canceling performance complies with ITU T Rec G 168 requirements and is user selectable for each bundle Echoes are generated at the points the transmission path changes from 4 wire to 2 wire Therefore echo canceling is needed only when 2 wire equipment phones fax modems are used at the end points served by this bundle Only one echo canceller should be used at each end point that connects to 2 wire equipment Therefore if another echo canceller is already inserted in the signal path of a bundle for example at a PBX the echo canceling function of the VC E1 16 should be disabled for that bundle e Control over the transmit and receive levels of the audio path the receive path transmits towards the local user s equipment for example PBX and the transmit path receives the signal from the local equipment This function can be used to compensate for attenuation in the audio paths For example when a local subscriber is connected by a long line to the PBX you can increase the input and outp
17. 3 2 Typical Applications 1 9 Chapter 1 Introduction Installation and Operation Manual Up to 112 E1 Packet E1 _ GbE Switched GbE Network j Gmux 2000 4 Gmux 2000 with VC E1 16 and with VC E1 16 and GbE Modules GbE Modules Vmux 2100 E1 Vmux 2100 E1 Figure 1 8 Interoperability with Vmux Equipment over PSN Networks 1 4 Functional Description Functional Block Diagram Figure 1 9 shows the functional block diagram of the VC E1 16 module The functional block diagram of the VC E1 12 module is similar except that it has only 12 El voice ports See description of operating modes in the VC 1 16 Operating Modes section on page 7 16 1 10 Functional Description VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 1 Introduction 1 16 E1 Voice E1 External Port Framers Voice Mode Voice Ports Selection Ports N a Signaling gt Interface TAR a Processor Bus E Interface 5 External Data Ports Data E1 Port Framers Times ot slocti pata Connect Selection Ports v Control and 2 i Eyes Status Signals Management 3 Timing and ce Clock Signals lt Clock z Generation 9 o F N Lo 72 a E fo 2 o H o H Figure 1 9 VC E1 16 Module Functional Block Diagram The operation of the main VC E1 16 subsystems is described below User Interfacing Subsystem The user interfacing subsystem includes 16 voi
18. 4 first you must enable backup and configure these ports as secondary ports for the main ports 1 and 2 3 14 Configuring El Data Port Parameters VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration Since ports 3 and 4 can serve only as secondary ports they are enabled only when configured as backup for a primary port For example e f port 1 is configured as regular port no backup and port 3 is configured as secondary port for port 2 port 4 is automatically closed e f port 2 is configured as regular port no backup and port 4 is configured as secondary port for port 1 port 3 is automatically closed Configuring the Backup Function gt To configure the backup parameters 1 Configure the physical port parameters for ports 1 and 2 Make sure to select Connected for all the ports 2 Start backup configuration by selecting the port that will serve as the main Primary port of the first pair 3 Select ENABLE for Backup Status The currently selected port becomes Primary port The port function is indicated by the Backup Port Type field which appears on the screen 4 Anew parameter Backup Port appears Selecting this parameter displays a Backup Port selection screen which presents the available alternatives in accordance with the VC E1 16 operating mode 5 When using SDH ports if necessary repeat the procedure for the second pair of ports 6 At this stage you can co
19. 4 4 presents the HDLC transport status monitoring parameters for data ports Rx identifies the receive direction from the network to the VC E1 16 port 7x identifies the transmit direction from the VC E1 16 port to the network Unless a specific time interval Is listed the displayed values represent the total accumulated on the HDLC channel since the equipment has been last turned on or since the last module reset or counters clear command whichever occurred last Table 4 4 HDLC Transport Status Monitoring Parameters for Data Ports Parameter Rx Total Frames Description Total number of received protocol packets Rx Total Bytes Total number of received protocol data octets Rx 60 sec Frames Number of protocol packets received during the last 60 seconds Rx 60 sec Bytes Number of protocol data octets received during the last 60 seconds RX LG Err Total number of received protocol packets that had length violations Rx NO Err Total number of received protocol packets which were not octet aligned Rx CR Err Total number of protocol packets received with CRC errors Rx AB Err Total number of received protocol packets with abort sequence violations 7 or more consecutive ones Rx OV Err Total number of receive buffer overrun events Rx Busy Count Total number of times the received protocol packets were not processed because no resources were available Tx Total Frames Total number of p
20. E1 16 VC E1 12 Modules 9 Quick Start Guide Installation and Operation Manual Configuring Timeslot Assignment for Voice Ports Use Config gt Connection gt TS Assignment gt To assign individual voice port timeslots l 2 3 Select existing Bundle range is 1 to 2000 To assign individual timeslots select Ts Type NC Timeslot is not connected to the selected bundle VOICE Voice timeslot timeslot with CAS information HDLC 1 Timeslot whose payload is interpreted as HDLC data timeslot that carries CCS data SS7 1 Timeslot whose payload is interpreted as being signaling data per Signaling Scheme 7 Trans Transparent timeslot that is a timeslot whose payload is transferred without any processing to the far end For connections ending at a Vmux Voice Trunking Gateway port for each timeslot specify the destination port and timeslot Select the destination port of the timeslot at the Vmux side using Dest Port Select the destination timeslot at the Vmux side using Dest Ts gt To assign a range of timeslots to a bundle l Ow E N ae S 7 Select Assign TS Range to Bundle Select existing Bundle range is 1 to 2000 Select TS Type and specify the type assigned to all the timeslots in the group Select Dest Port and enter the prescribed far end port number Select From Ts and specify the first timeslot in the range to be assigned Select Num of TS and enter the number of timeslots to be conne
21. ETES 1 23 CCS HANGING ER D a A 1 23 Packet Processing issssiiieeiseeeeerreeneeeereeneeeseereees 1 24 Estimating Bandwidth Requirements ss 1 24 Preventing Excessive Bandwidth CONSUMPTION 0ccceeeeeeeeeeeeeeeeeeeeaeeeeeeeaaeeees 1 25 Processing of Transparent TIM SIOtS 0 cceeeceeeeeee ee eee tees eae eeeeeeaaeeeeeeaaaeeeeeeaaaeeeeeaea 1 26 DI SNOSUICS iris inona r E EEEE E E eE Ea aaeoa 1 27 1 5 Technical Specifications sisi 1 27 User Side Voice Ports cece eee eee eee ceca eee sea aa eee saan ee saaaa eee saaaa ee sesaaeeseeaa 1 28 Network Side Data POTTS 2 scsiverasesvedetuetanerces stdeatay insua aaia iina dana aaa 1 28 Gmux 2000 VC 12 16 Ver GM 2000 Ver 3 2 i Table of Contents Installation and Operation Manual Voice Transmission Parameters ou cece cee eee ec eee eeeeeeeeeeeeeeeueaeeseseueeeeesueeeeaveueeeeeeaeees 1 29 TWIN nse inasnan MAN RD ep es evi hin ia aed SI ele 1 32 GOM ial sec cevcdscesi en nt nr dines thee na queen ehadiuee center nes titine et ene rene ren Res ue 1 32 Chapter 2 Installation and Operation 2 D SALON ee alate a el dede at aa A ITS 2 1 2 2 Installing the Module sise 2 2 Selecting Module Operating Mode sis 2 2 Installing a VC E1 16 Module ssssssseeseeeseeeeeeeeeeeeeeess 2 3 Removing a VC EL LO MOUs sisssscevossgsctseseesavedsagssecesse devon dsasuiensneseseu yeas stesduegentenccs 2 4 2 3 Connecting Cables iiisssiieieeieieeeereereeeere
22. Multiple El Streams Figure 1 5 shows a Gmux 2000 equipped with VC E1 16 modules that provides voice trunks between two MSCs with STM 1 interfaces over E1 infrastructure either as a replacement for access to SDH infrastructure or when no SDH infrastructure is available The maximum number of El trunks depends on the desired protection level for the STM 1 link to each MSC e When only one STM1 module is used line redundancy only the maximum number of El trunks supported by one Gmux 2000 chassis is 96 e When two STM1 modules are used line and hardware redundancy the maximum number of El trunks supported by one Gmux 2000 chassis is 80 VC E1 16 also supports inband management of the Gmux 2000 units in Figure 1 5 a network management station for example RADview SC Vmux connected to a GbE port of one Gmux 2000 unit can manage inband the other Gmux 2000 unit via the VC E1 16 data ports 2 upisa VC E1 16 Up to 10 or 12 E1s Compressed MSC Gmux 2000 Gmux 2000 MSC with VC E1 16 Modules with VC E1 16 Modules Backup Figure 1 5 Voice Trunking over Multiple E1 Streams Main Link Redundancy Mode Voice Trunking over STM 1 Link Figure 1 6 shows a Gmux 2000 equipped with VC E1 16 modules that provides voice trunks from a remote location over an STM 1 link 1 8 Typical Applications VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 1 Introduction Using voice compression redu
23. Super Tandem Enable disable detecting whether voice data ENABLE Detection enabled In this case arriving on this bundle has already been the data is not processed that is it is not compressed by another VC E1 16 or Vmux Voice decompressed and recompressed in Trunking Gateway order to preserve voice quality This function is needed at intermediate stations along the bundle transmission path When ENABLE is selected it is not possible to select G 711 A Law or G 711 u Law for the Coder Rate parameter DISABLE Detection disabled You can safely use this selection when the voice port associated with this bundle cannot receive compressed voice Default DISABLE Echo Canceller Enable disable the echo canceller function for ENABLE The echo canceller function is this bundle enabled Echo cancelling is needed only when 2 wire DISABLE The echo canceller function is equipment phones fax modems are used at disabled the end points served by this bundle Default ENABLE Only one echo canceller should be used at each end point that connects to 2 wire equipment Therefore if another echo canceller is already inserted in the signal path for example at a PBX disable the echo canceller Coding Selects the voice companding law for this bundle A Law A law the standard companding A law or p law in accordance with ITU T Rec law for El trunks G 711 U Law u law the standard companding law for T1 trunks You may want
24. Trace Specifies the path trace label This parameter is relevant only when J2 Rx Path Trace and or J2 Tx Path Trace is ENABLE Alphanumeric string of 15 characters If not all of the 15 characters are needed for the prescribed label make sure to add spaces up to the required number of characters Default Empty string Mapping the VC E1 16 Ports to VC 12s Each VC E1 16 port with Connect State set to Connected must be mapped to the prescribed VC 12 on the prescribed STM1 module port s Backup secondary ports are mapped independently of the primary ports For this purpose use Config gt Physical Layer gt 1 0 gt Telecom Assignment for the prescribed STM1 module s For detailed instructions refer to the Gmux 2000 Installation and Operation Manual 3 8 Configuring Connections for Voice Ports The VC E1 16 voice ports traffic is handled in accordance with the connection parameters defined by the user For a full description of connection parameters and detailed configuration instructions refer to the Gmux 2000 Installation and Operation Manual In addition to connection configuration tasks the main VC E1 16 physical layer configuration screen provides two related utilities e Utility for deleting all the bundles currently configured to serve the voice ports of this VC E1 16 module It is recommended to delete the bundles before removing the module and also before preparing new traffic assignments for this module VC
25. VC E1 16 modules installed in the chassis VC E1 16 operating parameters are determined by commands received from the Gmux 2000 CONTROL module The CONTROL module can also download new software to the module when the Gmux 2000 software is updated VC E1 16 modules also support inband management of remote Gmux 2000 units a remotely located network management station for example RADview SC Vmux connected to a GbE port of one Gmux 2000 unit can manage the other Gmux 2000 units interconnected to it via VC E1 16 data ports Vmux 2100 Voice Trunking Gateways connected to VC E1 16 ports can also be managed in the same way The module supports comprehensive diagnostics including power up self test local and remote loopbacks and test tone injection for the voice ports and remote loopbacks for the network ports It also collects comprehensive performance statistics that can be uploaded via TFTP to a management station such as the RADview SC Vmux for analysis Front panel indicators indicate at a glance the status of each module port 1 2 Physical Description Each VC E1 16 or VC E1 12 module occupies a single I O slot in the Gmux 2000 chassis The modules can be installed in slots 10 1 to 10 5 10 7 and 1O 9 The only internal setting is the selection of the module operating mode all the module configuration parameters are determined by software Module Panels 1 4 Figure 1 1 shows typical VC E1 16 and VC E1 12 module panels The panel inc
26. a wide range of signaling protocols This includes CAS and R2 signaling transferred end to end either transparently or after translation in accordance with user specified profiles as well as optimized HDLC based transfer of CCS protocols such as ISDN QSIG 1 2 Overview VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 1 Introduction Signaling Scheme 7 SS7 etc The CCS timeslots are user selectable independently for each voice port with a maximum of two timeslots per port VC E1 16 and VC E1 12 have both TDM and packet ports e The TDM ports comprise a set of 16 respectively 12 voice user side E1 ports and a separate set of 2 data network side El ports e The packet ports comprise 2 network side ports for connection to Gmux 2000 internal packet buses To provide maximum application flexibility and avoid the need for additional equipment each set of TDM ports has both external ports with ITU T Rec G 703 interfaces located on the module panel and internal ports that can be connected via the Gmux 2000 telecom buses to the SDH ports located on the STM1 modules that may be installed in the chassis each internal module port can be independently mapped to any desired VC 12 The maximum number of VC E1 16 and VC E1 12 modules that may be installed in a Gmux 2000 chassis is 7 Note however that 2 out of the 7 Gmux 2000 1 0 slots that support VC E1 16 modules also support STM1 modules and therefore th
27. and 9 of the Gmux 2000 chassis 2 Check that the fastening screws of the two sides of the module are free to move 3 Insert the module in its chassis slot and slide it backward as far as it goes see Figure 2 2 Figure 2 2 Installing a VC E1 16 Module VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installing the Module 2 3 Chapter 2 Installation and Operation Installation and Operation Manual 4 Refer to Figure 2 3 and press the extractor handles toward the center of the module to fully insert its rear connector into the mating connector on the backplane Secure the module by tightening its two fastening screws The module starts operating as soon as it is plugged into an operating enclosure At this stage ignore the alarm indications Figure 2 3 Securing the VC E1 16 Module to the Chassis Removing a VC E1 16 Module gt To remove a VC E1 16 module l 2 3 Fully release the two screws fastening the module to the chassis Press the release buttons of the two extractors see Figure 2 4 A and push the extractor handles in the direction shown in Figure 2 4 B to disengage the rear connector Pull the module out 2 4 Installing the Module VC E1 16 VC E1 12 GM 2000 Ver 3 2 Chapter 2 Installation and Operation Installation and Operation Manual 4 Removing a VC E1 16 Module Figure 2 2 5 Installing the Module VC E1 16 VC E1 12 GM 2000 Ver 3 2 Chapte
28. any remote user s equipment that connects through the network to the local data port including the SDH transmission plant the STM1 module the internal Gmux 2000 paths connecting the user s equipment to the local VC E1 16 data port and the E1 framer of the VC E1 16 data port In both configurations the test signal is provided by the remote equipment connected to the local VC E1 16 through the tested data port any such equipment must receive its own transmission To ensure that the user s equipment connected to the tested port is capable of providing a good signal the remote data port loopback should be activated on the local VC E1 16 port only after checking that the remote user s equipment and each equipment along the path operates normally while its own local loopback is activated and all the equipment along the path 4 4 Troubleshooting Instructions Preliminary Actions If the problem is detected the first time the module is put into operation perform the following preliminary checks before proceeding Check for proper module installation and correct cable connections in accordance with the system installation plan Check the module configuration parameters in accordance with the specific application requirements as provided by the system administrator If the Gmux 2000 nodal system clock is to be locked to the clock recovered from one of the ports of the VC E1 16 module make sure a suitable fallback clock source is conf
29. at the local port Enable new calls or Disable reject new calls Q50 Remote State The Q 50 bandwidth control status at the far end equipment connected to the local port Enable new calls or Disable reject new calls Modem VBD State The current state of the call restriction function for voiceband modem calls Enable calls or Disable block calls because the current number of active voiceband modem calls equals the maximum user configured number of voiceband modem calls Modem Relay State The current state of the call restriction function for modem calls using relaying Enable calls or Disable block calls because the current number of active relay mode modem calls using relaying equals the maximum user configured number of relay mode modem calls Displaying VC E1 16 Physical Layer Voice Timeslot Status Data The voice timeslot status monitoring function provides detailed information on the traffic carried by any voice timeslot transported by the VC E1 16 including traffic statistics and timeslot utilization data and also data regarding the status of the internal VC E1 16 digital signal processor DSP that provides voice compression services for the selected timeslot This capability provides a powerful tool for analyzing DSP condition voice channel service quality and for monitoring in real time the timeslot traffic By resetting the status data at the desired instant it is possible to ensure that only current
30. configuring a TDMoIP bundle for compressed voice This is the only type of bundle that can be connected to VC E1 16 ports 2 Select PSN Type and then select the type of packet switched network that will be used to transport the bundle payload UDP IP UDP over IP Note f you need to know the number of the source UDP port of a bundle you can tind it as follows all numbers are in hexadecimal notation UDP Source Port 2000 Destination Bundle Number This means that all the UDP ports numbers are higher than 2000 hexa that is 8192 decimal MPLS ETH MPLS over Ethernet 3 Select Connection Configuration and then select Function to select the packet structure version The available options depend on the selected PSN type The options available for UDP IP networks are as follows a TDMoIP TDM over IP with standard packet structure Always select this type for compatibility with other vendors UDP IP equipment a TDMoIP TDM over IP with RAD proprietary packet structure This proprietary structure which increases the connection bandwidth utilization efficiency by reducing the number of overhead bytes carried in each packet can be used only when the equipment at the other end of the link is another VC E1 16 or a Vmux Voice Trunking Gateway with compatible software version The default for UDP IP networks is TDMoIP The options available for MPLS ETH networks are as follows a AAL2oMPLS AAL2 over MPLS
31. loopbacks on each voice port and local tone injection in selectable voice port timeslots The VC E1 16 collects transmission performance and status data for its various ports and for the connections bundles terminated at the module ports The collected data enables the system administrator to monitor the transmission performance and thus the quality of service provided to users for statistical purposes In addition when problems are reported by users served by VC E1 16 the collected data can also be used for diagnostic purposes because it can help identify the source of the problem 1 5 Technical Specifications General Function Voice compression module e VC E1 12 12 E1 trunks User Side Voice Ports e 16 respectively 12 external E1 ports or e 16 respectively 12 internal El ports connected to SDH ports Network Side Data Ports e 2 external El ports or e 2 internal El ports and 2 backup ports all connected to SDH ports Packet Switched Network e UDP over IP ypes e MPLS over ETH VC E1 16 VC E1 12 GM 2000 Ver 3 2 Technical Specifications 1 27 Chapter 1 Introduction User Side Voice Ports Voice Port Port Type Characteristics Compliance Framing Signaling Jitter Performance External Line Interface Voice Port Interface Characteristics jne Code Transmit Level Receive Level Connector per module Internal Interfacing Voice Port Interface Compliance Characteristics Network Side Data Ports Data
32. modems and fax over TDM links E1 and STM 1 and Gigabit Ethernet packet switched networks using IP and or MPLS transport Advanced systems design confers the flexibility needed to meet the requirements of practically every voice transport application The modules are fully compatible with RAD Vmux family of Voice Trunking Gateways and can be managed by the RADview SC Vmux Service Center for Vmux Applications version 4 5 or higher the same service center used to manage the Vmux product family The voice compression modules are available in two models which differ only in the number of voice ports e VC E1 16 module with 16 El voice ports e VC E1 12 module with 12 El voice ports Unless specifically stated otherwise the generic term VC E1 16 is used when the information is applicable to both module models Information applicable to a specific model is explicitly indicated Main Features VC E1 16 and VC E1 12 are complete voice compression subsystems with a compression capacity of 16 El respectively 12 El voice trunks The modules enable Gmux 2000 systems to deliver voice traffic including inband signaling DTMF MFR2 and MFC voiceband modems and Group III fax up to 14 4 kbps over the following types of links e TDM links E1 PDH links located on the VC E1 16 module itself or STM 1 SDH ports located on STM1 modules VC E1 16 VC E1 12 GM 2000 Ver 3 2 Overview 1 1 Chapter 1 Introduction Installation and Operati
33. ports to detect 4 2 Performance Monitoring VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics anomalous conditions for example many unavailable seconds UAS that may impair service When everything operates normally the transmission performance of El links meeting the internationally accepted standards is very good resulting in small numbers of coding errors CVs and LCVs and few errored seconds ES Small numbers of randomly distributed errors have little effect on voice quality but error bursts may seriously degrade the quality of compressed voice and their sources must be found and corrected in order to restore satisfactory performance Usually error bursts are reflected in the number of severely errored seconds SES gt To display physical layer statistics data 1 To display statistics data select the Statistics monitoring task 2 Select the Physical Layer statistics option 3 Select the desired VC E1 16 module by specifying its I O slot number 4 Select the desired type of ports You can select only a type of ports available on the module installed in the selected 1 0 slot The port types depend on the VC E1 16 operating mode as listed in Zable 4 1 Table 4 1 VC E1 16 Port Types versus Operating Mode Card Operating Mode User Ports Type Network Side Ports Type El voice ports VC16E1_UE_NE 1 to 12 for VC E1 12 1 to El data ports 1 or 2 16 for VC E1
34. ring 9 El channel 5 transmit output tip 41 El channel 5 transmit output ring 10 El channel 5 receive input tip 42 El channel 5 receive input ring 11 El channel 6 transmit output tip 43 El channel 6 transmit output ring 12 El channel 6 receive input tip 44 El channel 6 receive input ring 13 El channel 7 transmit output tip 45 El channel 7 transmit output ring 14 El channel 7 receive input tip 46 El channel 7 receive input ring 15 El channel 8 transmit output tip 47 El channel 8 transmit output ring 16 El channel 8 receive input tip 48 El channel 8 receive input ring 17 El channel 9 transmit output tip 49 El channel 9 transmit output ring 18 El channel 9 receive input tip 50 El channel 9 receive input ring 19 El channel 10 transmit output tip 51 El channel 10 transmit output ring 20 El channel 10 receive input tip 52 El channel 10 receive input ring 21 El channel 11 transmit output tip 53 El channel 11 transmit output ring 22 El channel 11 receive input tip 54 El channel 11 receive input ring 23 El channel 12 transmit output tip 55 El channel 12 transmit output ring 24 El channel 12 receive input tip 56 El channel 12 receive input ring 25 El channel 13 transmit output tip 57 El channel 13 transmit output ring 26 El channel 13 receive input tip 58 El channel 13 receive input ring 27 El channel 14 transmit output tip 59 El channel 14 transm
35. selected 1 0 slot are automatically displayed in a list select the number corresponding to the desired operating mode and confirm the selection Note The maximum number of VC E1 16 modules that can be installed in Gmux 2000 is 7 This maximum number can be installed only when no STM1 module is installed in the chassis this is always possible when using the UE NE operating mode However except for the UE NE operating mode all the other modes can use ports located on STMI modules STMI modules occupy slots 0 7 and or 1 0 9 Therefore the maximum number of VC E1 16 modules per chassis is 6 when one STMI module js installed and 5 when two STMI modules are installed 3 Repeat the procedure for each additional VC E1 16 module 3 4 Configuring VC E1 16 Global Parameters VC E1 16 global parameters configure processing characteristics that are used in common by all the module voice ports These characteristics control the interpretation of the signaling information and the management of the bandwidth required on the link to the network Note Rp f nn f you are not familiar with E1 frame structure and in particular the utilization of timeslots 0 and 16 which carry framing and signaling information it Is recommended to review Appendix C of the Gmux 2000 Installation and Operation Manual Configuring Signaling Profiles Voice calls require the transmission of control signaling information such as call setup and tear do
36. the external El network ports of the module Network External NE see Figure 1 11 Timeslot Cross External To STM1 Internal Voice Col Connect Data Ports Modules Voice Ports mpression Figure 1 11 Signal Flow in US_NE Mode UE_NS Mode In this mode VC E1 16 accepts user traffic from the 16 or 12 external E1 ports User External UE and sends the compressed traffic in VC 12s through SDH ports Network SDH NS located on the STM1 module see Figure 1 12 i Timeslot EM Voice SDH 1 16 E1 External lt E i E ue To STM1 A i Cross Voice Ports mpression Connect ata Ports Mapper Modules Figure 1 12 Signal Flow in UE NS Mode VC E1 16 VC E1 12 GM 2000 Ver 3 2 Functional Description 1 17 Chapter 1 Introduction Installation and Operation Manual US_NS Mode In this mode VC E1 16 accepts user traffic from the SDH ports User SDH US located on the STM1 module and sends the compressed traffic through the same or other SDH ports Network SDH NS see Figure 1 13 Timeslot Internal Internal Voice Voice Ports D gt Compression Cross Data Ports Connect SDH Mapper To STM1 Modules Figure 1 13 Signal Flow in US NS Mode Processing of Audio Signals This section explains the processing of audio signals by the VC E1 16 modules The processing depends on the signal type The following functions are available e Voice compression e Processing of inband signaling DTMF etc e Processin
37. the laser beam e The use of optical devices with the equipment will increase eye hazard e Use of controls adjustments or performing procedures other than those specified herein may result in hazardous radiation exposure ATTENTION The laser beam may be invisible In some cases the users may insert their own SFP laser transceivers into the product Users are alerted that RAD cannot be held responsible for any damage that may result if non compliant transceivers are used In particular users are warned to use only agency approved products that comply with the local laser safety regulations for Class 1 laser products Always observe standard safety precautions during installation operation and maintenance of this product Only qualified and authorized service personnel should carry out adjustment maintenance or repairs to this product No installation adjustment maintenance or repairs should be performed by either the operator or the user Handling Energized Products General Safety Practices Do not touch or tamper with the power supply when the power cord is connected Line voltages may be present inside certain products even when the power switch if installed is in the OFF position or a fuse is blown For DC powered products although the voltages levels are usually not hazardous energy hazards may still exist Before working on equipment connected to power lines or telecommunication lines remove jewelry or any other metalli
38. the user VC E1 16 supports automatic fallback capability that is it will automatically switch to the next lower data rate supported by both communicating faxes The whole fax transmission process is therefore handled as a data transmission with the VC E1 16 DSP providing the fax signal modulation demodulation functions and the detection and generation of the fax connection set up tones in digital format to enable the handshaking necessary to implement the standard fax communication protocol Fax relaying works as follows e To set up a fax connection the DSP processing the local timeslot channel emulates the remote fax machine toward the local machine and the remote DSP emulates the local fax toward the remote machine e After the fax connection is established the fax data stream is transmitted as a packetized data stream through the link This means that the link must have enough free bandwidth to enable sustained transmission of a data stream at the fax data rate and the additional connection supervision signals This process enables any standard Group Ill facsimile machine to transmit over the link The only limitation is that the round trip transmission delay through the link cannot exceed the time out intervals specified by the fax communication protocol about 700 msec otherwise the handshaking needed to establish a fax connection will fail When necessary the minimum time a 1100 Hz or 2100 Hz must be present for positiv
39. to El transmission equipment The number of external El data ports is 2 Each data port has an ITU T Rec G 703 interface with independently selectable characteristics 120 Q balanced line interface 75 Q unbalanced interface For each data port only one of these two interfaces is active at any time The maximum allowed line attenuation is 36 dB for the LTU mode and 12 dB for the DSU mode e Internal interfaces logical ports that connect through the VC E1 16 SDH mapper to the Gmux 2000 telecom buses The number of internal data ports is either 2 without backup or 4 backup enabled These logical ports are mapped to VC 12s on the desired SDH ports and the path parameters can be configured as for any other VC 12 ports At any time only one set of data port interfaces either the internal or the external ports is active that is connected to the E1 data framers in accordance with the selected operating mode see VC 1 16 Operating Modes section on page 1 16 To improve service availability the network interfacing subsystem can be configured to provide backup for the connection to the network In this case the data ports operate in pairs This means that when using the external E1 data ports the maximum bandwidth of the network connection is the bandwidth available on a single port 1984 kbps for framed modes 2048 kbps for the unframed mode When connecting through the internal SDH ports the maximum bandwidth is the ba
40. to support both ISDN PRI and SS7 CCS signaling modes This was necessary because when passing SS7 traffic you must set a FISU suppression rate which affects the entire VC E1 16 This makes it impossible to run ISDN PRI as well as SS7 on the same VC E1 16 even on different E1 ports as the PRI frames get corrupted due to the FISU suppression The proper procedure is 1 Select SS7 for SS7 traffic 2 Select HDLC for non SS7 traffic e g ISDN PRI VC E1 16 VC E1 12 GM 2000 Ver 3 2 Frequently Asked Questions 4 27 Chapter 4 Troubleshooting and Diagnostics Installation and Operation Manual POP How many voice bundles can be configured for one VC E1 16 unit The VC E1 16 can support up to 32 active bundles Does the VC E1 16 support ITU T Rec Q 50 VC E1 16 supports both Annex A and Annex B of the ITU T Rec Q 50 protocol but only for the 3 1 kHz audio or speech connection type Annex A also includes signals which are transported over three spare bits 5 7 and 8 of timeslot 16 multiframes These are used to transmit the transmission resource information and maintenance signals when it is possible to carry timeslot 16 frame O between the DCME Digital Circuit Multiplication Equipment in this case the VC E1 16 and the International Switching Center Note that any equipment placed between the DCME and the International Switching Center such as timeslot interchange equipment may prevent this transmission Can VC E1 16 transmit
41. to suppress a certain fraction of these messages up to 90 When the suppression ratio is 0 the channel performs the same as a HDLC channel When FISU and LSSU suppression is possible for optimal performance it is recommended to initially select a suppression rate of 30 latter the suppression rate can be adjusted as needed Note FISU and LSSU suppression occurs only on timeslots configured for carrying the SS7 protocol for example SS7 1 It does not affect timeslots configured as regular HDLC channels for transparent signaling transfer for example HDLC 1 gt To configure the keep alive suppression rate 1 On the Config gt Physical Layer gt I O screen of the VC E1 16 module select SS7 Keep Alive Suppression Rate to display the configuration screen 2 Select the appropriate fraction of LSSUs and FISUs to be suppressed The available selections start with 0 no suppression also suitable for other protocols up to 90 in 10 increments 3 5 Configuring El Voice Port Parameters Table 3 2 lists all the physical layer configuration parameters for the El voice user side ports gt To configure the El voice port parameters 1 On the Config gt Physical Layer gt I O screen of the VC E1 16 module select El Port Voice 2 Select Channel ID and then enter the number of the desired port 1 to 16 for VC E1 16 or 1 to 12 for VC E1 12 Note When bundles using ITU T Rec G 711 codecs are terminated on the module
42. to use this setting if the bundle connects to remote equipment for example a Vmux Voice Trunking Gateway with T1 interfaces Default A Law VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring Connections for Voice Ports 3 31 Chapter 3 Configuration Installation and Operation Manual VAD Controls the Voice Activity Detection VAD mode for this bundle and selects the noise threshold level The selection is made on a separate screen with the following options VAD Method Generic VAD Policy RAD proprietary VAD Controls the use of Voice Activity Detection method enables selection of noise VAD for this bundle threshold level Internal VAD Policy VAD method compatible with the applicable standards Default Generic VAD Policy Noise Level for VAD OFF VAD disabled This option is not Selects the noise threshold for the VAD available when selecting G 711 A Law mechanism or G 711 u Law for the Coder Rate This parameter is displayed only when VAD parameter Method is Generic VAD Policy HIGH VAD enabled and the higher noise threshold is selected This selection is recommended for applications with higher background noise level LOW VAD enabled and the lower noise threshold is selected This is the recommended setting Default LOW CNG Mode Controls the use of the comfort noise generation DISABLE Comfort noise generation is CNG for for this bundle disabled The insertion of comfort noise is made at the EN
43. use with unbalanced interface DSU DSU mode suitable for short haul applications The maximum supported line attenuation relative to the nominal transmit level O dB is 12 dB The lower attenuation may actually improve the performance when operating over relatively short line sections especially when operating over multi pair cables In such cables significant interference is generated by the signals carried by other pairs when using the LTU mode the interference may be interpreted as a weak signal and therefore may mask the loss of the desired signal and thus prevent the generation of an alarm Default LTU LIU Impedance Selects the external port interface This parameter is not relevant for internal El ports that is ports connected to SDH ports BALANCE Balanced 120 Q interface for use over twisted pairs UNBALANCE unbalanced 75 Q interface for use over coaxial cables Default BALANCE Profile Selects the signaling profile to be used by the corresponding port The profile specifies the translation of the signaling information received from the network before being forwarded to the local user s equipment e g a PBX or switch The available range is 1 through 5 Default 1 Assign Entire Port to Bundle When a single bundle will carry all the timeslots of this port you can directly select this bundle instead of using Config gt Connection gt TS Assignment Make sure to config
44. via the Gmux 2000 telecom buses the E1 framer returns the received signal to the SDH mapper via the transmit path of the same port Figure 4 2 shows the signal paths when a remote loopback is activated on a voice port connected to the SDH network This test checks the transmission path to the local voice port including the SDH transmission plant the STM1 module the internal Gmux 2000 paths connecting the user s equipment to the local VC E1 16 voice port and the E1 framer of the VC E1 16 voice port In both configurations the test signal is provided by the equipment connected to the local voice port that must receive its own transmission Note that as long as 4 16 VC E1 16 Diagnostic Functions VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics the test is activated that equipment cannot use loopback timing it must use either internal timing or lock its timing to an external clock signal While the loopback is activated the signal received from the remote voice port is ignored The signal received from the local user s equipment remains connected to the DSP which continues sending the received payload for transmission through the network E1 or SDH to the equipment at the remote end of the link To ensure that the user s equipment connected to the tested port is capable of providing a good signal the remote voice port loopback should be activated on the local VC E1 1
45. when a signal label Signal Label indications by the port in case the mismatch is detected received signal label is different from DISABLE AIS and RDI are not sent when signal the expected signal label label mismatch is detected Nevertheless AIS and RDI are still sent in case of LOP loss of pointer or unequipped signal label condition Default DISABLE 3 16 Configuring Parameters Related to SDH Transport VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Parameter Function AIS amp RDI on Controls the sending of AIS and RDI Path Trace indications by the port in case the received path trace label carried in STM 1 overhead byte J2 is different from the expected path trace label Chapter 3 Configuration Values ENABLE AIS and RDI are sent in case a signal label mismatch is detected DISABLE AIS and RDI are not sent when a signal label mismatch is detected Nevertheless AIS and RDI are still sent in case a LOP loss of pointer or unequipped signal label condition is detected Default DISABLE Controls the sending of the path trace label by the selected port J2 Tx Path Trace ENABLE The path trace label is sent DISABLE No path trace label is sent Default DISABLE J2 Rx Path Trace Controls the checking of the received path trace label by the selected port ENABLE Path trace label is checked DISABLE Path trace label is not checked Default DISABLE J2 Path
46. 3 2 Functional Description 1 15 Chapter 1 Introduction Installation and Operation Manual Note Timing and Clock Generation Subsystem The timing of each E1 port is derived as follows e Transmit path the transmit timing of each external port can be either Derived from the Gmux 2000 nodal timing In this case the equipment connected to the corresponding port must use loopback timing Locked to the clock signal recovered from the receive line signal of the port This locks the port transmit timing to the transmit timing of the equipment connected to the port receive clock loopback timing All the El ports whether data or voice must use the same clock source e Receive path the receive path of each El port always receives the clock signal from the external E1 port The receive dock frequency must always be equal to the transmit dock frequency Management Subsystem The module management subsystem controls the operation of the various circuits located on the VC E1 16 module in accordance with the configuration parameters sent by the CONTROL module upon power up or after resetting The VC E1 16 configuration parameters are derived from the Gmux 2000 configuration stored on the CONTROL module The software necessary for the module operation is stored in a flash memory The software can also be updated by downloading from the CONTROL module VC E1 16 Operating Modes Note The following description uses the card design
47. 5 shows the CBL TELCO RJ45 16E1 cable structure 64 Pin TELCO Connector A Cable Shield Lug RJ 45 Plugs Figure 2 5 CBL TELCO RJ45 16E1 Cable 2 8 Connecting Cables VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 2 Installation and Operation The cable which is 2 meter long has one 64 pin TELCO male connector that connects to the 1 16 El or 1 12 El connector of a VC E1 16 respectively VC E1 12 module The other cable side ends into 16 RJ 45 plugs designated CH 1 to CH 16 At the 64 pin connector side the cable shield is terminated in a cable lug for connection to the dedicated cable shield screw on the module panel Table 2 5 provides the wiring of the CBL TELCO RJ45 16E1 cable Table 2 5 CBL TELCO R 45 16E1 Cable Wiring RJ 45 64 Pin RJ 45 RJ 45 64 Pin RJ 45 Channel Connector Connector Channel Connector Connector Connector Connector Pin Function Pins Pin Function Pins 33 TX Ring 1 49 TX Ring 1 1 TX Tip 2 17 TX Tip 2 1 de 34 RXRing 4 we 50 RX Ring 4 2 RX Tip 5 18 RX Tip 5 35 TX Ring 1 51 TX Ring 1 2 cH 2 Ale 10 eng net PEN 36 RX Ring 4 52 RX Ring 4 4 RX Tip 5 20 RX Tip 5 37 TX Ring 1 53 TX Ring 1 5 TX Tip 2 21 TX Tip 2 3 oa 38 RXRing 4 ai ee 54 RXRing 4 6 RX Tip 5 22 RX Tip 5 39 TX R
48. 6 port only after checking that the end user s equipment operates normally while its own local loopback is activated _ Voice Port Voice Framer Compression and Timeslot Cross Connect BUSCS nt ss se Se er ee See To SDH Network gt D Voice Port H Voice Framer Compression Mapper and STM1 Timeslot Module Cross Connect Figure 4 2 Remote Loopback on Voice Port Connected to SDH Network Local Loopback on Voice Port The local voice port loopback returns the E1 signal restored from the compressed voice stream received from the remote end through the E1 or SDH network connection toward the equipment at the remote end of the link The loopback is activated at the digital side of the El framer of the tested port The El framer returns the signal restored by the receive path of the DSP serving the port towards the DSP via the transmit path of the same port Note A When the tested port receives multiple bundles each bundle s signal is independently looped back VC E1 16 VC E1 12 GM 2000 Ver 3 2 VC E1 16 Diagnostic Functions 4 17 Chapter 4 Troubleshooting and Diagnostics Installation and Operation Manual e Figure 4 3 shows the signal paths when a local loopback is activated on an external voice port This loopback fully checks the operation of the local VC E1 16 voice port except for the E1 line interface LIU it also checks the internal VC E1 16 signal paths that end at the tested V
49. ABLE Comfort noise generation is receiving end and thus it is effective only when enabled VAD is enabled Default ENABLE Advanced Voice Provides access to additional parameters Parameters effecting audio signal processing The selection is made on a separate screen with the following options Cdis CONNECTING Detection Time Select the time needed to detect the presence The available selections are multiples of of 1100 Hz and 2100 Hz tones before switching 10 msec in the range of 10 to 100 msec to the fax or modem mode Default 40 3 32 Configuring Connections for Voice Ports VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration 3 9 Configuring VC E1 16 Port Timeslot Assignment With VC E1 16 modules timeslot assignment is needed for two purposes To specify which voice port timeslots are served by the bundles configured for VC E1 16 modules When necessary to select timeslots for transparent transfer and attach them to the desired bundle To specify the timeslots that is the bandwidth assigned to each subchannel and thus to the bundles connected to that subchannel on each VC E1 16 data port The number of timeslots determines the transmission bandwidth assigned to each bundle For bandwidth utilization considerations refer to Chapter 1 Configuring Timeslot Assignment for Voice Ports Note The voice port timeslots to be served by a compressed voice bundle can be select
50. Bit value is always 0 1 Bit value is always 1 Select the idle code select bit values in the IDLE SIGNAL row Select the out of service code select bit values in the OOS SIGNAL row VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring VC E1 16 VC E1 12 Modules 3 Quick Start Guide Bandwidth Management gt To set the bandwidth control thresholds I Installation and Operation Manual On the Config gt Physical Layer gt I O screen of the module select Bandwidth Control Select Q 50 Stop New Calls Threshold and then enter the global bandwidth utilization threshold at which a voice port starts rejecting new calls the range is 25 to 98 Select Discard Voice Packets Threshold and then enter the global bandwidth utilization threshold at which a voice port starts discarding packets on active calls the range is 25 to 99 Select Block New Modem VBD Calls Threshold and then enter the global bandwidth utilization threshold at which a VC E1 16 VC E1 12 voice port starts blocking the set up of new voiceband modem calls the range is 20 to 98 Select Block New Modem Relay Calls Threshold and then enter the global bandwidth utilization threshold at which a VC E1 16 VC E1 12 voice port starts blocking the set up of new modem relay calls the range is 20 to 98 gt To configure the keep alive suppression rate l On the Config gt Physical Layer gt I O screen of the module select SS7 Keep Alive Suppression Ra
51. C 12 ports LCV Displays the number of line coding violations LCV in the selected interval A line coding violation is declared when a line signal decoding error occurs at the receive side such errors commonly occur when the receive signal level is too low usually as a result of excessive line attenuation between the transmit and receive ports This parameter is available only for external E1 ports 4 G Performance Monitoring VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics Displaying VC E1 16 Physical Layer HDLC Transport Status Data HDLC transport status monitoring data are available for both voice user side and data network side ports e For voice ports the HDLC protocol is used to transport CCS data As explained in Chapter 3 for each voice port it is possible to assign up to two timeslots for CCS transport One timeslot referred to as HDLC Data Flow A can be assigned to transparent transport of HDLC frames This timeslot can also transport other protocols including Signaling Scheme 7 SS7 A second timeslot referred to as SS7 Data Flow A can be assigned to optimized transport of Signaling Scheme 7 protocol data units PDUs This timeslot should not be used for other protocols because it is not transparent e For data ports the HDLC protocol is used for end to end handshaking and management traffic One HDLC channel is used on each data po
52. C E1 16 port including the transmission path through the network connecting the remote equipment to the local Gmux 2000 and the connections of the remote equipment to the far end Gmux 2000 e When the local loopback is activated on a voice port connected to the SDH network that is connected to an SDH port via the Gmux 2000 telecom buses the tested signal paths do not change As shown in Figure 4 4 the only difference is in the paths not included with the loopback This test checks the transmission path to the local voice port including the SDH transmission plant the STM1 module the internal Gmux 2000 paths connecting the user s equipment to the local VC E1 16 voice port and the E1 framer of the VC E1 16 voice port In both configurations the test signal is provided by the equipment connected to the remote end that must receive its own transmission Note that as long as the test is activated that equipment cannot use loopback timing it must use either internal timing or lock its timing to an external clock signal While the local loopback is activated the transmit signal arriving from the local user s equipment is ignored but the local voice port continues sending the received signal to the local equipment To ensure that the remote equipment is capable of providing a good signal the local loopback should be activated on the local VC E1 16 voice port only after checking that the remote end user s equipment connected to the test
53. CRC 4 This framing mode is required for applications that require CAS The voice ports have two sets of interfaces e External physical interfaces terminated in the 1 16E1 or 1 12E1 connector for directly connecting to the user s PBX voice switch Each voice port has an ITU T Rec G 703 interface with independently selectable characteristics 120 Q balanced line interface 75 Q unbalanced interface For each port only one of these two interfaces is active at any time The maximum allowed line attenuation is 36 dB for the LTU mode and 12 dB for the DSU mode e Internal interfaces logical ports that connect through the VC E1 16 SDH mapper to the Gmux 2000 telecom buses These logical ports are mapped to VC 12s on the desired SDH ports and the path parameters can be configured as for any other VC 12 ports At any time only one set of voice port interfaces either the external or the internal set is active that is connected to the E1 voice framers in accordance with the selected operating mode see VC E1 16 Operating Modes section on page 1 16 Network Interfacing Subsystem The network interfacing subsystem consists of data ports each comprising an El framer and a port interface e Inthe transmit path each data port collects the compressed audio signals from the main processor and builds the data stream for transmission to the network e Inthe receive path each data port synchronizes to the incoming data stream
54. E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring Connections for Voice Ports 3 17 Chapter 3 Configuration Installation and Operation Manual gt To delete all the bundles currently configured on this module 1 Open Config gt Physical Layer 1 0 for the configured module 2 Select the Delete all slot s bundles option e Utility for disconnecting all the bundles currently configured to serve the voice ports of this VC E1 16 module This is necessary before modifying the parameters of the bundles served by this module Disconnecting the bundles also stops the traffic served by the module without removing the bundle configuration from the database gt To disconnect all the bundles currently configured on this module 1 Open Config gt Physical Layer gt O for the configured module 2 Select the Disconnect all slot s bundles option Connection Parameters Configuration Sequence The tasks needed to configure connections and their parameters are started from the Config gt Connection menu The parameters are specified by configuring a bundle The total number of bundles that can be defined for each VC E1 16 is 32 and the total number of bundles that may be defined on a whole Gmux 2000 is 2000 You can also choose whether to activate the bundle configuration data or just save it in the database without the bundle being connected to any module The configuration of a bundle for VC E1 16 includes the following main activities 1 Selec
55. E1 16 and with VC E1 16 and STM1 Modules STM1 Modules Backup Figure 1 2 High Capacity Toll Bypass over SDH Network Toll Bypass over Packet Switched Networks Figure 1 3 shows a Gmux 2000 equipped with VC E1 16 modules used to provide a high capacity toll bypass link over a packet switched network 1 6 Typical Applications VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 1 Introduction This application uses the packet ports of the VC E1 16 modules to direct the compressed voice traffic or any part of this traffic as configured by the user to the desired GbE port s of GbE modules installed in the Gmux 2000 The PSN connection characteristics are configured by defining bundles VC E1 16 can operate over IP and or MPLS packet switched networks in accordance with user s configuration for each bundle PSN connections can be used in parallel with any type of TDM network connections PRE Up to 112 Packet E1 GbE Switched x GDE K s Network j Gmux 2000 A Gmux 2000 PBX with VC E1 16 and d with VC E1 16 and PBX GbE Modules GbE Modules Figure 1 3 High Capacity Toll Bypass over Packet Switched Network Connecting Multiple Remote Call Centers Figure 1 4 shows a Gmux 2000 equipped with VC E1 16 modules that provides access links to from the corporate PBX or from a PSTN switch to several remote call centers each using one Vmux 2100 Voice Trunking Gateway Up to 7 VC E1
56. FRAMED G 704 CRC UNFRAMED Restoration Time FAST LIU Impedance for BALANCE CCITT external ports only UNBALANCE TR 62411 Transmit CLK Source SYSTEMA LBT Specific Configuration Parameters for UNFRAMED Mode 1 Select Sub Channel Number 1 to 10 2 Select TS Type Connected normal operation traffic can flow NC disables traffic flow through the subchannel and thus through the whole data port Configuring Backup for the Network Side Connection gt To configure the backup parameters 1 On the El Port Data screen select ENABLE for Backup Status The currently selected port becomes Primary port 2 Select the Backup Port 3 When necessary repeat the procedure for the second pair of ports applicable only for SDH ports VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring VC E1 16 VC E1 12 Modules 5 Quick Start Guide Installation and Operation Manual Configuring Parameters Related to SDH Transport Configuring VC 12 Path Parameters Use Config gt Physical Layer 1 0 gt VC12 Channel Parameter Values Parameter Values Channel VC12 VC16E1_US_NE 1 to 16 for VC E1 16 1 to 12 for VC E1 12 VC16E1_UE_NS 1 to 4 VC16E1_US_NS Voice 1 to 16 for VC E1 16 1 to 12 for VC E1 12 Data 17 to 20 J2 Tx Path Trace DISABLE ENABLE Connect State CONNECTED J2 Rx Path Trace DISABLE NC ENABLE AIS amp RDI on DISABLE J2 Path Trace String of 15 alphanumeric Signal Label ENABLE characters pad with spaces if n
57. INSTALLATION AND OPERATION MANUAL VC E1 16 VC E1 12 VC E1 16 VC E1 12 Voice Compression Modules Gmux 2000 Ver 3 2 Installation and Operation Manual Notice This manual contains information that is proprietary to RAD Data Communications Ltd RAD No part of this publication may be reproduced in any form whatsoever without prior written approval by RAD Data Communications Right title and interest all information copyrights patents know how trade secrets and other intellectual property or other proprietary rights relating to this manual and to the VC E1 16 VC E1 12 and any software components contained therein are proprietary products of RAD protected under international copyright law and shall be and remain solely with RAD The VC E1 16 VC E1 12 product name is owned by RAD No right license or interest to such trademark is granted hereunder and you agree that no such right license or interest shall be asserted by you with respect to such trademark The RAD name logo logotype and the terms EtherAccess TDMoIP and TDMoIP Driven and the product names Optimux and IPmux are registered trademarks of RAD Data Communications Ltd All other trademarks are the property of their respective holders You shall not copy reverse compile or reverse assemble all or any portion of the Manual or the VC E1 16 VC E1 12 You are prohibited from and shall not directly or indirectly develop market distribute license or sell
58. ITU T Rec G 711 with A law companding e ITU T Rec G 711 with p law companding e Voice activity detection with silence suppression e Configurable comfort noise generation User selectable A law or u law ITU T Rec G 168 maximum delay 32 msec Adjustable relative to nominal output level 6 to 6 dB in 1 dB steps Adjustable relative to nominal input level 12 dB 6 to 6 dB in 1 dB steps 12 dB For UDP IP networks e Standard TDMoIP e RAD proprietary TDMoIP TDMoIP For MPLS networks e Standard AAL2 over MPLS per ITU T Y 1414 AAL20MPLS e RAD proprietary AAL2 over MPLS AAL20MPLS VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Encapsulation Parameters Trunk Signaling Support CCS Signaling Support Inband Signaling Fax Support Modem Support Voiceband Fax Modem Coders Voice Bandwidth Utilization Compression per Controls Bundle Cont VC E1 16 VC E1 12 GM 2000 Ver 3 2 Chapter 1 Introduction Configurable packet size 100 to 1461 bytes Configurable maximum inter packet interval 10 to 90 msec CAS timeslot 16 user configurable signaling translation up to 5 signaling profiles idle code and OOS code CCS with user selectable timeslots supports ISDN QSIG SS7 protocols Transparent transfer using HDLC over AAL2 SSTED per ITU T Rec 1 366 1 Selectable keep alive message suppression ratio for SS7 Relaying detection and generation of DTMF MFR2
59. Ill fax signal by the receiving side the resulting data is transmitted through the link as a digital signal and reconverted to a clean fax signal at the other side Each end is also capable of interpreting the Group Ill fax handshaking protocol to enable setting up fax calls in accordance with the fax standards including support for rate fallback As a result all the other standard rates lower than the selected maximum rate are also supported 4 8 kbps Maximum fax rate of 4 8 kbps 9 6 kbps Maximum fax rate of 9 6 kbps 14 4 kbps Maximum fax rate of 14 4 kbps VBD The fax signal is handled as an analog signal This mode transparently transfers the fax modem signal waveform and therefore supports many standards Note however that the bandwidth needed to transfer a voiceband signal requires a relatively large bandwidth on the order of one timeslot on the exit port Default 14 4 kbps Max VBD Modem Calls Determines the bundle bandwidth utilization threshold at which the set up of new voiceband modem calls is blocked This parameter is displayed only when Modem is ENABLE The available range is 1 to 62 of the bundle bandwidth Default 62 VC E1 16 VC E1 12 GM 2000 Ver 3 2 Max Relay Modem Calls Determines the bundle bandwidth utilization threshold at which the set up of new modem calls using the relay mode is blocked This parameter is displayed only when Modem is ENABLE Configuring Conne
60. LE MFC tone spoofing is enabled This shortens the call setup delay when using R2 MFC signaling by forcing an MF Forward Tone acknowledge after the interval selected by means of the Tone Ack Interval parameter DISABLE MFC tone spoofing is disabled Default DISABLE The available range is a multiple N of Determines the tone acknowledge delay This parameter is displayed only when MFC Spoofing is ENABLE 20 msec where N is 3 to 20 equivalent to 60 to 400 msec Default 3 60 msec Custom Tone Detection Enable disable detection and relaying of tones used by specific types of equipment for this bundle The selection is made on a separate screen with the following options Tone Detection Enable disable detection and relaying of tones used by specific types of equipment for this bundle 3 30 Configuring Connections for Voice Ports ENABLE Custom tone detection and relaying is enabled DISABLE Custom tone detection and relaying is disabled Default DISABLE VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration Custom Tone Tone Frequency 2000 Hz Detection and relaying of Detection Selects the detected tones 2000 Hz tones leont This parameter is displayed only when Tone 1780 Hz Detection and relaying of Detection is ENABLE 1780 Hz tones 2000 Hz 1780 Hz Detection and relaying of both 2000 Hz and 1780 Hz tones Default 2000 Hz
61. P configuration is correct the problem may be in the network you may use the ping function to check a Echo Wait the IP link is up but the bundle cannot carry traffic because Layer 4 UDP is down In this case first check the source and destination CBID parameters The bundle exit port for example the identification of the TDM link A B C D or the GbE module and port Bundle counters section which displays the bundle performance monitoring parameters You can reset the bundle counters by a C clear command Table 4 7 presents the bundle performance monitoring parameters Note Rx identifies the receive direction from the network to the VC E1 16 Tx identifies the transmit direction from the local VC E1 16 to the network Unless a specific time interval Is listed the displayed values represent the total accumulated since the bundle has last been connected or since the last counters clear command whichever occurred last VC E1 16 VC E1 12 GM 2000 Ver 3 2 Performance Monitoring 4 13 Chapter 4 Troubleshooting and Diagnostics Parameter Rx Total Frames Installation and Operation Manual Table 4 7 Bundle Performance Monitoring Parameters Description Total number of packets received Tx Total Frames Total number of data packets transmitted Rx 60 sec Frames Number of packets received during the last 60 seconds Tx 60 sec Frames Number of packets transmitted during the last 60 se
62. Port Port Type Characteristics Compliance Framing 1 28 Technical Specifications Installation and Operation Manual El 2 048 Mbps ITU T Rec G 703 G 704 G 706 G 732 G 823 e Basic G 704 framing with or without CRC 4 e G 704 multiframe with or without CRC 4 e CAS for G 704 multiframe e CCS transparent transport for basic G 704 framing ITU T Rec G 823 e 120 Q balanced e 75 Q unbalanced HDB3 e Balanced 3V 10 e Unbalanced 2 37V 10 e DSU mode 0 to 12 dB e LTU mode 0 to 36 dB 64 pin TELCO female connector VC 12 ITU T Rec G 783 and G 707 El 2 048 Mbps ITU T Rec G 703 G 704 G 706 G 732 G 823 e Basic G 704 framing with or without CRC 4 e Unframed VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Bandwidth Utilization Jitter Performance External Data Port Line nterface Characteristics Line Code Transmit Level Receive Level Connector Internal Data Port nterfacing Interface Characteristics Compliance Backup Number of Ports Characteristics Backup Switching Mode Packet Bus Interfaces Voice Transmission Parameters Internal Ports Maximum Number Bundle Size VC E1 16 VC E1 12 GM 2000 Ver 3 2 Chapter 1 Introduction e Basic G 704 framing channelized mode with up to 10 independently configurable subchannels per port 1 to 31 timeslots per subchannel e Unframed one subchannel with a capacity of 32 timeslots ITU T
63. Rec G 823 e 120 Q balanced e 75 Q unbalanced requires adapter cable User selected for each port HDB3 e Balanced 3V 10 e Unbalanced 2 37V 10 e DSU mode O to 12 dB e LTU mode 0 to 36 dB RJ 45 per port VC 12 ITU T Rec G 783 and G 707 e External 1 primary 1 secondary e Internal 2 primary 2 secondary Revertive Two Fast Ethernet interfaces to Gmux 2000 internal packet buses Up to 32 active bundles per module each independently configurable 1 timeslot to full port 30 or 31 timeslots user configurable Technical Specifications 1 29 Chapter 1 Introduction Routing Parameters Connectivity Check Voice Compression Algorithms Compression per Bundle Uncompressed Voice Algorithms Silence Suppression Companding Law Echo Canceling Receive Signal Level Transmit Signal Level Voice Encapsulation Method Compression per Bundle Cont 1 30 Technical Specifications Installation and Operation Manual e Selectable source and destination CBID for UDP IP or MPLS label for MPLS ETH e Destination IP address e Next hop IP address e Configurable VLAN support e Selectable exit port and subchannel e Transmission rate 1 to 60 seconds between packets e Alarm threshold 2 to 5 cycles e MP MLQ per ITU T Rec G 723 1 at rates of 5 3 and 6 4 kbps e Conjugate structure algebraic code excited linear prediction CS ACELP per Annex A of ITU T Rec G 729A at a rate of 8 kbps e
64. T amp T time required for the port to return to TR 62411 after 10 seconds normal operation after local loss of EAST After 1 second RUE sla Default FAST This parameter is not relevant when the Line Type is UNFRAMED 3 12 Configuring El Data Port Parameters VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Parameter Transmit CLK Source Function Selects the reference source used by the transmit path of this port Make sure to select the same timing source for all the ports However if a VC E1 16 data port will serve as master clock source for the Gmux 2000 that port must use loopback LBT timing and the other ports should use SYSTEM A Chapter 3 Configuration Values SYSTEM A The port transmit timing is derived from the nodal timing provided by the Gmux 2000 timing subsystem A In this case make sure that the equipment connected to the voice port uses loopback timing LBT The port transmit timing is locked to the clock signal recovered from the receive line signal of the port This locks the port transmit timing to the transmit timing of the local El equipment Default SYSTEM A Interface Type See 7able 3 2 Sub Channel Configuration Displays the current configuration of the subchannels supported by the data port Displays a table with the following columns CHANNEL NUM Subchannel number in the range of 1 to 10 FUNCTION Displays DATA RELAY meaning that the
65. VBD Rate Determines the coding method and rate used to transmit voiceband modem signals Two basic types of coders which are both capable of transferring complex waveforms with little distortion are used PCM per ITU T Rec G 711 and ADPCM ITU T Rec G 726 ADPCM provides performance very close to PCM but requires significantly less bandwidth 40 to 50 depending on version 3 28 Configuring Connections for Voice Ports Installation and Operation Manual Values VOICEBAND DATA The modem signal is handled as an analog signal This mode transparently transfers the modem signal waveform and therefore supports many standards Note that the bandwidth needed to transfer a voiceband signal requires a relatively large bandwidth on the exit port the exact bandwidth depends on the selected VBD Rate coder however it is on the order of one timeslot RELAY The modem signal is demodulated by the receiving side the resulting data is transmitted through the link as a digital signal and reconverted to a clean modem signal at the other side This selection is relevant only for modem signals conforming to one of the standards recognized by the VC E1 16 V 22 V 22bis V 32 V 32bis and V 34 up to 21 6 kbps any unrecognized protocol is sent as a voiceband signal The required bandwidth in this mode is smaller than that required for voiceband signals Default VOICEBAND DATA G 711 64k 5 msec PCM coder complying
66. VLAN Valid as NO Note The same steps are needed for configuring a managed Vmux 2100 Voice Trunking Gateway Refer to the Vmux 2100 Installation and Operation Manual for detailed Instructions 3 11 Configuring N 1 Protection VC E1 16 and VC E1 12 modules using the US_NS mode support the N 1 protection mode one of the Gmux 2000 APS functions N 1 protection for VC E1 16 or VC E1 12 modules is configured as follows gt To configure N 1 protection for VC E1 16 or VC E1 12 modules 1 Open the Config gt System gt Redundancy gt I O screen and type X to add a new APS group Note Gmux 2000 supports a single N 1 protection group per chassis Therefore if another N 1 protection group is already configured first delete it 3 38 Configuring N 1 Protection VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration 2 Open the APS Configuration screen for the new APS group and select N 1 for the Config Mode You may also add a name for the group in the Name field 3 Select the desired Recovery Mode Non Revertive after a protection flip the protection module continues carrying the traffic even if the protected module replaced by it returns to normal operation Revertive after a protection flip the protection module returns to idle when the protected module replaced by it returns to normal operation and thus is again capable of protecting the other modules You can specify the Tim
67. WG or larger telecommunication line cords Attention Pour r duire les risques s incendie utiliser seulement des conducteurs de t l communications 26 AWG ou de section sup rieure Some ports are suitable for connection to intra building or non exposed wiring or cabling only In such cases a notice will be given in the installation instructions Do not attempt to tamper with any carrier provided equipment or connection hardware Electromagnetic Compatibility EMC The equipment is designed and approved to comply with the electromagnetic regulations of major regulatory bodies The following instructions may enhance the performance of the equipment and will provide better protection against excessive emission and better immunity against disturbances A good ground connection is essential When installing the equipment in a rack make sure to remove all traces of paint from the mounting points Use suitable lock washers and torque If an external grounding lug is provided connect it to the ground bus using braided wire as short as possible The equipment is designed to comply with EMC requirements when connecting it with unshielded twisted pair UTP cables However the use of shielded wires is always recommended especially for high rate data In some cases when unshielded wires are used ferrite cores should be installed on certain cables In such cases special instructions are provided in the manual Disconnect all wires which are n
68. a VC E1 16 data port Enter the number of the prescribed this parameter is used to select the data port subchannel through which the traffic generated by this bundle will be sent This parameter is not relevant for GbE ports subchannel 1 to 10 Default 1 VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring Connections for Voice Ports 3 21 Chapter 3 Configuration Parameter TOS VLAN Parameters 3 22 Function Specifies the Layer 3 priority assigned to the traffic generated by this bundle This priority is indicated by the IP type of service ToS parameter for this bundle The specified value is inserted in the IP TOS field of the bundle IP packets When supported by an IP network the type of service parameter is interpreted in accordance with RFC 791 or RFC 2474 asa set of qualitative parameters for the precedence delay throughput and delivery reliability to be provided to the IP traffic generated by this bundle These qualitative parameters may be used by each network that transfers the bundle IP traffic to select specific values for the actual service parameters of the network to achieve the desired quality of service You can also specify a Layer 2 priority by means of the VLAN Priority field provided VLAN Tagging for this bundle is Enable Used to configure the use of VLANs for voice packets VLANs are relevant only when the traffic traverses Ethernet based networks Selecting VLAN Parameters displ
69. affic using very specialized algorithms there is no guarantee that a sinusoidal tone can pass 4 24 Frequently Asked Questions VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics Q A undistorted hence the transmitted test tone might suffer amplitude and or phase distortions although voice can be satisfactorily transmitted In any case do not use tones with special functions that are detected by VC E1 16 relay mechanisms for example a 1100 Hz CNG will cause the VC E1 16 to switch into fax relay mode if fax relay is enabled a 2100 Hz fax modem CED will cause the VC E1 16 to switch into VBD if modem relay is enabled a 2000 Hz COT Continuity Test will be relayed only if Custom Tone Detection is enabled The above tones may be detected within a range of 50 Hz around the nominal frequency e g 1080 Hz can be detected as 1100 Hz Therefore when testing voice frequency across VC E1 16 you should avoid the following frequency ranges 1050 1150 Hz 1950 2150 Hz Is it possible to send a BER test pattern across a VC E1 16 voice channel No VC E1 16 performs voice compression not circuit emulation and therefore it does not reconstruct at the remote end the original bit stream that was transmitted into the VC E1 16 at the local end Moreover the audio signal received by the local VC E1 16 is compressed and silence suppression techniques are also ap
70. amer of that port returns the receive signal towards the LIU via the transmit path of the same port F gure 4 6 shows the signal paths when a remote loopback is activated on an external data port MMMM Voice Voice Hi TX Port M Compression l Interface and 1 gt RX Timeslot Cross Connect Figure 4 6 Remote Loopback on External Data Port This test checks the whole transmission path between any remote user s equipment that connects through the network to the local data port including the interconnecting transmission and switching plant it also tests the LIU of the VC E1 16 data port e When the loopback is activated on a data port connected to the SDH network that is connected to an SDH port via the Gmux 2000 telecom buses the El framer returns the received signal to the SDH mapper via the transmit path of the same port Figure 4 7 shows the signal paths when a remote loopback is activated on a data port connected to the SDH network r Gmux 2000 Telecom Buses Voice Data Port Compression Framer and Timeslot Cross Connect 1 VC E1 16 STM1 Module To SDH Network STM1 Module e Figure 4 7 Remote Loopback on Data Port Connected to SDH Network VC E1 16 Diagnostic Functions VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics This test checks the whole transmission path between
71. ameters in accordance with the prescribed configuration data 4 Repeat the procedure for each port connected to the SDH network You can use the F and B keys to select the next previous port Table 3 4 lists the physical layer configuration parameters for VC12 Channel Table 3 4 VC 12 Path Parameters Parameter Function Values Channel VC12 Selects the number of the port for The range depends on the operating mode which the path parameters will be VC16E1_US_NE only the voice ports are connected configured to the SDH ports 1 to 16 for VC E1 16 1 to 12 for VC E1 12 VC16E1_UE_NS only the data ports are connected to the SDH ports 1 to 4 VC16E1_US_NS both voice and data ports are connected to the SDH ports 1 to 16 for VC E1 16 1 to 12 for VC E1 12 for the voice ports and 17 to 20 for the data ports corresponding to data ports 1 to 4 Default 1 Connect State Controls the connection of the port NC The port is disconnected from the telecom to the Gmux 2000 telecom buses buses and therefore the flow of traffic is disabled which connect the internal traffic to This state should be selected as long as the the STM1 modules configuration of the corresponding port has not yet been completed or when it is necessary to stop traffic flow between the port and the telecom buses CONNECTED The flow of traffic is enabled Default CONNECTED AIS amp RDI on Controls the sending of AIS and RDI ENABLE AIS and RDI are sent
72. an reset the status counters by a C clear command Table 4 6 presents the bandwidth control status parameters Parameter Bw Ctrl Current State Table 4 6 Bandwidth Control Status Parameters Description Displays the current bandwidth control state e Normal normal operation mode new calls are accepted e Discard calls can still be set up but the traffic load is high and therefore the bandwidth control mechanism randomly discards voice paclets to prevent overload e Disable New Calls set up requests for new calls are rejected because of excessive traffic load Stop New Calls Sec Total number of seconds during which new calls have been blocked Discarded Voice Packets Sec Total number of seconds during which voice packets have been randomly discarded Max Delta Bw Byte Total packet traffic load reduction in bytes as a result of the bandwidth control mechanism If you want to reduce the effects of the bandwidth control mechanism it is necessary to increase the available transport bandwidth The increase should be sufficient to compensate for the average data rate reduction You can estimate the long term average data rate reduction as follows Data Rate bps 8 x Max Delta Bw Byte Discarded Voice Packets Sec Displaying Connection Performance Monitoring Data The connection bundle performance monitoring data displays the bundle state identifies the exit port and provides detailed inform
73. ance with the selected ITU T Rec Q 50 protocol Annex A or Annex B The time this indication reaches the local switches PBXs is the response which typically 100 to 200 msec The time this indication reaches the remote switches PBXs is longer as it also depends on the network propagation delay The network delay naturally depends on other factors external to VC E1 16 4 26 Frequently Asked Questions VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics Q used the bandwidth calculator to calculate the network connection bandwidth needed for my application using an estimated silence percentage What will happen if my silence percentage estimation was too high and as a consequence will exceed the bandwidth over the VC E1 16 El network connection The bandwidth calculator included in the documentation CD is a tool that helps you estimate the bandwidth required in a certain application situation Since it only provides you with an estimate we recommend monitoring the silence percentage after actual deployment of the system and recalculating the required bandwidth When the available bandwidth is exceeded some of the packets are lost and there will be some voice quality degradation Activating the bandwidth control feature can minimize the impact on voice quality The frame size and the packetization interval affect the transmission throughput and the delay Smaller f
74. and then to the wall socket If a power switch is provided in the equipment set it to the OFF position If the power cord cannot be readily disconnected in case of emergency make sure that a readily accessible circuit breaker or emergency switch is installed in the building installation In cases when the power distribution system is IT type the switch must disconnect both poles simultaneously Connecting DC Power Unless otherwise specified in the manual the DC input to the equipment is floating in reference to the ground Any single pole can be externally grounded Due to the high current capability of DC power systems care should be taken when connecting the DC supply to avoid short circuits and fire hazards DC units should be installed in a restricted access area i e an area where access is authorized only to qualified service and maintenance personnel Make sure that the DC power supply is electrically isolated from any AC source and that the installation complies with the local codes The maximum permissible current capability of the branch distribution circuit that supplies power to the product is 16A The circuit breaker in the building installation should have high breaking capacity and must operate at short circuit current exceeding 35A Before connecting the DC supply wires ensure that power is removed from the DC circuit Locate the circuit breaker of the panel board that services the equipment and switch it to the OFF pos
75. any product that supports substantially similar functionality as the VC E1 16 VC E1 12 based on or derived in any way from the VC E1 16 VC E1 12 Your undertaking in this paragraph shall survive the termination of this Agreement This Agreement is effective upon your opening of the VC E1 16 VC E1 12 package and shall continue until terminated RAD may terminate this Agreement upon the breach by you of any term hereof Upon such termination by RAD you agree to return to RAD the VC E1 16 VC E1 12 and all copies and portions thereof For further information contact RAD at the address below or contact your local distributor International Headquarters North America Headquarters RAD Data Communications Ltd RAD Data Communications Inc 24 Raoul Wallenberg Street 900 Corporate Drive Tel Aviv 69719 Israel Mahwah NJ 07430 USA Tel 972 3 6458181 Tel 201 5291100 Toll free 1 800 4447234 Fax 972 3 6498250 6474436 Fax 201 5295777 E mail market rad com E mail market radusa com 2005 2008 RAD Data Communications Ltd Publication No 358 209 07 08 Limited Warranty RAD warrants to DISTRIBUTOR that the hardware in the VC E1 16 VC E1 12 to be delivered hereunder shall be free of defects in material and workmanship under normal use and service for a period of twelve 12 months following the date of shipment to DISTRIBUTOR If during the warranty period any component part of the equipment becomes defective by reason of mater
76. apter 3 Configuration Installation and Operation Manual Note Note Note 3 Configure the El voice port parameters For the supervision terminal use Config gt Physical Layer gt I O gt E1 Port Voice 4 Configure the El data port parameters and data port backup configuration For the supervision terminal use Config gt Physical Layer gt I O gt E1 Port Data 5 Configure the parameters related to SDH transport where applicable required only when using SDH ports Configure the VC 12 path parameters for each VC E1 16 port connected to the SDH network For the supervision terminal use Config gt Physical Layer gt 1 0 gt VC12 Channel Configure the mapping of the VC 12s carrying the VC E1 16 traffic on the prescribed STM1 module port s For the supervision terminal use Config gt Physical Layer gt I O gt Telecom Assignment for the prescribed STM1 module s 6 Configure connection and routing parameters for VC E1 16 voice ports Configure connection and routing parameters for each bundle that handles VC E1 16 voice port traffic For the supervision terminal use Config gt Connection e You can configure a bundle using a GbE port as its exit port only after the GbE module has been fully configured in accordance with the GbE Installation and Operation Manual e VC E1 16 uses the host IP address of the CONTROL module as its IP address Therefore make sure that the CONTROL module host IP address has already been co
77. at implement VAD Voice Activity Detection and Silence Suppression mechanisms PSQM cannot synchronize between the reference and recorded files when there are gaps of silence hence the poor results Acceptable voice quality techniques are PAMS Perceptual Analysis Measurement System and PESQ Perceptual Evaluation of Speech Quality Can the VC E1 16 E1 ports provide an unbalanced 75 Q interface terminated in BNC connectors VC E1 16 E1 ports can be configured to provide balanced 120 Q or unbalanced 75 Q interfaces and therefore first select the unbalanced interface for the desired ports After selecting the the unbalanced interface use the following methods For data ports use the adapter cable CBL RJ45 2BNC E1 X offered by RAD For voice ports use an open ended cable e g CBL TELCO OPEN 2M or CBL TELCO OPEN 10M offered by RAD to connect to a patch panel with BNC connectors In addition conversion can also be achieved by use of an external balun converter such as BE 1 from RAD After activating a loopback on a VC E1 16 data port IP problems started to appear What Is the reason The loopback causes the IP traffic sent by the VC E1 16 port to be looped back This does not permit IP communication and therefore problems are reported Can a VC E1 16 voice connection be tested using voice frequency test equipment Yes but pay attention to the following considerations Since VC E1 16 compresses the voice tr
78. ate 4 3 VC E1 16 Diagnostic Functions In addition to the power up self test the VC E1 16 module also supports the following diagnostic functions e Voice ports local and remote loopbacks and test tone injection toward the local equipment e Data ports remote loopback The diagnostic functions are controlled by means of the Diagnostics Loopback menu This section describes the VC E1 16 module loopbacks Voice Port Diagnostic Functions Remote Loopback on Voice Port The remote voice port loopback returns the El receive signal of the tested port toward the local equipment connected to the port The loopback is activated at the line side of the El framer of the tested port which receives the signal through the SDH mapper for ports connected to the SDH network or the line interface unit LIU of the tested port e When a remote loopback is activated on an external voice port the El framer of that port returns the receive signal towards the LIU via the transmit path of the same port Figure 4 1 shows the signal paths when a remote loopback is activated on an external voice port This test checks the connections to the local voice port including the transmission plant connecting the local user s equipment to the VC E1 16 voice port and the E1 line interface of the VC E1 16 voice port e When the loopback is activated on a voice port connected to the SDH network that is connected to an SDH port located on the STM1 module
79. ated network management station for example RADview connected to a GbE port of one Gmux 2000 unit referred to as a management gateway can manage other Gmux 2000 units as well as Vmux 2100 Voice Trunking Gateways connected to the management gateway via VC E1 16 data ports Note Refer to the Gmux 2000 Installation and Operation Manual for a detailed description of management capabilities and general management configuration Instructions The following procedure assumes that the Gmux 2000 serving as management gateway has already been configured for management by the desired management station via one of its GbE ports in accordance with the Gmux 2000 Installation and Operation Manual The procedure has two sections e Configuring the management gateway to support inband management of remote units via VC E1 16 data ports e Configuring each managed unit for management via VC E1 16 data ports gt To configure the management gateway 1 For configuration by means of the supervision terminal use Configuration gt Management gt Managers List 2 Make sure that the management station is already configured in the Managers List as connected via the appropriate GbE port 3 Add the desired VC E1 16 module as a new manager Select Add on the Managers List Select Interface and specify the desired VC E1 16 module identified by its slot number for example VMUX SLOT 3 VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring Inband Mana
80. ation on the traffic carried by the bundle See also the nterpreting Sequence Numbers Data section below This capability provides a powerful tool for analyzing bundle utilization and for monitoring in real time the bundle traffic By resetting the status data at the 4 12 Performance Monitoring VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics desired instant it is possible to ensure that only current valid data is taken into consideration gt To display the connection bundle status 1 2 3 4 Note Select the Status monitoring task Select the Connection option Select the Bundle Counters option Select the desired Bundle ID by specifying its number in the range of 1 to 2000 You can select only existing bundles After selecting a specific bundle the bundle parameters are immediately displayed The display includes the following information Bundle number and its type TDMoIP CV Bundle state a Connected the bundle is connected and can carry traffic a Disconnected the bundle is administratively disconnected it is configured with Connect NO a IP OOS the bundle cannot carry traffic because the IP link to its destination is out of service To correct the problem first check that the exit port and the IP communication parameters are correctly configured that is correct destination IP address and correct next hop IP address If I
81. ations as they appear on supervision terminal and Telnet screens VC E1 16 can be configured to operate in four modes which differ with respect to signal flow among the TDM ports UE_NE US_NE UE_NS and US_NS The various operating modes are described below For clarity the voice compression signaling interface and main processor subsystems of Figure 1 9 have been shown as a single voice compression subsystem in the following figures Figure 1 10 to Figure 1 13 Note that in operating mode modes traffic from the active user ports can also be directed to the packet buses This connection from the main processor via the packet bus interface see Figure 1 9 has been omitted in Figure 1 10 to Figure 1 13 because it is always available irrespective of the selected mode UE_NE Mode In this mode VC E1 16 accepts user traffic from the 16 or 12 external E1 ports User External UE and sends the compressed traffic through the external E1 network ports of the module Network External NE see Figure 1 10 1 16 Functional Description VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 1 Introduction 7 LINK 1 4 16 E4 External ia Voice Lis External Voice Ports Compression Data Ports Connect LINK 2 Figure 1 10 Signal Flow in UE NE Mode US_NE Mode In this mode VC E1 16 accepts user traffic from the SDH ports User SDH US located on the STM1 module and sends the compressed traffic through
82. ays a submenu that includes the following selections e VLAN Tagging controls the use of VLAN tagging for the traffic generated by this bundle Configuring Connections for Voice Ports Installation and Operation Manual Values The ToS parameters are selected on a screen that opens after selecting the TOS parameter The current value of the TOS parameter 00 to FF hexa equivalent to 0 to 255 decimal is displayed at the top of the screen in hexadecimal notation The displayed TOS value is the sum of the parameter values selected for each ToS component and it is dynamically updated after selecting a value for each component The available selections for each ToS component are as follows each is listed from the lowest to the best value Precedence e Routine lowest e Priority e Immediate e Flash e Flash Override e Critical ECP e Internetwork Control e Network Control highest Delay e Normal e Low Throughput e Normal e High Reliability e Normal Reliability e High Reliability Default 00 ENABLE VLAN tagging is enabled DISABLE VLAN tagging is disabled Default DISABLE VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration Parameter Function Values e VLAN ID when VLAN tagging is enabled The allowed range in accordance with IEEE specifies the VLAN ID number used by the 802 3Q is 1 to 4094 bundle traffic sent through this port 0 mea
83. bchannel provided the available bandwidth is sufficient The voice packets transmitted to the network are inserted in a multiplexed frame structure The frame can include a total of 100 to 1461 bytes where a smaller number yields lower delays and a larger size improves bandwidth utilization efficiency A time out interval 10 to 90 msec is also defined after which the current frame is sent even if it is not filled up completely Estimating Bandwidth Requirements Two basic methods of encapsulation and multiplexing of voice packets are supported by VC E1 16 TDM for use over IP networks TDMoIP and AAL2 for use over MPLS networks AAL20MPLS Both methods take the packets containing the compressed voice and add additional data for enabling transport over the corresponding type of network e For TDMoIP the data includes UDP encapsulation followed by encapsulation in Ethernet frames with or without VLAN information 1 24 Functional Description VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 1 Introduction e For AAL2oMPLS the data includes MPLS encapsulation followed by encapsulation in Ethernet frames with or without VLAN information Note In addition to traffic packets VC E1 16 also sends connectivity check packets The size of the voice packets depends on the selected coding method and on the encapsulation method Since a significant fraction of the number of bytes in each packet is used t
84. ber of protocol packets transmitted Tx Total Bytes Total number of protocol data octets transmitted Tx 60 sec Frames Number of protocol packets transmitted during the last 60 seconds Tx 60 sec Bytes Number of protocol data octets transmitted during the last 60 seconds Tx UN Err Total number of transmit buffer underrun events Tx Over Discard Total number of protocol packets intended for transmission that have been discarded due to lack of buffer resources Tx Q Max Frames The maximum number of protocol packets that were queued at any time in the transmit queue Tx Q Cur Frames 4 6 Performance Monitoring The current number of protocol packets that are waiting for transmission in the transmit queue VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics gt To display HDLC transport status data for data ports Note Note l DP oy UU ah W y 8 Select the Status monitoring task Select the Physical Layer statistics option Select the desired VC E1 16 module by specifying its I O slot number Select the EL port type data see 7able 4 1 Select the HDLC Counters option Select the desired data port see 7ab e 4 1 Select the desired subchannel relevant only when using a framed mode in the range of 1 to 10 When ready send a Display command You can reset the status counters by a C clear command Table
85. c object that may come into contact with energized parts Unless otherwise specified all products are intended to be grounded during normal use Grounding is provided by connecting the mains plug to a wall socket with a protective ground terminal If a ground lug is provided on the product it should be connected to the protective ground at all times by a wire with a diameter of 18 AWG or wider Rack mounted equipment should be mounted only in grounded racks and cabinets Always make the ground connection first and disconnect it last Do not connect telecommunication cables to ungrounded equipment Make sure that all other cables are disconnected before disconnecting the ground Some products may have panels secured by thumbscrews with a slotted head These panels may cover hazardous circuits or parts such as power supplies These thumbscrews should therefore always be tightened securely with a screwdriver after both initial installation and subsequent access to the panels Connecting AC Mains Make sure that the electrical installation complies with local codes Always connect the AC plug to a wall socket with a protective ground The maximum permissible current capability of the branch distribution circuit that supplies power to the product is 16A The circuit breaker in the building installation should have high breaking capacity and must operate at short circuit current exceeding 35A Always connect the power cord first to the equipment
86. ce ports each comprising an E1 framer and a port interface e Inthe transmit path each voice port synchronizes to the incoming El stream terminates timeslot O collects the payload from the incoming El timeslots and sends the audio signals to the voice compression subsystem The port signaling information is collected by the signaling interface and sent to the main processor for processing e Inthe receive path each port collects the decompressed audio signals from the voice compression subsystem and the restored signaling information from the signaling interface adds the framing overhead and rebuilds the E1 frame in accordance with the selected framing mode VC E1 16 VC E1 12 GM 2000 Ver 3 2 Functional Description 1 11 Chapter 1 Introduction Installation and Operation Manual The voice ports support the following framing modes e Basic G 704 framing with or without support for CRC 4 in accordance with ITU T Rec G 704 and G 706 The CRC 4 option should be selected whenever possible because it allows to monitor the E1 link transmission performance The basic G 704 framing mode is required for applications that require CCS The user can specify the timeslots that carry the CCS protocol up to two timeslots These timeslots are then transferred to the main processor for processing The supported CCS protocols are ISDN QSIG and SS7 e G 704 framing with timeslot 16 multiframe G 704 multiframe mode with or without support for
87. ces the number of VC 12s needed on the STM 1 link thereby freeing bandwidth for other applications Up to 5 or 6 VC E1 16 SDH 261 STM1 VC E1 16 Compressed STM 1 lt SIMA Uncompressed gi g Compressed Aun X lt STM 1 Voice Pioa Uncompressed Gmux 2000 Switch Ios with Connect VC E1 16 Modules Figure 1 6 Voice Trunking over STM 1 Link Interoperability with Vmux Family Products VC E1 16 modules are fully interoperable with the RAD Vmux family of Voice Trunking Gateways Figure 1 7 shows a Gmux 2000 equipped with VC E1 16 modules connecting a large number of E1 voice trunks to multiple locations using a much smaller number of E1 links to carry the compressed voice traffic An important advantage of VC E1 16 is that it provides for inband management of the individual Vmux units by means of the same network management station for example RADview SC Vmux that is used to manage the Gmux 2000 in which the VC E1 16 module is installed The management station can connect to the Gmux 2000 from a remote location via the GbE module E1 ae Vmux 2100 Up to 112 E1s or Up to 14 E1 Single STM 1 p to s TDM FXS Se Es Vmux 210 Gmux 2000 RSS with VC E1 16 Modules 5 E1 Vmux 110 Figure 1 7 Interoperability with Vmux Equipment over TDM Networks Figure 1 8 shows a similar application that uses an IP network for connecting to the Vmux 2100 units VC E1 16 VC E1 12 GM 2000 Ver
88. channels for 30 timeslots per trunk or 2604 2232 and 1860 for 31 timeslots per trunk To improve availability VC E1 16 and VC E1 12 data ports can be configured to provide backup for the connection to the network In this case the data ports operate in pairs in each pair one port serves as the main primary port and the other as backup secondary port At any time only one port of each pair carries traffic As long as the primary port can carry the traffic it is automatically selected as the active port in case of a problem on the link or in the port VC E1 16 VC E1 12 GM 2000 Ver 3 2 Overview 1 3 Chapter 1 Introduction Installation and Operation Manual hardware the traffic is automatically switched to the backup port Switching is revertive This means that when using backup over the external E1 data network side ports only one El port is available when using the internal SDH network ports with backup enabled an additional set of internal data ports becomes available and therefore the maximum number of E1 data ports is four two primary and two secondary For maximum service availability Gmux 2000 offers N 1 protection for 1 0 modules This protection mode described in detail in Gmux 2000 Installation and Operation Manual is available for VC E1 16 modules configured to use only internal ports for both voice and data In the N 1 protection mode one VC E1 16 module is assigned to serve as a hot standby for the other
89. cifies that only signaling bits A B be used for call setup e For ongoing calls VC E1 16 has an additional mechanism that discards a small portion of voice packets on each call when the available bandwidth is not sufficient to transfer the offered traffic This mechanism does not depend on support by the connected equipment and is always active The user can configure the threshold at which voice packets start to be discarded which must always be higher than the threshold specified for call rejection using ITU T Rec Q 50 The algorithm used by VC E1 16 for this purpose leads to a temporary degradation of voice quality that in many cases is quite tolerable and is always preferable to call disconnection as a result of congestion During congestion conditions buffers may overflow and are flushed Therefore overflow event are very disruptive because they effectively disconnect the link and any means for avoiding congestion has a very positive effect on voice transmission e The last bandwidth control mechanism at the VC E1 16 level is used to block new modem calls when bandwidth utilization reaches a certain threshold Since modem calls can be transmitted either as analog voiceband signals or using relaying separate thresholds are used for each type of modem call Processing of Transparent Timeslots Timeslots configured for transparent transfer bypass the voice compression subsystem and are converted to packets without any compress
90. conds Rx Total Bytes Total number of received data octets Tx Total Bytes Total number of transmitted data octets Rx 60 sec Bytes Number of data octets received during the last 60 seconds Tx 60 sec Bytes Number of data octets transmitted during the last 60 seconds Tx on Timeout Total number of packets transmitted before reaching the maximum configured size as a result of reaching the maximum configured packetizing interval Tx 60 sec Timeout Number of packets transmitted before reaching the configured size as a result of reaching the maximum configured packetizing interval during the last 60 seconds Tx Max Size Total number of packets transmitted as a result of reaching the maximum configured size Tx 60 sec Max Size Number of packets transmitted as a result of reaching the maximum frame configured size during the last 60 seconds Rx Total Sg Total number of received signaling packets Tx Total Sg Total number of transmitted signaling packets Rx Total Voice Total number of received voice packets Tx Total Voice Total number of transmitted voice packets Rx 60 sec Voice Number of voice packets received during last 60 seconds Tx 60 sec Voice Number of voice packets transmitted during last 60 seconds Rx Total Hdlc Total number of received data packets Tx Total Hdlc Total number of transmitted HDLC packets Rx 60 sec Hdlc Number of HDLC packets received dur
91. cted to the selected bundle Confirm the connection by selecting Connect the TS Range to Bundle gt To assign all the voice port timeslots to one bundle l 2 3 4 5 Select Assign Entire Port to Bundle Select existing Bundle range is 1 to 2000 Select Ts Type and specify the type assigned to all the port timeslots Select Dest Port and enter the prescribed far end port number Confirm by selecting Connect Entire Port to Bundle 10 Configuring VC E1 16 VC E1 12 Modules VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Quick Start Guide Configuring Timeslot Assignment for Data Ports Use Config gt Connection gt TS Assignment gt To assign individual data port timeslots l 2 Select Sub Channel range is 1 to 10 To assign individual timeslots select Ts Type CONNECTED or NC not connected gt To assign all the data port timeslots to one bundle l 2 3 Select Assign Entire TSs to Port Select Sub Channel range is 1 to 10 Confirm by selecting Connect Entire Time Slots to Port Configuring N 1 Protection for VC E1 16 Modules l Open the Config gt System Redundancy gt I O screen and type X to add a new APS group Open the APS Configuration screen for the new APS group and select N 1 for Config Mode Select the desired Recovery Mode Revertive or Non Revertive For the Revertive mode specify the Time to Restore value Open the APS Mapping screen and en
92. ctions for Voice Ports The available range is 1 to 62 of the bundle bandwidth Default 62 3 29 Chapter 3 Configuration MF Parameters Used to control the MF processing parameters for this bundle DTMF relaying is always active irrespective of the selection made for MF signals relaying means that the DTMF signals are decoded the corresponding digits and codes are transmitted as data to the other end where the original DTMF signal is regenerated The MF signal processing parameters are selected on a separate screen that opens when MFCR2 RELAY is ENABLE The MF Parameters option is not displayed when the Coder Rate parameter is G 711 A Law or G 711 u Law because relaying of tones is not necessary for these coders which transfer complex signals without waveform distortion Minimum Pulse Width msec Selects the minimum pulse width of the MF tone that will be accepted for relaying Minimum Power Level dBm Selects the minimum power of the MF tone that will be accepted for relaying MFC Spoofing Controls the use of MFC tone spoofing Tone Ack Interval Installation and Operation Manual MFCR2 RELAY ENABLE MFR2 R2 MFC tone identification is enabled and thus tone relay is enabled MFCR2 RELAY DISABLE MF signals identification is disabled Default DISABLE The supported range is 45 to 300 milliseconds Default 50 The supported range is 1 to 35 dBm Default 20 ENAB
93. d safety precautions during installation operation and maintenance of this product Before performing any internal settings adjustment maintenance or repairs Caution a igs The VC E1 16 module contains components sensitive to electrostatic discharge ESD To prevent ESD damage always hold the module by its sides and do not touch the module components or connectors Caution To prevent physical damage to the electronic components assembled on the two sides of the module printed circuit boards PCB while it is inserted into its chassis slot support the module while sliding it into position and make sure that its components do not touch the chassis structure nor other modules VC E1 16 VC E1 12 GM 2000 Ver 3 2 Safety 2 1 Chapter 2 Installation and Operation 2 2 Installing the Module Installation and Operation Manual VC E1 16 modules require only one internal setting the selection of the module operating mode All the module configuration parameters are determined by software and therefore there are no additional preparations before installation VC E1 16 modules may be installed in an operating unit hot insertion Selecting Module Operating Mode Before installing the module select its operating mode that is the type of voice and network ports that are active The supported operating modes are described in Chapter 1 gt To select the module operating mode 1 Using Figure 2 1 identify switch SW2 o
94. duction e Modem relaying is similar to fax relaying except that the DSP emulates a voiceband modem instead of a fax modem The recognized modem protocols include V 22 V 22bis V 32 V 32bis and V 34 up to 21 6 kbps e Voiceband transmission using the selected voiceband coder can be configured by the user for all the modem calls When modem relaying is enabled voiceband transmission is automatically used for any unrecognized modem protocol Handling of Voice Trunk Signaling Two voice trunk signaling methods are in use CAS and CCS CAS Handling Channel associated signaling CAS can be used when an El voice port uses G 704 framing with timeslot 16 multiframe Timeslot 16 carries the signaling information four signaling bits designated A B C D are used for each channel for a total of 30 signaling channels Each VC E1 16 voice port needs to retrieve the CAS information needed by each channel timeslot and transfer it within the voice packets to the far end To provide the flexibility needed to adapt to variations to the standard signaling codes that are sometimes implemented by PBX equipment manufacturers VC E1 16 supports the definition of specific interpretation or translation rules called signaling profile The profile modifies the signaling information in the direction from the network to the PBX local user side Each VC E1 16 voice port can use a different signaling profile The total number of different signaling pr
95. e maximum voice compression capacity 7 modules can be reached only when using the external VC E1 16 or VC E1 12 module ports when using internal ports STM1 modules must be installed in the chassis thereby reducing the number of slots available for modules by one for each STM1 module installed The maximum number of VC E1 16 or VC E1 12 modules decreases by one for each installed STM1 module e With VC E1 16 modules the maximum capacities are as follows Without STM1 modules in the chassis 7 VC E1 16 modules yield 112 El voice trunks per chassis Assuming that one timeslot is reserved for signaling for example timeslot 16 for CAS or any timeslot for CCS the number of voice timeslots per E1 trunk is 30 resulting in a maximum capacity of 3360 voice channels per module When CCS protocols such as SS7 are used the signaling information can be separately carried in accordance with customer s signaling transfer method in this case the number of voice timeslots per trunk can reach 31 for a maximum capacity of 3472 channels per module One STM1 module and 6 VC E1 16 modules yield a maximum capacity of 96 El trunks per chassis 2880 respectively 2976 voice channels Two STM1 modules and 5 VC E1 16 modules yield a maximum capacity of 80 El trunks per chassis 2400 respectively 2480 voice channels e With VC E1 12 modules the respective maximum capacities are 84 72 and 60 El voice trunks up to 2520 2160 and 1800 voice
96. e De identities the transmit direction from the local user s equipment to the VC E1 16 port 6 Select the desired voice port see Zable 4 1 7 When ready send a Display command 8 You will a table with the timeslot signaling information The signaling information consists of four bits designated ABCD in the applicable standards see Appendix C of the Gmux 2000 Installation and Operation Manual The interpretation of these bits depends on the specific channel type Displaying VC E1 16 Physical Layer Bandwidth Control Status Data VC E1 16 supports a proprietary bandwidth control method that supplements the ITU T Rec Q 50 capabilities You can read the results of the bandwidth control function for each voice port to evaluate the effects of bandwidth control By resetting the status data at the VC E1 16 VC E1 12 GM 2000 Ver 3 2 Performance Monitoring 4 11 Chapter 4 Troubleshooting and Diagnostics Installation and Operation Manual desired instant it is possible to ensure that only current valid data is taken into consideration gt To display the bandwidth control status A Oy RUE od NM ES Note Select the Status monitoring task Select the Physical Layer option Select the desired VC E1 16 module by specifying its I O slot number Select the EL port type voice see 7able 4 1 Select the Bandwidth Control option Select the desired voice port see 7ab e 4 1 When ready send a Display command You c
97. e connection defined 0 means that no source CBID has been by means of this bundle defined MPLS ETH Selects the inbound MPLS label The supported range is 1 to 8063 Each accepted for this bundle bundle must have a unique inbound MPLS label O means that no label has been defined Default O Dest CBID The function depends on the PSN Type UDP IP Selects the circuit bundle identifier at The supported range is 1 to 8063 the destination endpoint of the connection O means that no source CBID has been defined by means of this bundle defined MPLS ETH Selects the outbound MPLS label The supported range is 1 to 8063 0 means accepted for this bundle that no label has been defined Do not reuse the same Dest CBID value on Default O bundles terminating at the same destination IP address and or using the same VLAN ID when VLAN tagging is enabled Exit Port Select the port through which the traffic To specify a VC E1 16 data port generated by this bundle will be sent Enter the 1 0 slot of the VC E1 16 module You can select either a VC E1 16 data port or that will use this bundle and the data port one of the GbE module ports number 17 or 18 when using backup enter only the number of the primary port Separate the two digits by a slash To specify a GbE module port Enter the 1 0 slot 6 or 8 and the physical port number 1 or 2 of the desired GbE port Separate the two digits by a slash Default 0 0 Exit Channel When using as exit port
98. e detection of a modem or fax signal can be fine tuned For bundles expected to carry non standard fax protocols which are not recognized by the VC E1 16 DSPs the user can configure voiceband fax transmission In this case a timeslot carrying a fax transmission is handled as an analog voiceband signal with unknown characteristics and it is therefore transferred using one of the following types of coders which are both capable of transferring complex waveforms with little distortion e ITU T Rec G 711 A law or u law PCM coder the same coders available for uncompressed voice which require a channel rate of 64 kbps PCM requires a bandwidth on the order of one timeslot on the network side e ITU T Rec G 726 ADPCM coders which compress the signal to a channel rate of 32 kbps commonly used in Europe and other countries using the E1 based hierarchy or 24 kbps commonly used in North America and in countries using the Tl based hierarchy ADPCM provides performance very close to PCM but requires significantly less bandwidth 40 to 50 of that required by PCM on the network side The selected voiceband coder is used for both fax and modem voiceband transmissions Handling of Voiceband Modem Signals VC E1 16 handle voiceband modem signals using either relaying or voiceband signal transmission as selected by the user 1 22 Functional Description VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 1 Intro
99. e harmful interference in which case the user will be required to correct the interference at his own expense Canadian Emission Requirements This Class A digital apparatus meets all the requirements of the Canadian Interference Causing Equipment Regulation Cet appareil num rique de la classe A respecte toutes les exigences du R glement sur le mat riel brouilleur du Canada Warning per EN 55022 CISPR 22 Warning This is a class A product In a domestic environment this product may cause radio interference in which case the user will be required to take adequate measures Avertissement Cet appareil est un appareil de Classe A Dans un environnement r sidentiel cet appareil peut provoquer des brouillages radio lectriques Dans ces cas il peut tre demand l utilisateur de prendre les mesures appropri es Achtung Das vorliegende Ger t f llt unter die Funkstorgrenzwertklasse A In Wohngebieten k nnen beim Betrieb dieses Ger tes Rundfunkstrorungen auftreten f r deren Behebung der Benutzer verantwortlich ist Mise au rebut du produit Afin de faciliter la r utilisation le recyclage ainsi que d autres formes de r cup ration d quipement mis au rebut dans le cadre de la protection de l environnement il est demand au propri taire de ce produit RAD de ne pas mettre ce dernier au rebut en tant que d chet municipal non tri une fois que le produit est arriv en fin de cycle de vie Le client devrait proposer des
100. e management system being used e Supervision terminal Telnet or Web browser Refer to the Gmux 2000 Installation and Operation Manual for instructions Note On the supervision terminal screens the VC E1 16 and VC E1 12 modules are identified as VCI6E1 respectively VCI2E1 or VMX E1 See also Table 3 1 e Network management system e g the RADview network management system refer to the RADview User s Manual for instructions For general instructions additional configuration procedures and background information refer to the Gmux 2000 Installation and Operation Manual 3 2 Configuration Sequence Note f N 1 protection will be used for VC E1 16 or VC E1 12 modules do not prepare configuration data for the protection module in the N 1 APS group To put a VC E1 16 or VC E1 12 module into service you need to perform the following activities 1 Include a VC E1 16 or VC E1 12 module not yet installed in the Gmux 2000 chassis into the database This allows preconfiguring the module parameters so that the module will immediately start operating in the desired mode as soon as it is installed in the chassis For the supervision terminal use Config gt System gt Card Type 2 Configure the VC E1 16 global parameters Signaling profiles for voice ports Bandwidth management parameters For the supervision terminal use Config gt Physical Layer gt I O VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuration Sequence 3 1 Ch
101. e supervision terminal use Config gt System gt Redundancy 1 0 To display status information and performance monitoring data on the module and its voice and data ports use the Monitoring menu as explained in the Gmux 2000 Installation and Operation Manual 3 3 Including a VC E1 16 in Gmux 2000 Database VC E1 16 has two groups of TDM ports e Voice user side ports identified as ports 1 to 16 for VC E1 12 the maximum number is 12 e Data network side ports identified as ports 17 18 or 17 to 20 the actual number depends on the module operating mode These ports transfer the processed user s payload to the network Note Fa In addition to the TDM ports the VC E1 16 has packet ports that enable using GbE ports as exit ports for the processed user s payload The user can connect each group of TDM ports either to the corresponding external PDH E1 ports of the module or to SDH ports located on STM1 modules When using SDH ports the connection is made via the Gmux 2000 internal telecom buses each VC E1 16 port can be mapped to any desired VC 12 The TDM port connections depend on the module operating mode which is selected by means of an internal switch as explained in Chapter 2 When a new module is programmed in the chassis it is necessary to manually specify the selected operating mode For the supervision terminal the type of ports external or SDH each group is connected to is selected by means of the Config g
102. e the definition of the MFC tone shape The goal is to lower the sensitivity of the DSP to MFC tones VC E1 16 VC E1 12 GM 2000 Ver 3 2 Frequently Asked Questions 4 25 Chapter 4 Troubleshooting and Diagnostics Installation and Operation Manual in a way that only real MFC tones will be handled as MFC tones thus avoiding false detection of speech tones voice as MFC tones To lower this sensitivity increase the MFC tone pulse width and lower its level However if the false detection problem is not observed it is recommended to leave the MFC tone pulse and level parameters at their default values Q What is the end to end processing delay contributed by the VC E1 16 when working with different compression algorithms coders A The end to end processing delay contributed by the VC E1 16 is as follows G723 1A 5 3 6 4 kbps 120 to 150 msec depending on packet interval G729 A 8 kbps 70 msec G 711 A law 64 kbps 45 msec When used in an IP network the VC E1 16 uses jitter buffers in order to compensate for packet delay variation The jitter buffers are implemented in the VC E1 16 DSPs Digital Signal Processors and they are automatically adapted to the packet delay variation The delay variation tolerance range is 10 to 300 msec Each timeslot has its own jitter buffer The size of the VC E1 16 jitter buffers is not user configurable The jitter buffer size is changed according to the packet delay variation which
103. e to Restore which ensures a minimum interval before flipping back 4 Open the APS Mapping screen and add the protection members in the following order the order is indicated by the automatically assigned numbers in the CH NUM column 1 The first module to be specified is the VC E1 16 or VC E1 12 module serving as the protection module in the format Slot Port where the port number must be O Note Aftera protection module is selected it cannot be changed To select another module first delete the N 1 protection group and then reconfigure another group with the required protection module e tis not necessary to define configuration parameters for the protection module the appropriate configuration parameters will be automatically downloaded by the CONTROL module when flipping is necessary 2 After the protection module is specified you can specify the protected VC E1 16 or VC E1 12 modules in any order For each module use the format Slot Port where the port number must be O a Fora Gmux 2000 equipped with a single STM1 module the maximum number of VC E1 16 or VC E1 12 modules that can be protected is 5 a Fora Gmux 2000 equipped with two STM1 modules the maximum number of VC E1 16 or VC E1 12 modules that can be protected is 4 3 To provide differential quality of service select for each module its protection Priority Low or High in the event that protection is required for two modules at the same time onl
104. e traffic carried in the timeslot The selection is made on a list that appears when the cursor is within the TS Type row Move the cursor under the timeslot and then select Change Cell to make a selection VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring VC E1 16 Port Timeslot Assignment 3 33 Chapter 3 Configuration Installation and Operation Manual NC Timeslot is not connected to the selected bundle VOICE Voice timeslot that is a timeslot with channel associated signaling information HDLC 1 Timeslot whose payload is interpreted as HDLC data for example a timeslot that carries CCS data SS7 1 Timeslot whose payload is interpreted as being signaling data per Signaling Scheme 7 The SS7 Keep Alive Suppression Rate parameter described in the Reducing Bandwidth Requirements for CCS Signaling section applies to this timeslot type Trans Transparent timeslot that is a timeslot whose payload is transferred without any processing to the far end for example a timeslot that carries encrypted voice or data Note Asan alternative you can first use the Assign Entire Port to Bundle or Assign TS Range to Bundle to precontigure the timeslots and their types and then modify only the different timeslots 3 When operating in a link with the Vmux Voice Trunking Gateway you need to specify the destination port and the port timeslot at the Vmux This is made by moving the cursor to the Dest Port respectively Dest TS rows and using the p
105. e worst value allowed by the E1 transmission standards BER of 10 it is quite possible that the bundle will go out of service from time to time depending on the setting of the connectivity parameters AIS will then be generated on both sides until the bundle connectivity is re established The bundle may remain up but some packets will be lost In this case the voice quality will be degraded In addition fax and modem transmission can be affected as well in case of packet loss VC E1 16 VC E1 12 GM 2000 Ver 3 2 Frequently Asked Questions 4 23 Chapter 4 Troubleshooting and Diagnostics Installation and Operation Manual gt Therefore it is not possible to guarantee that in the worst case scenario 10 the VC E1 16 will operate satisfactory Does VC E1 16 support ISDN data calls such as WAP V 110 The VC E1 16 does not support ISDN data calls Can the Signal to Noise ratio SNR be used to evaluate voice quality for VC E1 16 For compressed voice the compression algorithm preserves intelligibility but it is not possible to use SNR which measures the difference between the signal power and the noise floor to determine quality You must use voice quality tests such as MOS See also next question Why do get poor results when measuring voice quality over VC E1 16 using PSQM PSQM Perceptual Speech Quality Measurement is not a suitable voice quality measurement technique for VoIP and voice compression systems th
106. ecessary AIS amp RDI on DISABLE Path Trace ENABLE Mapping the Module Internal Ports to VC 12s Use the Config gt Physical Layer gt 1 0 gt Telecom Assignment screen for the prescribed STM1 module s to map each module internal port with Connect State set to Connected For detailed instructions refer to the Gmux 2000 Installation and Operation Manual Configuring Bundle Parameters Preliminary Bundle Configuration Steps Use Config gt Connection gt Bundle 1 To modify an existing bundle enter its number 1 to 2000 or select Add to define a new bundle 2 Select Config gt Connection Mode and then select TDMoIP CV 3 Select PSN Type to specify the type of packet switched network UDP IP UDP over IP MPLS ETH MPLS over Ethernet 4 Select Config gt Connection Configuration gt Function to specify packet structure For UDP IP a TDMoIP TDM over IP with RAD proprietary bandwidth efficient packet structure a TDMoIP TDM over IP with standard packet structure 6 Configuring VC E1 16 VC E1 12 Modules VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Quick Start Guide For MPLS ETH a AAL2oMPLS AAL2 over MPLS with RAD proprietary bandwidth efficient packet structure a AAL2oMPLS AAL2 over MPLS with standard packet structure 5 Select the Connection State of the bundle Enable or Disable Configuring Bundle Routing Parameters Use Config gt Connection gt Co
107. ect the protected module with the highest severity score yet a low priority module will get protected only when no protection is needed by a high priority module Voice Compression Subsystem The transmit path of the voice compression subsystem can convert each payload timeslot to a stream of packets for transmission through the network The relevant timeslots are selected by the user The packets are sent to the main processor which transfers the packets of each bundle of timeslots either to the appropriate internal data port and subchannel or to GbE module via the packet bus interface The receive path receives from the main processor streams of packets for each compressed payload timeslot and sends the decompressed voice streams to the corresponding voice port framer Signaling Processing Subsystem In the transmit path the signaling interface retrieves the signaling information of each port from the appropriate timeslots in accordance with the port signaling transfer mode CAS or CCS and transfers it to the main processor for processing In the receive path the signaling interface inserts the signaling information of each port restored by the main processor in the appropriate timeslots VC E1 16 modules do not use the signaling information the signaling information is only transmitted through the compressed voice connections for use by the user s equipment at the local and remote endpoints VC E1 16 VC E1 12 GM 2000 Ver
108. ection as possible without degrading the quality of service the following procedures are used e The VC E1 16 module can signal the equipment connected to voice ports for example a PBX that new calls cannot be accepted when a certain bandwidth utilization threshold is exceeded For this purpose VC E1 16 uses the relevant portions of the protocol specified in ITU T Rec Q 50 The threshold at which new calls will be rejected is selectable and the selection applies to all the voice ports ITU T Rec Q 50 specifies a protocol that uses 3 bits in timeslot 16 of the multiframes to establish a communication link between the VC E1 16 and the equipment connected to each voice port Since this protocol is effective only when the connected equipment supports it the use of the ITU T Rec Q 50 is separately configurable for each voice VC E1 16 VC E1 12 GM 2000 Ver 3 2 Functional Description 1 25 Chapter 1 Introduction Installation and Operation Manual port Moreover for compatibility with different implementations the user can select for each voice port the particular implementation ITU T Rec Q 50 Annex A in addition to the communication link in timeslot 16 this Annex enables the user to specify the signaling bits to be used for call setup Only two bits are used for this purpose either A B or C D these bits are selectable separately for each port VC E1 16 will ignore the other two bits ITU T Rec Q 50 Annex B this Annex spe
109. ed a total of three times at the receive side The two duplicated packets are dropped by the VC E1 16 and the freed sequence number counter is incremented by 2 The tracking window used to detect missing or duplicated packets is 30 packets wide Missing and duplicated packets will be recognized only if their sequence numbers are within this tracking window For example if the received packets are numbered 96 97 98 99 100 75 then packet 75 is recognized as a duplicate packet 100 75 25 which is less than 30 and therefore the packet is inside the window Therefore packet 75 is freed and therefore VC E1 16 now expects packet 101 to arrive from the network However if the received packets are numbered 96 97 98 99 100 65 then packet 65 cannot be recognized as a duplicate and is accepted 100 65 35 which is larger than 30 and therefore it is outside the window Now the card expects packet 66 to arrive if packet 101 would arrive instead then the Longest Miss Seq parameter will indicate 35 VC E1 16 VC E1 12 GM 2000 Ver 3 2 Performance Monitoring 4 15 Chapter 4 Troubleshooting and Diagnostics Installation and Operation Manual Note Bundle statistics must be cleared after the bundle has gone up otherwise the sequence number mechanism is irrelevant This is because the sequence number fields are meaningless during the bundle set up time that is during the time it takes the bundle to go into the connected st
110. ed in the following ways e Select individual timeslots on the corresponding VC E1 16 voice port For the supervision terminal use Config gt TS Assignment e Select a range of consecutive timeslots on the corresponding VC E1 16 voice port For the supervision terminal use Config gt Connection gt Assign TS Range to Bundle e When a bundle will carry the traffic of a whole E1 voice port the connection of the whole port to the bundle can be initiated either from Config gt Connection gt TS Assignment or from the E1 voice port physical parameters configuration screen Selecting Individual Timeslots When you select a specific VC E1 16 voice port you are provided with a timeslot map that includes the available timeslots for example if the port uses FRAMED MF or FRAMED MF CRC framing you will see only timeslots 1 to 15 and 17 to 31 timeslot 16 is reserved for CAS For FRAMED G 704 or FRAMED G 704 CRC framing all the 31 timeslots are included in the map To configure individual timeslot assignment 1 For each timeslot you need to select the serving bundle Move the cursor under the timeslot in the Bundle row and then select Change Cell and type the prescribed bundle number in the range of 1 to 2000 O means that the timeslot is not yet connected to a bundle The required bundles must be defined before starting timeslot assignment 2 For each timeslot you need to select its type The type determines the processing of th
111. ed parameters that ensure optimal operation With respect to 1780 and 2000 Hz tones and for MF based signaling for example MFR2 R2 and MFC relaying can be enabled disabled by the user For MF signaling the user can specify detection parameters for example then minimum level and duration a signal must exceed in order to be detected as a signaling code and can also enable MFC spoofing which shortens the call setup delay when using R2 MFC signaling by forcing an acknowledge after a user selectable interval Uncompressed voice channels using PCM that is ITU T Rec G 711 coders can transmit inband signaling without significant distortion yet DTMF and tone relaying are always preferable and should be enabled MF relaying is always disabled when using an ITU T Rec G 711 coder Automatic Fax Processing The processing of audio signals by low bit rate voice compression methods does not enable analog transmission of fax signals Therefore when it is expected that a compressed voice bundle will carry signals generated by fax machines it is necessary to enable the automatic fax relaying function When automatic fax relaying is enabled VC E1 16 will automatically recognize and transmit Group Ill fax messages at the standard rates in the range of 4 8 to VC E1 16 VC E1 12 GM 2000 Ver 3 2 Functional Description 1 21 Chapter 1 Introduction Installation and Operation Manual Note 14 4 kbps The maximum fax rate can be selected by
112. ed port operates normally while its own local loopback is activated With the local loopback is activated on the local VC E1 16 port the remote end user s equipment must receive its own signal and thus it must be frame synchronized K Voice Network Compression Interface Ral and AT Timeslot l Cross Connect Figure 4 3 Local Loopback on External Voice Port 4 18 VC E1 16 Diagnostic Functions VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics To SDH Network and STM1 Timeslot Module Cross Connect l l Voice Compression li u Timeslot M SAR Cross nterface RA t i Connect Buses Voice Compression Figure 4 4 Local Loopback on Voice Port Connected to SDH Network Test Tone Injection The test tone is a data sequence repeating at a rate of approximately 1 kHz This data sequence is identical to the data sequence that would have been generated if a signal at the test frequency having a nominal level of 1 mW 0 dBmO were applied to the input of the DSP serving the voice port Figure 4 5 shows the signal paths The test tone can be injected in any desired timeslot of a voice port toward any desired local voice channel When the local test tone injection is activated the data received from the remote end in the corresponding timeslot of the local voice port is replaced by the test tone sequence The resulting analog signal is th
113. em DISABLE V 23 ENABLE Tx Delay for Caller ID O to 3000 Echo Canceller ENABLE DISABLE Volume to Line 6 dB to 6 dB in 1 dB steps Coding A Law U Law Volume from Line 12 dB 6 to 6 dB in 1 dB steps VAD See below 12 dB Fax Modem See below CNG Mode ENABLE DISABLE MF Parameters MFCR2 RELAY DISABLE Advanced Voice Parameters See below MFCR2 RELAY ENABLE See below Fax Modem Parameter Values Parameter Values Modem DISABLE Fax Rate kbps 14 4 kbps ENABLE 4 8 kbps 9 6 kbps VBD Modem Op Mode VOICEBAND DATA Max VBD Modem Calls 1 to 62 RELAY VBD Rate G 711 64k 5 msec Max Relay Modem Calls 1 to 62 G 711 64k 10 msec G 726 32k G 726 24k Fax ENABLE DISABLE 8 Configuring VC E1 16 VC E1 12 Modules VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Quick Start Guide MF Parameters Parameter Values Minimum Pulse Width msec 45 to 300 Minimum Power Level dBm 1 to 35 MFC Spoofing DISABLE ENABLE Tone ACK Interval N 20 msec where N 3 to 20 60 to 400 msec Custom Tone Detection Parameter Values Tone Detection DISABLE ENABLE Tone Frequency For ENABLE 2000 Hz 1780 Hz 2000 Hz 1780 Hz VAD Parameter Values VAD Method Generic VAD Policy Internal VAD Policy Noise Level for VAD For Generic VAD Policy LOW OFF HIGH Advanced Voice Parameters Parameter Values Cdis CNG Detection Time 10 to 100 msec in multiples of 10 msec VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring VC
114. en used for this purpose but there are protocols that use other predetermined timeslots for example 15 30 31 Note ccs signaling is relevant only for E1 voice ports using the Framed G 704 or Framed G 704 CRC framing mode Since there are several CCS protocols in wide use generally it is necessary to transfer the signaling information transparently through the link in parallel with VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring VC E1 16 Global Parameters 3 7 Chapter 3 Configuration Installation and Operation Manual the voice pavload This approach uses the HDLC protocol and no bandwidth reduction is possible However one widely used protocol Signaling Scheme 7 SS7 uses two specific types of protocol signal units messages that do not carry signaling information e Link status signal units LSSUs are used to exchange information regarding the status of the SS7 signaling link between two equipment units After a signaling link is successfully set up between the SS7 link endpoints the LSSUs carry little new information e Fill in signal units FISUs are used just to keep the HDLC signaling link alive These messages do not carry any information payload and are transmitted only when there no other types of SS7 signal units to transmit In the absence of other signaling traffic the signaling links carry a significant number of FISUs To reduce the bandwidth wasted to transmit LSSUs and FISUs you can configure the VC E1 16
115. er two bits TU T Rec Q 50 Annex B this Annex specifies that only signaling bits A B be used for call setup e For ongoing calls VC E1 16 has an additional mechanism that randomly discards a small portion of voice packets on each call when the available bandwidth is not sufficient to transfer the complete traffic This mechanism does not depend on support by user s equipment and is always active 3 6 Configuring VC E1 16 Global Parameters VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration The algorithm used by VC E1 16 for this purpose leads to a temporary degradation of voice quality that in many cases is quite tolerable and is always preferable to call disconnection as a result of congestion The user can configure the threshold at which voice packets start to be discarded The default threshold is 94 make sure to select a threshold higher than the threshold specified for call rejection in accordance with ITU T Rec Q 50 e The last bandwidth control mechanism at the VC E1 16 level is used to block new modem calls when bandwidth utilization reaches a certain threshold Since modem calls can be transmitted either as analog voiceband signals or using relaying separate thresholds are used for each type of modem call A similar mechanism is supported at the connection bundle level gt To set the bandwidth control thresholds 1 On the Config gt Physical Layer gt I O screen of t
116. ereeeeeeeeeeennnees 2 6 Connector Data Tertre teen Rate E T 2 6 VGic Port Connector ossasuna ntaa a ai tele tee d nent ed entente 2 6 LINK EI Data Port CONNeCTOFS 54e crane berries due le dents eves reaver in Ea 2 8 Adapter Cables srs sriain E aa saguace se anne test EOE Ea 2 8 Adapter Cable CBL TELCO RJ45 16E1 iii 2 8 Adapter Cables CBL TELCO OPEN 2M CBL TELCO OPEN 10M ccccceeeeeeeeeees 2 9 Adapter Cable CBL RJ45 2BNC E1 X fcteesssideacheesnnusnateiddecdnatasteathudacaieatturanbennuntirs 2 11 CONNECTION INSTFUCTIONSsivis titties acide hares ee 2 11 Connecting User s Voice Equipment to the External Voice Ports 2 11 Connecting to External Data Ports 2 12 2 4 Normal IAdICAONS 28428 tt ontvannecased olga adc ed ce chee gen yada Rad ue 2 13 Chapter 3 Configuration Sil INMOGUCHON deevsvwekceeldin ea alii etait een eh eine data n mes ele aati elas 31 3 2 Configuration Sequence sais ies Ge aii Rik edie eee 3 1 3 3 Including a VC E1 16 in Gmux 2000 Database 2 0 0 0 ceceeeseeeeeeeececeeeeeeeeeeeeeeeeeeeeeeeeeeeees 2 8 3 4 Configuring VC E1 16 Global Parameters ss 3 4 Configuring Signaling Profiles iii 3 4 Bandwidth Ma hagement sister osni pan aia een ena Beek TENNENE RENES 3 6 Control over Maximum Bandwidth Requirements 0ccceeeeeeeeeeeeaeeeeeeeaeeeeeeeaaees 3 6 Reducing Bandwidth Requirements for CCS Signaling ceeeeeeeeeeeeeeeeeeeeeeeeeeees cor 3 5 Configuring El Voice Port Parameters
117. erefore supplied to the local subscriber As a result a 1 kHz tone should be heard clearly and loudly in the earpiece of a telephone set connected to the corresponding voice channel Test equipment can also be used to measure the test tone level in this case note that the nominal test tone level is changed in accordance with the Volume to Line parameter see Configuring Voice Parameters section in Chapter 3 selected for the tested timeslot The signal transmitted by the voice channel toward the other end remains connected to the corresponding transmit timeslot At any given time test tone injection can be activated in timeslots of only one voice port of the VC E1 16 module The number of timeslots is not limited Test Tone Figure 4 5 Test Tone Injection Path VC E1 16 VC E1 12 GM 2000 Ver 3 2 VC E1 16 Diagnostic Functions 4 19 Chapter 4 Troubleshooting and Diagnostics Installation and Operation Manual Data Port Diagnostic Functions 4 20 Remote Loopback on Data Port The remote data port loopback returns the El receive signal of the tested port toward the network via the network connection terminated at the tested port The loopback is activated at the line side of the El framer of the tested port which receives the signal through the SDH mapper for ports connected to the SDH network or the line interface unit LIU of the tested port e When a remote loopback is activated on an external data port the El fr
118. es loss of synchronization at the remote port directly connected to the local port For a voice port the destination port at the remote unit loses synchronization and sends AIS signal towards the PBX which also loses synchronization In response the PBX sends toward the local voice port a RAI indication A bundle serving a whole port is out of service thus causing the transmission of AIS signals to be transmitted from the relevant voice ports to the PBXs on both sides The El framing mode of connected PBX switch might be set to support CRC 4 while the local port is configured without CRC 4 support This G 22 Frequently Asked Questions VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics causes the PBX switch to signal to VC E1 16 port that it is not synchronized Q Can I use a VC E1 16 module in a link with a Vmux 2100 port with T1 framing A Yes VC E1 16 enables you to connect between sites using El based voice traffic and sites using Tl based voice traffic The only limitation is the total number of timeslots which is maximum 24 an E1 to E1 link can transfer 30 timeslots Make sure to configure each side with appropriate parameters in particular select the correct far end parameters for example correct companding laws and signaling profiles If any additional conversions are required on the signaling protocol itself for example between different natio
119. fax over links with a long delay Test results show that even with a delay of 900 msec in one direction there are no problem sending receiving fax messages Therefore according to this test it will be possible to use VC E1 16 in links that introduce long delays usually a satellite application and to be able to support a fax server application How does the VC E1 16 handle fax or modem transmission The DSP that is used by the VC E1 16 voice modules has a fax modem discriminator that allows it to detect and distinguish modem and fax start signals according to ITU T standards The VC E1 16 DSP has a fax relay When the DSP Digital Signaling Processor detects fax transmission over the voice channel it stops voice compression and transfers the fax transmission at a user configurable rate up to 14 4 kbps When in fax mode the DSP serves in fact just as a fax machine it demodulates the analog signal at the receiving end passes the resulting digital information to the remote end and then remodulates the digital info into an analog signal simulating the original fax machine Supported fax standards are G3 fax per ITU T Rec T 30 When modem transmissions can be handled in a similar way Supported modem standards are ITU T Rec V 34 33 6 kbps V 32bis 14 4 kbps V 22bis 4 8 kbps 4 6 Technical Support Technical support for this product can be obtained from the local distributor from whom it was purchased For further in
120. formation please contact the RAD distributor nearest you or one of RAD s offices worldwide This information can be found at www rad com offices About RAD gt Worldwide Offices distributors Where to Buy gt End Users 4 28 Technical Support VC E1 16 VC E1 12 GM 2000 Ver 3 2 RAD 24 Raoul Wallenberg Street Tel Aviv 69719 Israel Tel 972 3 6458181 Fax 972 3 6483331 972 3 6498250 E mail erika_y rad com Web site http www rad com The Access Company Customer Response Form RAD Data Communications would like your help in improving its product documentation Please complete and return this form by mail or by fax or send us an e mail with your comments Thank you for your assistance Manual Name VC E1 16 VC E1 12 Publication Number 358 209 07 08 Please grade the manual according to the following factors Excellent Good Fair Poor Very Poor Installation instructions o o o o o Operating instructions 0 o o o o Manual organization o o o o o Illustrations 0 o o o o The manual as a whole m m m o o What did you like about the manual Error Report Type of error s or problem s Incompatibility with product Difficulty in understanding text Regulatory information Safety Compliance Warnings etc Difficulty in finding needed information Illogical flow of information Style spelling grammar references etc o o o o O Missing information o o O Appearance
121. g of fax and voiceband modem signals All these functions are implemented by means of advanced digital signal processing DSP techniques Handling of Voice Signals The 64 kbps PCM encoded voice signals received through the VC E1 16 user voice ports can be compressed using one of the compression algorithms supported by the VC E1 16 modules To support voice transmission systems based on both El and T1 standards the user can specify the companding law used by the PCM sections A law or u law in accordance with ITU T Rec G 711 The low bit rate voice compression options and data rates supported by VC E1 16 are as follows e Voice compression using multiple pulse maximum likelihood code excited linear prediction MP MLQ per ITU T Rec G 723 1 at a channel data rate of 5 3 or 6 4 kbps e Voice compression using conjugate structure algebraic code excited linear prediction CS ACELP per Annex A of ITU T Rec G 729A at a channel data rate of 8 kbps 1 18 Functional Description VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 1 Introduction NORG When you can configure the caller ID signaling protocol Bellcore Type 1 or V 23 and delay the sending of the caller ID information by a user selectable interval In addition the user can also select uncompressed transmission which requires a channel rate of 64 kbps by specifying a PCM coder that is an ITU T Rec G 711 coder with A law or u law compand
122. gement via VC E1 16 Data Ports 3 37 Chapter 3 Configuration Installation and Operation Manual Select IP Address and enter the management address of the unit to be managed for example for a Gmux 2000 enter the IP address assigned to the Online CL on its Host IP screen Select Yes for Trap for Manager Do not change the other defaults leave Next Hop as 0 0 0 0 and VLAN Valid as NO gt To configure a managed Gmux 2000 unit 1 For configuration by means of the supervision terminal use Configuration gt Management gt Managers List 2 Make sure the management IP address of the managed unit the IP address assigned to the Online CL on the managed unit Host IP screen is within the subnet of the management gateway IP address 3 Select an appropriate VC E1 16 module one of the data ports of this module must be connected to a data port of the VC E1 16 in the management gateway that has been configured as explained above 4 Add the selected VC E1 16 module as a new manager Select Add on the Managers List Select Interface and specify the selected VC E1 16 module identified by its slot number for example VMUX SLOT 1 Select IP Address and enter the IP address of the management station the same as for the management gateway Select Next Hop and enter the management gateway IP address appears next to Online CL on the management gateway Host IP screen Select Yes for Trap for Manager Leave
123. he bandwidth is relatively constant for long intervals To safely use as much bandwidth on the network connection as possible without degrading the quality of service VC E1 16 supports three mechanisms e The VC E1 16 module can signal the equipment connected to voice ports for example a PBX that new calls cannot be accepted when network congestion occurs For this purpose VC E1 16 uses the relevant portions of the protocol specified in ITU T Rec Q 50 The bandwidth utilization threshold at which new calls will be rejected is selectable and the selection applies to all the voice ports The default threshold is 88 however a higher threshold can be safely selected ITU T Rec Q 50 specifies a protocol that uses 3 bits in timeslot 16 of the multiframes to establish a communication link between the VC E1 16 and the equipment connected to each voice port Since the Q 50 protocol is effective only when the connected equipment supports it the use of this protocol is separately configurable for each voice port Moreover for compatibility with different implementations the user can select for each voice port the particular implementation TU T Rec Q 50 Annex A in addition to the communication link in timeslot 16 this Annex enables the user to specify the signaling bits to be used for call setup Only two bits are used for this purpose either A B or C D these bits are selectable separately for each port VC E1 16 will ignore the oth
124. he VC E1 16 module select Bandwidth Control 2 To modify the global bandwidth utilization threshold at which a VC E1 16 voice port starts rejecting new calls select Q 50 Stop New Calls Threshold and then enter the desired value range 80 to 98 of available bandwidth 3 To modify the global bandwidth utilization threshold at which a VC E1 16 voice port starts discarding packets on active calls select Discard Voice Packets Threshold and then enter the desired value in the range of 81 to 99 of the available bandwidth Note A The Discard Voice Packets Threshold value must always be higher than the Q 50 Stop New Calls Threshold value 4 To modify the global bandwidth utilization threshold at which a VC E1 16 voice port starts blocking the set up of new voiceband modem calls select Block New Modem VBD Calls Threshold and then enter the desired value in the range of 20 to 98 of the available bandwidth 5 To modify the global bandwidth utilization threshold at which a VC E1 16 voice port starts blocking the set up of new modem relay calls select Block New Modem Relay Calls Threshold and then enter the desired value in the range of 20 to 98 Reducing Bandwidth Requirements for CCS Signaling An alternative method for call control is the common channel signaling CCS With CCS one or more timeslots are assigned to transmit the signaling information for all the voice channels carried by the VC E1 16 port Timeslot 16 is oft
125. he prescribed configuration data Note that some parameters are not applicable when the data ports are connected to SDH ports 4 Repeat the procedure for each data port You can use the F and B keys to select the next previous port Configuration Parameters for Framed Modes Table 3 3 lists the physical layer configuration parameters for the El data ports when the backup function is disabled and a framed mode is selected Table 3 3 E1 Data Port Physical Layer Parameters Backup Disabled Function Selects the data port to be configured Values 1 or 2 for a module using the external data ports and 1 to 4 for a module connecting to SDH ports Default 1 Admin Status See 7able 3 2 Backup Status Controls the use of backup ports for the connection to the ENABLE Backup is enabled See the Configuring Backup for the Network Side Connection section for details DISABLE Backup is disabled Default DISABLE Idle Code Selects the code transmitted to fill idle The available selections are 00 to FF hexa unused timeslots in the El frames Default FF transmitted through this port toward the equipment connected to the port Make sure to check that a valid idle code is selected This parameter is not relevant when the Line Type is UNFRAMED Restoration Used to change the frame CCITT Complies with ITU T Rec G 732 Time synchronization algorithm to reduce the TR 62411 Similar to the requirements of A
126. ial or workmanship and DISTRIBUTOR immediately notifies RAD of such defect RAD shall have the option to choose the appropriate corrective action a supply a replacement part or b request return of equipment to its plant for repair or c perform necessary repair at the equipment s location In the event that RAD requests the return of equipment each party shall pay one way shipping costs RAD shall be released from all obligations under its warranty in the event that the equipment has been subjected to misuse neglect accident or improper installation or if repairs or modifications were made by persons other than RAD s own authorized service personnel unless such repairs by others were made with the written consent of RAD The above warranty is in lieu of all other warranties expressed or implied There are no warranties which extend beyond the face hereof including but not limited to warranties of merchantability and fitness for a particular purpose and in no event shall RAD be liable for consequential damages RAD shall not be liable to any person for any special or indirect damages including but not limited to lost profits from any cause whatsoever arising from or in any way connected with the manufacture sale handling repair maintenance or use of the VC E1 16 VC E1 12 and in no event shall RAD s liability exceed the purchase price of the VC E1 16 VC E1 12 DISTRIBUTOR shall be responsible to its customers for any and all wa
127. ibed front panel LINK connector Connect coaxial cables to the prescribed user s equipment or patch panel connectors Connect the other end of each cable to one of the adapter cable BNC plugs Pay attention to correct connection a The red connector is the transmit output of the link port a The green connector is the receive input of the link port 2 12 Connecting Cables VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 2 Installation and Operation 2 4 Normal Indications Upon power up VC E1 16 is initialized During this interval the ACT indicator flashes at a steady rate and the FLT indicator must be off During normal operation after initialization is successfully completed 1 The ACT indicator must light and the FLT indicator must be off 2 After the connection to the local and remote equipment is established all the LOC and REM indicators of the VC E1 16 module must be off VC E1 16 VC E1 12 GM 2000 Ver 3 2 Normal Indications 2 13 Chapter 2 Installation and Operation Installation and Operation Manual 2 14 Normal Indications VC E1 16 VC E1 12 GM 2000 Ver 3 2 Chapter 3 Configuration 3 1 Introduction This Chapter provides specific configuration information for VC E1 16 and VC E1 12 modules The configuration activities are performed by means of the management system used to control the Gmux 2000 unit The instructions appearing in this Chapter assume that you are familiar with th
128. ibed user s equipment or patch panel connector Insulate unused connectors to prevent accidental short circuiting of their exposed contacts to metallic surfaces To connect using the CBL TELCO OPEN 2M or CBL TELCO OPEN 10M cable balanced and unbalanced interfaces 1 Route the cable through the cable guides provided in the rack to the required location and then connect its free ends in accordance with the prescribed termination method See above the Wofe regarding recommended routing 2 Connect the 64 pin connector of the cable to the module 1 16 El or 1 12 El connector 3 Connect the grounding lug of the cable connector to the grounding screw on the VC E1 16 or VC E1 12 module panel Connecting to External Data Ports Skip this section if the VC E1 16 or VC E1 12 module is configured to use SDH ports for connecting to the network Each LINK port can use one of the following interfaces only one can be active at any time e 120 Q balanced interface for operation over twisted pairs e 75 Q unbalanced interface for operation over coaxial cable Each link port has its own RJ 45 connector e To connect to equipment with balanced interfaces use a standard RJ 45 RJ 45 cable e To connect a port to equipment with standard unbalanced interface use the CBL RJ45 2BNC E1 X adapter cable which has one RJ 45 plug at one end and two BNC female plugs at the other end Connect the RJ 45 male connector of the adapter cable to the prescr
129. igured and provides a good clock signal Troubleshooting Hardware Problems In case a problem occurs check the displayed alarm messages and refer to the Gmux 2000 Installation and Operation Manual for their interpretation If after collecting all the relevant information the problem appears to be related to the operation of one of the VC E1 16 ports perform the actions listed below until the problem is corrected 1 Reset the VC E1 16 and then read the results of the power up test if a technical problem is reported replace the VC E1 16 2 If the power up test is successfully ended try to identify the type of port most likely to cause the problem A problem at a voice port affects only traffic carried by bundles serving that port A problem at a data port affects all the traffic passing through the port multiple voice ports VC E1 16 VC E1 12 GM 2000 Ver 3 2 Troubleshooting Instructions 4 21 Chapter 4 Troubleshooting and Diagnostics Installation and Operation Manual 3 If the equipment connected to a local VC E1 16 port reports loss of signal activate the remote loopback on the corresponding port If the problem disappears while the loopback is activated replace the VC E1 16 module 4 You can rapidly check the link from a local port to the port at the remote Gmux 2000 unit by activating the local port loopback at the local VC E1 16 port If the test fails there is a problem with the transmission through the netwo
130. ing This option is not available when using the super tandem mode Although voice is not compressed when using PCM ITU T Rec G 711 coders all the other signal processing functions and services are active moreover you can select a companding law differing from that of the local traffic to use towards the network Note When using ITU T Rec G 711 coders the total number of active El ports per VC E1 16 is maximum 8 With regular voice encoding methods much bandwidth is wasted during the normal periods of silence in a call it is often assumed that up to 60 of the call duration consists of quiet intervals Therefore to further reduce the actual bandwidth required for voice transmission the VC E1 16 modules support voice activity detection VAD with silence detection and suppression e When a silence interval is detected in a channel timeslot an indication is sent to the far end by means of special silence packets that require much less bandwidth than regular voice packets and the transmitting side releases most of the bandwidth normally occupied by the channel traffic In noisy environments in particular when other persons carry out conversations near the speaker the background may sometimes be interpreted as activity on the channel To improve silence detection under such conditions two VAD policies user selectable for each bundle are offered Standard internal VAD policy which complies with the standard sile
131. ing 1 55 TX Ring 1 7 TX Tip 2 23 TX Tip 2 4 nn 40 RX Ring 4 Le CHala 56 RX Ring 4 8 RX Tip 5 24 RX Tip 5 41 TX Ring 1 57 TX Ring 1 9 TX Tip 2 25 TX Tip 2 5 ve 42 RXRing 4 7 a 58 RXRing 4 10 RX Tip 5 26 RX Tip 5 43 TX Ring 1 59 TX Ring 1 11 TX Tip 2 27 TX Tip 2 6 SA 44 RXRing 4 14 CHala 60 RXRing 4 12 RX Tip 5 28 RX Tip 5 45 TX Ring 1 61 TX Ring 1 13 TX Tip 2 29 TX Tip 2 7 CH 7 15 CH 15 46 RX Ring 4 62 RX Ring 4 14 RX Tip 5 30 RX Tip 5 47 TX Ring 1 63 TX Ring 1 15 TX Tip 2 31 TX Tip 2 8 CH 8 16 CH 16 48 RX Ring 4 64 RX Ring 4 16 RX Tip 5 32 RX Tip 5 Adapter Cables CBL TELCO OPEN 2M CBL TELCO OPEN 10M The CBL TELCO OPEN 2M and CBL TELCO OPEN 10M cables are two similar cables differing only in length 2 meter 6 5 feet versus 10 meter 32 8 feet respectively The cables can be used to connect to the VC E1 16 voice ports irrespective of the selected interface type balanced or unbalanced VC E1 16 VC E1 12 GM 2000 Ver 3 2 Connecting Cables 2 9 Chapter 2 Installation and Operation 64 Pin TELCO Installation and Operation Manual The cable end connecting to the module is terminated in a 64 pin TELCO male connector and the other end is terminated in free leads that can be connected to any terminal block or any connector appropriate for your application Figure 7 6 shows the cable construction and 7ab e 2 6 presents the cable wiring and identifies the pair functions f
132. ing last 60 seconds Tx 60 sec Hdlc Number of HDLC packets transmitted during last 60 seconds Rx Silence Rate Average percentage of silence measured for the receive direction on all the timeslots connected to the bundle Tx Silence Rate Average percentage of silence measured for the transmit direction on all the timeslots connected to the bundle Freed Seq Num Total number of duplicate packets that were received and dropped the duplication occurs within the network Miss Seq Num Total number of packets that did not arrive in time as expected according to their sequence number either because they were lost in the network or reordered Longest Miss Seq 4 14 Performance Monitoring The largest interval of consecutively numbered missed packets VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics Interpreting Sequence Numbers Data In accordance with the applicable standards transmitted packets carry a sequence number that is automatically assigned The packet sequence number is a 16 bit field resulting range is O to 65535 Consecutive packets are automatically consecutive sequence numbers When the sequence number reaches the maximum value 65535 it is reset to O Sequence number statistic data can be used to trace problems in the network IP PDH or SDH connecting the VC E1 16 to other devices For this purpose the VC E1 16 module ana
133. ion At the receive side the data contained in packets carrying the transparent timeslots is directly converted to a data stream that is inserted in the corresponding timeslots without passing through the voice decompression subsystem This restores the original payload carried in the selected timeslots The user can specify the jitter buffer size used for the data carried by transparent timeslots in the range of 20 to 100 msec Since usually such timeslots carry data this permits to select the most appropriate jitter buffer while restricting the round trip delay to acceptable values Transparent timeslots can be included in each compressed voice bundle Note that the payload data rate for such timeslots is always equal to the timeslot rate 64 kbps The required bandwidth on the links is slightly higher than 64 kbps because of the packet overhead 1 26 Functional Description VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 1 Introduction Diagnostics To reduce downtime to a minimum the VC E1 16 module includes automatic self test upon power up and circuits that monitor the operation of the various module subsystems The self test results can be read by the Gmux 2000 management subsystem Each El port has alarm indicators that light in case of local or remote loss of frame synchronization or line signal In addition VC E1 16 supports a remote loopback on each E1 data port user activated local and remote
134. is detected by the DSP For this purpose each voice packet sent out of the DSP includes a time stamp the receiving DSP analyzes the time stamps on the received packets and adjusts the size of the jitter buffer according to the delay between the received packets Example When using G 723 1 compression the DSP expects to receive a packet every 30 msec If the delay between the received packets is higher than 30 msec the DSP will increase the size of the jitter buffer so that data will not be lost Q How does the VC E1 16 inform the local PBX that a bundle is out of service A When one of the VC E1 16 bundles is in the out of service state no response to the connectivity messages the VC E1 16 sends AIS to the local PBX In the CAS mode if the E1 stream is split over more than one bundle then the VC E1 16 generates an OOS pattern on the signaling bits of that bundle carried by the ABCD bits in timeslot 16 The OOS pattern is determined by the signaling profile being used on the corresponding E1 voice port of the VC E1 16 voice module Q When using the Q 50 feature how does VC E1 16 inform the switches PBXs on both sides to block new calls A Every second VC E1 16 checks the actual bandwidth utilization on the network connection When the specified Q 50 bandwidth utilization threshold is reached user configurable default 88 the VC E1 16 port inserts the appropriate block new calls signaling element in timeslot 16 in accord
135. isplaying Connection Performance Monitoring Data 4 12 Interpreting Sequence Numbers Data cceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaeeeeeeeaeaneees 4 15 4 3 VC E1 16 Diagnostic FUNCtIONS sise 4 16 Voice Port Diagnostic FUNCTIONS usines 4 16 Remote Loopback on Voice Port sis 4 16 Local Loopback on Voice Port sise 4 17 Test TOME INJ CHON cits iannc sees tuscatd ccatancaddtencestaneweceduedane lane anse tete een fat RA 4 19 Data Port Diagnostic FUNCTIONS iii 4 20 Remote Loopback on Data Port 4 20 4 4 Troubleshooting Instructions sise 4 21 Preliminary ACTIONS 0 ccceeeeeceee seca tect ee ceca eee ceca eee seca eee aaa e ee aeaa eee ee aaa eee senna eee eae 4 21 Troubleshooting Hardware Problems ss 4 21 Handling Service Probl ms 2e heavens interet tante en due 4 22 4 5 Frequently Asked Questions sise 4 22 4 6 Technical SUPPO wscasszicevsdaddidenineenceayaay cehayees aaa perte ann tendent aeaaea 4 28 Gmux 2000 VC 12 16 Ver GM 2000 Ver 3 2 iii Table of Contents Installation and Operation Manual iv Gmux 2000 VC 12 16 Ver GM 2000 Ver 3 2 Purpose Models Note Chapter 1 Introduction 1 1 Overview This manual describes the technical characteristics applications installation and operation of the VC E1 16 and VC E1 12 voice compression modules for the Gmux 2000 Pseudowire Gateway VC E1 16 and VC E1 12 modules enable Gmux 2000 to transport compressed E1 voice traffic including inband signaling
136. it output ring 28 El channel 14 receive input tip 60 El channel 14 receive input ring 29 El channel 15 transmit output tip 61 El channel 15 transmit output ring 30 El channel 15 receive input tip 62 El channel 15 receive input ring 31 El channel 16 transmit output tip 63 El channel 16 transmit output ring 32 El channel 16 receive input tip 64 El channel 16 receive input ring 2 6 Connecting Cables VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 2 Installation and Operation e Table 2 3 lists the pin functions for the 1 16 EL connector when using the unbalanced interface Table 2 3 1 16 El Connector Pin Functions Unbalanced Interface Pin Function Pin Function 1 El channel 1 transmit output center contact 33 El channel 1 transmit output ground 2 El channel 1 receive input center contact 34 El channel 1 receive input ground 3 El channel 2 transmit output center contact 35 El channel 2 transmit output ground 4 El channel 2 receive input center contact 36 El channel 2 receive input ground 5 El channel 3 transmit output center contact 37 El channel 3 transmit output ground 6 El channel 3 receive input center contact 38 El channel 3 receive input ground 7 El channel 4 transmit output center contact 39 El channel 4 transmit output ground
137. ition When connecting the DC supply wires first connect the ground wire to the corresponding terminal then the positive pole and last the negative pole Switch the circuit breaker back to the ON position A readily accessible disconnect device that is suitably rated and approved should be incorporated in the building installation If the DC power supply is floating the switch must disconnect both poles simultaneously Connecting Data and Telecommunications Cables Data and telecommunication interfaces are classified according to their safety status The following table lists the status of several standard interfaces If the status of a given port differs from the standard one a notice will be given in the manual Ports Safety Status V 11 V 28 V 35 V 36 RS 530 X 21 SELV Safety Extra Low Voltage 10 BaseT 100 BaseT Unbalanced E1 Ports which do not present a safety hazard Usually E2 E3 STM DS 2 DS 3 S Interface up to 30 VAC or 60 VDC ISDN Analog voice E amp M xDSL without feeding voltage TNV 1 Telecommunication Network Voltage 1 Balanced E1 T1 Sub E1 T1 Ports whose normal operating voltage is within the limits of SELV on which overvoltages from telecommunications networks are possible FXS Foreign Exchange Subscriber TNV 2 Telecommunication Network Voltage 2 Ports whose normal operating voltage exceeds the limits of SELV usually up to 120 VDC or telephone ringing voltages on which overvoltages f
138. le Routing Parameters section on page 3 20 this also assigns transmission bandwidth on the connection to the network for each bundle The data port timeslots used by a subchannel can be selected in two ways e Select individual timeslots on the corresponding VC E1 16 data port For the supervision terminal use Config gt Connection gt TS Assignment e When a subchannel will use the full bandwidth of a whole VC E1 16 data port the connection of the whole port to the subchannel can be initiated either from Config gt Connection gt TS Assignment or from the El data port physical parameters configuration screen Selecting Individual Timeslots When you select a specific VC E1 16 data port you are provided with a timeslot map that includes timeslots 1 to 31 To configure individual timeslot assignment 1 For each timeslot you need to select the subchannel Move the cursor under the timeslot in the Sub Channel row and then select Change Cell and type the prescribed subchannel number in the range of 1 to 10 0 means that no subchannel is connected to the timeslot 2 For each timeslot you need to select its type CONNECTED or NC not connected to the selected subchannel The selection is made on a list that appears under the table when the cursor is within the TS Type row Move the cursor under the timeslot and then select Change Cell to make the selection As an alternative you can first use the Assign Entire TSs to Port to preco
139. les gt Connecting Cables to External Voice Ports To connect using the CBL TELCO RJ45 16E1 adapter cable for equipment with balanced interfaces only l Connect the 64 pin connector of the CBL TELCO RJ45 16E1 adapter cable to the module voice port connector 1 16 El or 1 12 El Connect the grounding lug of the cable connector to the grounding screw on the module panel Route the cable through the cable guides provided in the rack to the required location Connect each RJ 45 plug marked CH 1 to CH 16 to the prescribed user s equipment or patch panel connector Insulate unused connectors to prevent accidental short circuiting of their exposed contacts to metallic surfaces gt To connect using an open cable balanced or unbalanced interfaces l Route the open cable CBL TELCO OPEN 2M or CBL TELCO OPEN 10M to the required location and then connect its free ends in accordance with the prescribed termination method Connect the 64 pin connector of the cable to the module voice port connector 1 16 El or 1 12 El Connect the grounding lug of the cable connector to the grounding screw on the module panel 2 Preparing VC E1 16 VC E1 12 for Operation VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Quick Start Guide Connecting Cables to External Data Ports gt To connect equipment with balanced interfaces to an external data port Use a standard RJ 45 RJ 45 cable gt To connect equip
140. ludes the following main components e 64 pin TELCO female connectors designated 1 16 El respectively 1 12 El for the external voice ports e 16 respectively 12 pairs of alarm indicators one pair for each voice port e Two RJ 45 connectors with built in alarm indicators designated LINK 1 and LINK 2 for the external data ports Physical Description VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 1 Introduction e Grounding screw for connecting the shield of the multipair cable that carries the voice ports e Two module status indicators 8 5 7 9 S 0000000000000000 O 2080 REV 2 4 6 8 10 12 14 16 VC E1 16 1 9 8 6 000000000000 LC 0000000 BAG TNT VC E1 12 B VC E1 12 Panel Figure 1 1 Typical Module Panels Indicator Functions Port Alarm Indicators Each module port either voice or data has two alarm indicators e LOC Lights when the input signal level is too low or the port loses frame synchronization including loss of synchronization in case AIS is received e REM Remote loss of signal indicator lights when the remote E1 port reports loss of synchronization Module Status Indicators The functions of the module status indicators are as follows ACT e Flashes during module initialization and during software downloading e Lights steadily after initialization is successfully completed if no fault is detected in the module FLT Lights when a malfunction ha
141. lyzes the sequence numbers of the packets received from the network The results of this analysis are presented by means of three parameters e Miss Seq Num parameter displays the total number of missing packets Only the total number of missing packets is relevant not which specific packets are missing If the network would have 100 reliability all the transmitted packets would reach their destination and this parameter would be 0 For example if the received packets are numbered 1 2 3 5 6 7 8 then packet 4 is missing and the missing packet counter is incremented by 1 e Longest Miss Seq displays the largest sequence of consecutive missing packets When this parameter reaches a large value it indicates that the network drops groups of packets in bursts For example if the received packets are numbered 39 41 42 43 44 45 46 heat the longest burst is 4 because 4 consecutive packets numbered 37 38 39 40 are missing e Freed Seq Num displays the number of duplicated packets that were received Packets with duplicate sequence numbers are dropped by the VC E1 16 receive path and therefore a large number of dropped or freed packets indicates a duplication problem in the network in packet networks this often happens when packets can reach their destination over more than one route For example if the received packets are numbered 6 7 8 9 6 6 10 11 then packet 6 was duplicated in the network appear
142. ment with unbalanced interfaces to an external data port l 2 Connect the RJ 45 male connector of the adapter cable CBL RJ45 2BNC E1 X to the prescribed module front panel LINK connector Connect coaxial cables to the prescribed user s equipment or patch panel connectors Connect the other end of each cable to one of the adapter cable BNC plugs Pay attention to correct connection The red connector is the transmit output of the link port The green connector is the receive input of the link port Configuring VC E1 16 VC E1 12 Modules Configuring Module Operating Mode If the module is not yet defined in the Gmux 2000 database use the Config gt System gt Card Type screen to select the module type The selected mode must match the operating mode selected by means of switch SW2 see 7ab e 1 Slots supporting VC E1 16 VC E1 12 modules 1 0 1 to 1 0 5 1 0 7 and 1 0 9 Configuring Module Global Parameters Configuring Signaling Profiles l 2 3 4 Use the Config gt Physical Layer 1 0 screen of the module Select Signaling Profile Config Select Profile Number to Configure 1 to 5 Select translation rule in ABCD BITS row A B C D Bit value sent to local voice port is copied from the corresponding bit received from the network side NOTA NOT B NOT C NOT D Bit value sent to local voice port is inverted relative to the value of the corresponding bit received from the network side Q0
143. modules use this guide to prepare a module for operation and configure its parameters 1 Preparing VC E1 16 VC E1 12 for Operation Selecting Module Operating Mode Before installing the module select its operating mode by means of switch SW2 See 7able 1 for a list of module operating modes Operating Mode Selector SW2 ON OFF M S3 Always OFF gt S2 Always OFF L EAN S1 User Ports Type ON _ OFF ER So nemor Pore oe one Lors VC E1 16 VC E1 12 GM 2000 Ver 3 2 Preparing VC E1 16 VC E1 12 for Operation 1 Quick Start Guide Installation and Operation Manual Table 1 Operating Modes Switch Card Designation User Side Voice Ports Network Side Data Ports Settings VC16E1_UE_NE External ports 1 16E1 or 1 12 El External data ports LINK 1 LINK 2 sa VC12E1_UE NE VC16E1_UE_NS External ports 1 16E1 or 1 121 Internal SDH ports 0 VC12E1_UE NS VC16E1_US_NE Internal SDH ports External data ports LINK 1 LINK 2 E VC12E1_US_NE Si VCI16E1 US NS Internal SDH ports Internal SDH ports VC12E1_US_NS Installing the Module Insert the module in the prescribed chassis slot 1 0 1 to 1 0 5 1 0 7 or 1 0 9 Connecting Cab
144. n the module 2 Set sections SO and S1 of SW2 to the positions corresponding to the desired type of ports use 7able 2 1 as reference Make sure to leave sections S2 and S3 at OFF Operating Mode Selector ON OFF m CE o CHAN S3 Always OFF LL S2 Always OFF Internal SDH External E1 S1 User Ports Type ON _ E OFF S0 Network Ports Type ON L E OFF JE Figure 2 1 Selecting Module Operating Mode 2 2 Installing the Module VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 2 Installation and Operation Table 2 1 Selecting VC E1 16 Operating Mode Switch Card Designation User Side Voice Ports Network Side Data Ports Settings Ca VC16E1_UE_NE External ports 1 16E1 or 1 12 E1 External data ports LINK 1 LINK 2 CE ma ni VC16E1_UE_NS External ports 1 16E1 or 1 12 E1 Internal SDH ports E EN VC16E1_US_NE Internal SDH ports External data ports LINK 1 LINK 2 cme EX VC16E1_US_NS Internal SDH ports Internal SDH ports B Installing a VC E1 16 Module gt To install a VC E1 16 module 1 Refer to the system installation plan and identify the prescribed module slot the module can be installed in any one of 1 0 slots 1 to 5 7
145. nal variants these should be performed externally Q What is a BPV error and what are the causes for such errors A A BPV bipolar polarity violation error event is a line coding violation For an AMI coded signal this is the occurrence of a pulse of the same polarity as the previous pulse For a B8ZS or HDB3 coded signal this is the occurrence of a pulse of the same polarity as the previous pulse without being a part of the zero substitution code Such errors occur under marginal transmission conditions which cause bit errors at the receiving side For framing modes with CRC 4 support Framed MF CRC and Framed CRC you will see BER alarms however when the framing mode does not support CRC 4 only line coding errors can be detected Q Can the bundle Voice Coder be changed remotely via Telnet Will downtime occur while implementing this change A Yes the bundle Voice Coder can be changed remotely via Telnet The bundle will be temporarily down until the change is completed at both ends The management traffic is not affected by this change Q Is it possible to use VC E1 16 over low quality TDM connections BER of 10 to 10 A VC E1 16 can use low quality TDM connections but service quality may be degraded The effect of marginal BER on the connection to a voice port is similar to the effect on other voice equipment The effect on marginal BER on the network connection is more severe because at th
146. nce detection methods RAD proprietary generic VAD policy which allows the user to select the detection threshold one for high background noise another for normal background or to cancel the VAD function altogether The last selection is not supported for uncompressed ITU T Rec G 711 voice because in this case the only way to improve bandwidth utilization efficiency is to use the VAD function e When decompressing the voice the far end usually fills the silence interval with noise having characteristics similar to normal background noise this capability is called comfort noise generation CNG This gives the far end subscriber the impression of a live line and therefore the subjective quality of the call is not noticeably affected The use of comfort noise generation is also a user selectable option The VAD function enables using less bandwidth to transmit the same amount of voice traffic without degrading the quality of the call e For VC E1 16 the resulting compression ratio may reach up to 16 1 which means that a single E1 trunk can carry the compressed voice of 16 uncompressed PCM trunks VC E1 16 VC E1 12 GM 2000 Ver 3 2 Functional Description 1 19 Chapter 1 Introduction Installation and Operation Manual e For VC E1 12 the same compression algorithms are used but the maximum compression ratio cannot exceed 12 1 because the module has only 12 voice ports To improve the perceived communication quality VC E1
147. nction the malfunctioning module is automatically replaced by the protection module thereby restoring the original traffic capacity The process used to replace a protected module by the protection module is as follows The Gmux 2000 control subsystem automatically downloads the configuration of the malfunctioning module to the protection module Therefore no configuration data should be prepared by the user for the protection module The Gmux 2000 control subsystem updates the internal traffic flow configuration within the chassis a At the telecom buses side the malfunctioning module is disconnected from the telecom buses and the protection module is connected in accordance with the downloaded configuration Therefore no change in SDH link mapping takes place a At the packet buses side the Fast Ethernet buses of the malfunctioning module are disconnected from the GbE module s and those of the protection module are connected in accordance with the downloaded configuration Therefore only the internal packet routing is affected no change is visible from outside the Gmux 2000 chassis The whole process may require up to 30 seconds after which service is completely restored e After the malfunctioning module is replaced and is again ready for service the reverse process automatically takes place with the result that the protected module is returned to service and the protection module is again idle and ready to protect a
148. nd uses the A companding law this companding law is commonly used in Europe and other countries using the E1 hierarchy G 711 u Law PCM coder complying with ITU T Rec G 711 operates at a data rate of 64 kbps and uses the u companding law this companding law is commonly used in North America and other countries using the T1 hierarchy Default G 723 1 6 4 Caller ID Type Selects the caller ID signaling protocol Bellcore Type 1 The caller ID is signalled using the Bellcore Type 1 protocol V 23 The caller ID is signalled using the V 23 protocol Default Bellcore Type 1 VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring Connections for Voice Ports 3 25 Chapter 3 Configuration Installation and Operation Manual Parameter Function Values Tx Delay for Specifies the time to wait from the start of the The available range is O to 3000 msec Caller ID set up process for a new call before sending the Default 400 msec caller ID information for that call Volume to Line Controls the gain of the receive audio path the The available selections are 6 to 6 dB path transmitting towards the local user s in 1 dB steps equipment for example a PBX or switch for this Default 0 dB bundle This function can be used to compensate for attenuation in the local audio path For example when a subscriber of the local PBX served by the bundle being configured is connected by a long line you can increase the gain to c
149. ndwidth available on two ports Packet Bus Interfacing Subsystem The packet bus interfacing subsystem includes an Ethernet switch that handles the traffic flow between the internal packet ports of the main processor and the Gmux 2000 packet buses en route to the GbE PSN interface module This traffic flow is configured by defining bundles terminated on GbE ports VC E1 16 VC E1 12 GM 2000 Ver 3 2 Functional Description 1 13 Chapter 1 Introduction Installation and Operation Manual The internal packet ports are connected to the chassis packet buses via two Fast Ethernet transceivers Support for N 1 Protection VC E1 16 and VC E1 12 modules operating in the internal ports US_NS mode see VC E1 16 Operating Modes section on page J 16 support the N 1 protection mode one of the Gmux 2000 APS functions The N 1 protection function is managed by the Gmux 2000 control subsystem and operates independently of the other Gmux 2000 APS capabilities An N 1 protection group is formed by adding a spare standby or protection module to a group of N modules that carry the traffic the protected modules All the N 1 modules must be of the same type that is either VC E1 16 or VC E1 12 N 1 protection for VC E1 16 modules operates as follows e When all of the N traffic carrying protected VC E1 16 or VC E1 12 modules operate normally the protection VC E1 16 module is idle e When any one of the N traffic carrying modules reports a malfu
150. nfigure the timeslots and their types and then modify only the different timeslots Assigning all the Port Timeslots to a Subchannel You can select all the timeslots of a VC E1 16 data port to one subchannel in one step using Assign Entire TSs to Port on the Config gt Connection gt TS Assignment screen or on the corresponding Config gt Physical Layer gt I O gt E1 Port Data screen After this step you can modify the configuration of any desired timeslots as explained in the Se ecting Individual Timeslots section above 3 36 Configuring VC E1 16 Port Timeslot Assignment VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration gt To assign all the port timeslots 1 Select Connect Entire Time Slots to Port to display the configuration screen 2 Select Sub Channel Number and enter the prescribed number 3 Confirm the connection by selecting Connect Entire Time Slots to Bundle Disconnecting a Subchannel from a Port You can disconnect all the timeslots of a VC E1 16 data port that are connected to a specific subchannel in one step using the procedure described above but with one difference in Step 5 instead of selecting Connect Entire Time Slots to Port select Disconnect Entire Time Slots from Port 3 10 Configuring Inband Management via VC E1 16 Data Ports VC E1 16 installed in a Gmux 2000 support the transfer of inband management traffic via their data ports Therefore a remotely loc
151. nfigure the physical port parameters for ports 3 and 4 which serve as secondary ports This completes the configuration When you will select the backup port for configuration its function Secondary is indicated by the Backup Port Type field and the number of the other port of the pair the Primary port is indicated by a Backup Port field When configuring the backup port parameters make sure to select parameters compatible with those of the associated primary port 3 7 Configuring Parameters Related to SDH Transport As listed in 7able 3 1 VC E1 16 ports can be connected to SDH ports In this case it is necessary to configure the parameters related to SDH transport This includes two tasks e Configuration of VC 12 path parameters for each VC E1 16 port connected to the SDH network e Configure the mapping of the VC 12s carrying the VC E1 16 traffic on the prescribed STM1 module port s VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring Parameters Related to SDH Transport 3 15 Chapter 3 Configuration Installation and Operation Manual Configuring VC 12 Path Parameters gt To configure the VC 12 path parameters 1 On the Config gt Physical Layer gt 1 0 screen of the VC E1 16 module select VC12 Channel 2 Select Channel ID and then enter the number of the desired port The depends on the operating mode that is the type of ports connected to the SDH network as listed in 7able 3 4 3 Configure the VC 12 path par
152. nfigured before starting bundle configuration activities for the supervision terminal the CONTROL module IP address is configured using Contiguration System gt Host IP Delete all the bundles currently configured for VC E1 16 voice ports or disconnect all the bundles from VC E1 16 voice ports without deleting their configuration data For the supervision terminal use Config gt Physical Layer gt 1 O 7 Configure timeslot assignment for the voice and data ports Configure timeslot assignment for each bundle associated with VC E1 16 El voice ports For the supervision terminal use Config gt TS Assignment When a bundle will carry the traffic of a whole El voice port the connection of the port to the bundle can also be made as a part of the El voice port configuration Configure timeslot assignment for El data port subchannels For the supervision terminal use Config gt Connection gt TS Assignment When the data port operates in the unframed mode the selection of a subchannel and its connection to the port payload are made as a part of the El data port configuration 8 When necessary configure Gmux 2000 for management via VC E1 16 data ports Vmux 2100 Voice Trunking Gateways can also be managed in this way 3 2 Configuration Sequence VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration 9 When applicable configure N 1 protection for VC E1 16 or VC E1 12 modules For th
153. ng of this product as unsorted municipal waste at the end of its life cycle Upon termination of the unit s use customers should provide for its collection for reuse recycling or other form of environmentally conscientious disposal General Safety Instructions The following instructions serve as a general guide for the safe installation and operation of telecommunications products Additional instructions if applicable are included inside the manual Safety Symbols This symbol may appear on the equipment or in the text It indicates potential safety hazards regarding product operation or maintenance to operator or service personnel gt Warning Danger of electric shock Avoid any contact with the marked surface while the product is energized or connected to outdoor telecommunication lines Protective ground the marked lug or terminal should be connected to the building protective ground bus gt Some products may be equipped with a laser diode In such cases a label with the laser class and other warnings as applicable will be attached near the optical transmitter The laser warning symbol may be also attached Warning Please observe the following precautions e Before turning on the equipment make sure that the fiber optic cable is intact and is connected to the transmitter e Do not attempt to adjust the laser drive current e Do not use broken or unterminated fiber optic cables connectors or look straight at
154. nnection Configuration gt Routing Parameters Parameter Values Parameter Values Exit Port Slot Port where VC E1 16 data port Slot 1 to 5 7 9 Port 17 or 18 GbE module port Destination IP Valid IP in dotted quad notation Slot 6 or 8 Port 1 or 2 Next Hop Valid IP in dotted quad notation Exit Channel 1 to 10 Source CBID UDP IP 1 to 8063 TOS 00 to FF MPLS ETH 1 to 8063 Dest CBID UDP IP 1 to 8063 MPLS ETH 1 to 8063 VLAN Parameters VLAN Tagging DISABLE ENABLE For ENABLE VLAN ID 1 to 4094 VLAN Priority 7 to O Configuring General Bundle Parameters 1 Configure bundle packetizing parameters Parameter Values Max Bytes in Multiplexed Frame 100 to 1461 Transparent Jitter Size N 10 msec where N 2 to 10 20 to 100 msec Packetizing Interval 10 to 90 2 Configure Connectivity Parameters Parameter Values Connectivity Packet Rate Sec 1 to 60 Connectivity Timeout Cycles 2to5 VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring VC E1 16 VC E1 12 Modules 7 Quick Start Guide Installation and Operation Manual Configuring Bundle Voice Parameters Use Config gt Connection gt Connection Configuration gt Voice Parameters Parameter Values Parameter Values Coder Rate kbps G 723 1 6 4 Custom Tone Detection See below G 723 1 5 3 G 729A 8 Only for Super Tandem DISABLE G 711 A law G 711 u law Caller ID Type Bellcore Type 1 Super Tand
155. nput center contact 56 El channel 12 receive input ground 25 El channel 13 transmit output center contact 57 El channel 13 transmit output ground 26 El channel 13 receive input center contact 58 El channel 13 receive input ground 27 El channel 14 transmit output center contact 59 El channel 14 transmit output ground 28 El channel 14 receive input center contact 60 El channel 14 receive input ground 29 El channel 15 transmit output center contact 61 El channel 15 transmit output ground 30 El channel 15 receive input center contact 62 El channel 15 receive input ground 31 El channel 16 transmit output center contact 63 El channel 16 transmit output ground 32 El channel 16 receive input center contact 64 El channel 16 receive input ground The 1 12 El connector has similar pin functions except that only the first 12 channels are connected RAD offers as optional accessories the following dedicated adapter cables e CBL TELCO RJ45 16E1 terminated in 16 RJ 45 connectors is used to connect equipment with standard RJ 45 connectors to the 1 16 El and 1 12 El connectors This cable is intended for connection to equipment with balanced interfaces e CBL TELCO OPEN 2M and CBL TELCO OPEN 10M cables terminated in free leads that can be connected to any terminal block or to any connector appropriate for your application These cables can be used for connection to both balanced and unbalanced interfaces
156. ns that no VLAN ID has been When VLAN tagging is disabled this specified parameter is not displayed Default 0 When you select the VLAN ID for bundles that exit via a G E module port make sure that the same VLAN ID is used for all the bundles having the same destination IP address the GbE module supports only one VLAN per IP address e VLAN Priority when VLAN tagging is The allowed range in accordance with IEEE enabled specifies the priority assigned to 802 3p is 7 highest priority to O lowest the bundle traffic using the selected priority VLAN Default O When VLAN tagging is disabled this parameter is not displayed Configuring General Bundle Parameters gt To configure the bundle packetizing parameters 1 On the Connection Configuration screen select each of the parameters listed in 7able 3 6 and then select the prescribed values For configuration guidelines and considerations refer to Chapter 1 Table 3 6 General Bundle Parameters Packetizing Parameters Parameter Function Values Max Bytes in Specifies the total number of bytes including The available selections are 100 to 1461 Multiplexed all the header information to be inserted in Default 1400 Frame each packet sent to the network A larger value increases the bandwidth utilization efficiency but also increases the connection intrinsic latency in particular when the bundle is configured by means of of the TS Assignment submenu to carry a small number of
157. nstructions Note Before starting refer to the site installation plan to determine the cables intended for connection to this VC E1 16 module Skip the instructions referring to unneeded connections Connecting User s Voice Equipment to the External Voice Ports Skip this section if the module is configured to use SDH ports for connecting to the user s voice equipment The connections to the El user s voice ports of the VC E1 16 and VC E1 12 modules are made to the 64 pin connector marked 1 16 E1 respectively 1 12 E1 To connect using the CBL TELCO RJ45 16E1 adapter cable balanced interfaces only 1 Connect the 64 pin connector of the CBL TELCO RJ45 16E1 cable to the module 1 16 El or 1 12 El connector 2 Connect the grounding lug of the cable connector to the grounding screw on the VC E1 16 or VC E1 12 module panel 3 Route the cable through the cable guides provided in the rack to the required location for example to an RJ 45 patch panel serving the equipment to be connected to the module VC E1 16 VC E1 12 GM 2000 Ver 3 2 Connecting Cables 2 11 Chapter 2 Installation and Operation Installation and Operation Manual Note Note f the Gmux 2000 Is installed in an ETSI rack it is recommended to route the cable through the Gmux 2000 rack mounting brackets Make sure to avoid stressing any optical fibers passing through these openings 4 Connect each RJ 45 plug the plugs are marked CH 1 to CH 16 to the prescr
158. ny other malfunctioning module in the group 1 14 Functional Description VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 1 Introduction Gmux 2000 supports a single N 1 protection group per chassis e For a Gmux 2000 equipped with a single STM1 module the maximum number of VC E1 16 or VC E1 12 modules that can be protected in this way is 5 with the 6 module serving as the protection module e For a Gmux 2000 equipped with two STM1 modules the maximum number of VC E1 16 or VC E1 12 modules that can be protected in this way is 4 with the 5 module serving as protection module To provide differential quality of service it is possible to define two protection priority levels low and high in the event that protection is required for two modules at the same time only the high priority module will be protected The need for protection switching flipping is evaluated in accordance with the following criteria arranged below in decreasing order of severity 1 Module removed from chassis 2 Hardware failure 3 User s flip command a diagnostic function for APS groups 4 Priority flip 5 Link failure Therefore when more than one module need protection at the same time the protection will be activated only for the module with the more severe criteria while still observing the user defined protection priorities Therefore separate severity evaluations are made for each protection priority to sel
159. o carry headers data VC E1 16 supports two additional RAD proprietary bandwidth efficient encapsulation methods identified as TDMolP and AAL20MPLS The actual number of packets generated depends on the voice activity and may vary widely over short intervals although over the long term the average number changes much less Despite the statistical variations it is necessary to make preliminary evaluations of the bandwidth needed to carry the expected traffic RAD offers a dedicated Bandwidth Calculator which can be used to predict the required bandwidth taking into consideration the following main parameters e Packet size e Selected coder e Silence percentage With time the bandwidth utilization statistics can be analyzed and the assigned bandwidth be modified to better match actual traffic For this purpose VC E1 16 automatically collects performance statistics and stores the data in a file STAT DAT that can be sent by TFTP to a RADview SC Vmux Service Center Preventing Excessive Bandwidth Consumption The bandwidth needed to transport compressed voice is not constant but varies in accordance with the actual amount of intelligence transmitted in each timeslot at each instant For example for voice calls the required bandwidth decreases during silence intervals and increases while users talk in modem or fax calls the bandwidth is relatively constant for long intervals To safely use as much bandwidth on the network conn
160. ofile modifies the signaling information in the direction from the network to the PBX local user side Each VC E1 16 voice port can use a different signaling profile The total number of different signaling profiles that can be defined for each VC E1 16 is up to five The definition of signaling profiles is performed by means of the Signaling Profile Config item on the Config gt Physical Layer gt I O screen of the VC E1 16 module The signaling profile itself is specified by means of a table with four columns one for each signaling bit identified as A BIT to D BIT and three rows e ABCD BITS specifies the translation rules for the individual bits e IDLE SIGNAL specifies the code used for idle timeslots e OOS SIGNAL specifies the code used to indicate an out of service condition To define a signaling profile 1 On the Config gt Physical Layer gt I O screen of the VC E1 16 module select Signaling Profile Config 2 On the Signaling Profile Config screen select Profile Number to Configure and then type the desired number 1 to 5 You can also select the number of an existing profile to modify it 3 Now select Signaling Table Config to display the profile configuration table for the corresponding signaling profile The selected Profile Number is displayed in the screen header 4 To specify the translation rules for the signaling bits received from the network select the bit values in the ABCD BITS row For each bit y
161. ofiles that can be defined for each VC E1 16 is up to 5 In addition to signaling translation each profile also enables defining the signaling code to be sent to the local user PBX to indicate idle timeslots and the code sent to indicate the out of service state that is a timeslot that cannot carry traffic for example as a result of a test or maintenance activity CCS Handling Common channel signaling CCS uses dedicated timeslots within the EL structure to carry serial data channels for exchanging signaling information between the local and far end CCS can be used when an E1 voice port uses the basic G 704 framing mode With CCS it is usually necessary to transfer the signaling information transparently through the link in parallel with the voice payload and let the end users equipment interpret the signaling This transfer uses an optimized HDLC protocol which is transparent to the endpoints For one widely used protocol Signaling Scheme 7 SS7 it is possible to increase bandwidth utilization efficiency because SS7 uses two specific types of protocol signal units messages that do not carry signaling information e Link status signal units LSSUs used to exchange information regarding the status of the SS7 signaling link between two endpoints After a signaling link VC E1 16 VC E1 12 GM 2000 Ver 3 2 Functional Description 1 23 Chapter 1 Introduction Installation and Operation Manual is successfully set up bet
162. ompensate for the expected audio line attenuation and thus improve the perceived voice quality For example e If the expected line attenuation is 2 dB and the PBX nominal input level is O dBm increase the gain by selecting 2dB for Volume to Line e When singing occurs decrease the gain You can also adjust the receive gain to compensate for level differences in the path from the far end equipment to the local equipment for example if the far end signal is too weak you can add gain at the output However the recommended approach to correct such problems is to adjust the far end Volume from Line parameter see below s See Figure 3 1 below for a description of the way VC E1 16 interprets the Volume to Line and Volume from Line parameters VC E1 16 Processing Channel Input Level Transmit Nominal Input Level Input Circuit User s Adjust Volume from Line 2 Equipment to 6dB igna Processor Output Level Receive Nominal Output Level Output Circuit Adjust Volume to Line to 2dB Figure 3 1 Selection of Volume to Line and Volume from Line Parameters 3 26 Configuring Connections for Voice Ports VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration Parameter Function Values Volume from Controls the nominal input level of the transmit The available selections are 12 dB 6 to Line path the path receiving signals from the local 6 dB in 1 dB steps and 12 dB e
163. on Manual e GbE links located on GbE modules In addition to voice traffic VC E1 16 can also transparently transfer selected timeslots VC E1 16 supports the ITU T Rec G 723 1 and G 729 Annex A voice compression algorithms as well as ITU T Rec G 711 A law and u law PCM and uses TDMoIP multiplexing for efficiently transporting the payload of E1 trunks over TDM E1 or SDH networks Packet structure is selectable TDMoIP for UDP IP networks and AAL20MPLS for MPLS networks In addition to standard packet structures VC E1 16 also offers RAD proprietary versions of these protocols that achieve significantly higher bandwidth efficiency Advanced digital signal processing techniques ensure highly reliable service unaffected by the use of voice compression These techniques include e Per channel voice activity detection VAD and silence suppression e Built in echo cancellation for delays up to 32 msec per ITU T Rec G 168 e Relaying of Group Ill fax modems at commonly used rates and standards inband signaling and custom tones e Where compression cannot be used for example for non standard inband signaling and modem protocols voiceband signals can be faithfully transmitted using selectable PCM or ADPCM coders To prevent voice degradation when traffic passes multiple VC E1 16 or Vmux units a special super tandem mode ensures that voice signals pass compression only once irrespective of the number of hops on the transmission
164. ontact White RX Tip RX Center Contact Yellow gt TX Ring TX Ground Brown Blue a TX Ring TX Ground Grey TX Tip TX Center Contact White TX Tip TX Center Contact Yellow RX Ring RX Ground Orange Green RX Ring RX Ground Green Blue A RX Tip RX Center Contact White tz RX Tip RX Center Contact Yellow TX Ring TX Ground White Orange TX Ring TX Ground Orange Blue TX Tip TX Center Contact White TX Tip TX Center Contact Yellow RX Ring RX Ground Grey Orange RX Ring RX Ground Orange Green RX Tip RX Center Contact White RX Tip RX Center Contact Yellow 7 TX Ring TX Ground Orange Brown ie TX Ring TX Ground Brown Blue TX Tip TX Center Contact White TX Tip TX Center Contact Yellow RX Ring RX Ground Green Brown RX Ring RX Ground Grey Blue RX Tip RX Center Contact White 16 RX Tip RX Center Contact Yellow TX Ring TX Ground White Green TX Ring TX Ground White Orange TX Tip TX Center Contact White TX Tip TX Center Contact Yellow 2 10 Connecting Cables VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 2 Installation and Operation Adapter Cable CBL RJ45 2BNC E1 X The 15 cm long adapter cable CBL RJ45 2BNC E1 X has one RJ 45 plug for connection to the RJ 45 connector and two BNC female connectors at the other end Cable wiring is given in Figure 2 7 Receive Green BNC Female Transmit Red Receive Green BNC Transmit Red BNC Figure 2 7 Adapter Cable CBL R 45 2BNC E1 X Wiring Diagram Connection I
165. or both balanced and unbalanced interfaces Re Connector Cable Shield Lug Figure 2 6 CBL TELCO OPEN 2M CBL TELCO OPEN 10M Cables Table 2 6 CBL TELCO OPEN 2M Cable Wiring Function Function Channel Pair Color Channel Pair Color Balanced Unbalanced Balanced Unbalanced RX Ring RX Ground Orange RX Ring RX Ground White Brown RX Tip RX Center Contact White RX Tip RX Center Contact White 1 TX Ring TX Ground Blue gt TX Ring TX Ground Grey Green TX Tip TX Center Contact White TX Tip TX Center Contact White RX Ring RX Ground Brown RX Ring RX Ground White Grey 5 RX Tip RX Center Contact White 10 RX Tip RX Center Contact White TX Ring TX Ground Green TX Ring TX Ground Grey Brown TX Tip TX Center Contact White TX Tip TX Center Contact White RX Ring RX Ground White Blue RX Ring RX Ground Orange RX Tip RX Center Contact White RX Tip RX Center Contact Yellow 3 TX Ring TX Ground Grey i TX Ring TX Ground Blue TX Tip TX Center Contact White TX Tip TX Center Contact Yellow RX Ring RX Ground Green Blue RX Ring RX Ground Brown RX Tip RX Center Contact White b RX Tip RX Center Contact Yellow TX Ring TX Ground Orange Blue TX Ring TX Ground Green TX Tip TX Center Contact White TX Tip TX Center Contact Yellow RX Ring RX Ground Grey Blue RX Ring RX Ground White Blue RX Tip RX Center C
166. orts The collected data enables the system administrator to monitor the transmission performance and thus the quality of service provided to users for statistical purposes In addition when problems are reported by users served by VC E1 16 the collected data can be used for diagnostic purposes because it can help identify the source of the problem For TDM ports the basic performance data is calculated for each second and accumulated and displayed over a 15 minute 900 second interval The data accumulated for each interval up to a maximum of 96 previous intervals that is VC E1 16 VC E1 12 GM 2000 Ver 3 2 Performance Monitoring 4 1 Chapter 4 Troubleshooting and Diagnostics Installation and Operation Manual over the last 24 hour interval is stored and can also be displayed The oldest interval is 1 and the most recent one is the interval with the largest number Only the data for the most recent 96 intervals is stored and therefore the oldest data is overwritten by new data The performance statistics and status data is continuously collected and is stored as long as the equipment operates The performance statistics cannot be erased but status data can be cleared by manual commands The stored data is deleted when the VC E1 16 is reset or removed and is also lost when the Gmux 2000 is powered down Accessing the Performance Monitoring Functions When using the Gmux 2000 supervision utility the performance monitoring f
167. ot in permanent use such as cables used for one time configuration The compliance of the equipment with the regulations for conducted emission on the data lines is dependent on the cable quality The emission is tested for UTP with 80 dB longitudinal conversion loss LCL Unless otherwise specified or described in the manual TNV 1 and TNV 3 ports provide secondary protection against surges on the data lines Primary protectors should be provided in the building installation The equipment is designed to provide adequate protection against electro static discharge ESD However it is good working practice to use caution when connecting cables terminated with plastic connectors without a grounded metal hood such as flat cables to sensitive data lines Before connecting such cables discharge yourself by touching ground or wear an ESD preventive wrist strap FCC 15 User Information This equipment has been tested and found to comply with the limits of the Class A digital device pursuant to Part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the Installation and Operation manual may cause harmful interference to the radio communications Operation of this equipment in a residential area is likely to caus
168. ot with the same number 5 Select From Ts and specify the first timeslot in the group to be assigned Make sure to select a number that allows to include in the bundle the required number of timeslots as defined by means of Num of TS for example if the port uses FRAMED MF or FRAMED MF CRC framing and you want to connect to the bundle 20 timeslots the highest timeslot number that can be selected is 10 considering that timeslot 16 is assigned to CAS signaling 6 Select Num of TS and enter the number of timeslots to be connected to the selected bundle 7 Confirm the connection by selecting Connect the TS Range to Bundle Assigning a Whole Port to a Bundle You can select all the timeslots of a VC E1 16 voice port to one bundle in one step using Assign Entire Port to Bundle on the Config gt Connection gt TS Assignment screen or on the corresponding Config gt Physical Layer gt I O gt E1 Port Voice screen After this step you can modify the configuration of any desired timeslots as explained in the Se ecting Individual Timeslots section above To assign all the port timeslots 1 Select Assign Entire Port to Bundle to display the configuration screen 2 Select Bundle Number and enter the prescribed bundle number 3 Select TS Type and specify the type assigned to all the port timeslots 4 Select Dest Port and enter the prescribed far end port number Each local timeslot is automatically connected to the far end timeslot wi
169. ou can select one of the following options A B C D Bit value sent to the local user PBX is copied from the corresponding bit received from the network NOTA NOT B NOT C NOT D Bit value sent to the local user PBX is inverted relative to the value of the corresponding bit received from the network 0 Bit value sent to the local user PBX is always O VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring VC E1 16 Global Parameters 3 5 Chapter 3 Configuration Installation and Operation Manual 1 Bit value sent to the local user PBX is always 1 To select a bit value move the cursor to the corresponding BIT position and then select the number corresponding to the desired translation 5 To specify the code sent to the local PBX to indicate idle timeslots select the bit values in the IDLE SIGNAL row 6 To specify the code sent to the local PBX to indicate the out of service state that is a timeslot that cannot carry traffic for example as a result of a test or maintenance activity select the bit values in the OOS SIGNAL row Bandwidth Management Control over Maximum Bandwidth Requirements The bandwidth needed to transport compressed voice is not constant but varies in accordance with the actual amount of intelligence transmitted in each timeslot at each instant For example for voice calls the required bandwidth decreases during silence intervals and increases while users talk in modem or fax calls t
170. path At the highest compression ratio VC E1 16 enables compressing up to 16 E1 voice trunks for transport over a single El network link up to 16 1 compression ratio for VC E1 12 the maximum compression ratio cannot exceed 12 1 because it has only 12 voice ports VC E1 16 and VC E1 12 traffic can be routed over up to 32 independently configurable bundles where a bundle can carry any number of timeslots up to a full El voice port 30 or 31 channels Each compressed voice bundle can be independently connected to any desired network side port either TDM port or GbE port Moreover VC E1 16 and VC E1 12 support both point to point and point to multipoint channelized applications over their E1 network side links with user configurable link bandwidth assignment per destination the timeslots available on each E1 network side link can be assigned to up to 10 independent subchannels To guarantee high service quality together with highly efficient utilization of transport links VC E1 16 and VC E1 12 support the ITU T Rec Q 50 Annex A and B bandwidth control protocol as well as a proprietary bandwidth limiting algorithm that ensures quality degrades gradually during intervals of excessive traffic load To preserve service quality a separate mechanism makes it possible to block the setup of new modem calls when bandwidth utilization exceeds user configurable application specific thresholds VC E1 16 and VC E1 12 provide full support for
171. plied The reverse process is carried out at the remote end and the resulting regenerated audio signal is then transmitted in digital format PCM to the remote TDM equipment connected to the VC E1 16 PBX switch The output signal is a very good replica of the original input signal but it is not represented by exactly the same PCM bytes hence the resulting output bit stream differs from the original input data As a result of the above it is not possible to perform BER test on an El stream that is compressed by VC E1 16 Q How can enable VC E1 16 to support R2 MFC A Perform the following steps to enable VC E1 16 to support R2 MFC 1 R2 MFC is a CAS protocol and therefore the El framing mode must be configured as Framed MF If the PBX uses CRC Framed MF CRC4 should be used 2 The VC E1 16 DSP supports MFC relaying and therefore at the other end of the link the MFC tones are regenerated by the DSP By default the MFC relay is disabled Therefore when the VC E1 16 must support MFC tones enable MFRC relaying and configure the required parameters mainly Minimum Pulse Width and Minimum Power Level Proper selection of these parameters prevents false detection of MFC tones these tones appear within speech for short intervals The result of this false detection is that the remote party will occasionally hear short MFC tones In order to minimize the false detection of MFC tones these two parameters are used to fine tun
172. quipment for example a PBX for this bundle Default odB This function is used to compensate for attenuation in the local audio path or for differences in the nominal levels of the equipment The purpose is to ensure that the VC E1 16 DSP processing the signal of this bundle handles a signal at its optimum nominal level and thus can provide the best perceived voice quality For example e When the audio signal received from the local PBX in a timeslot served by the bundle being configured is too low for example 6B below the nominal level select 6B for the Volume from Line parameter to increase the input gain and thus compensate for the lower input signal e When the nominal level of the audio signal received from the local PBX is 3 dBm increase the Volume from Line parameter to 3 dB Fax Modem Used to control the fax and modem processing parameters for this bundle These parameters are selected on a separate screen that opens when you select Fax Modem Modem ENABLE Modem signal identification is Enables disables modem signal identification for enabled this bundle DISABLE Modem signal identification is disabled Default DISABLE VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring Connections for Voice Ports 3 27 Chapter 3 Configuration Parameter Fax Modem cont Function Modem Op Mode Determines the modem signal processing method This parameter is displayed only when Modem is ENABLE
173. r 2 Installation and Operation 2 3 Connecting Cables Installation and Operation Manual This section provides information regarding connections to the external voice and data ports of the VC E1 16 module You may skip this section if the module is connected only to the SDH network Connector Data Voice Port Connector The external El voice ports of the VC E1 16 and VC E1 12 modules have ITU T Rec G 703 interfaces terminated in one 64 pin D type female connector designated 1 16 E1 respectively 1 12 E1 The interface type balanced or unbalanced is user selectable e Table 2 2 lists the pin functions for the 1 16 E1 connector when using the balanced interface Table 2 2 1 16 EI Connector Pin Functions Balanced Interface Pin Function Pin Function 1 E1 channel 1 transmit output tip 33 El channel 1 transmit output ring 2 El channel 1 receive input tip 34 El channel 1 receive input ring 3 E1 channel 2 transmit output tip 35 El channel 2 transmit output ring 4 E1 channel 2 receive input tip 36 El channel 2 receive input ring 5 E1 channel 3 transmit output tip 37 El channel 3 transmit output ring 6 E1 channel 3 receive input tip 38 El channel 3 receive input ring 7 E1 channel 4 transmit output tip 39 El channel 4 transmit output ring 8 E1 channel 4 receive input tip 40 El channel 4 receive input
174. rames and shorter packetization intervals will result in lower delay but on the other hand will reduce throughput Can double compression be prevented when passing through more than one compressed voice hop When voice travels through several VC E1 16 and Vmux 2100 gateways the intermediate units sense that the voice data has already been compressed and do not uncompress and recompress the data as it moves through the phone network This ensures that voice is only compressed once at the originating VC E1 16 or Vmux 2100 gateway and decompressed once at the terminating VC E1 16 or Vmux 2100 gateway resulting in the same quality as one hop How is this done The VC E1 16 continuously transmits a very low frequency signal 38 Hz that enables any other VC E1 16 or Vmux 2100 receiving this information to detect that it is coming from another VC E1 16 or Vmux 2100 This 38 Hz tone cannot pass through analog telephony equipment which is usually limited to 300 to 3400 Hz but it does pass through digital PBXs as long as there are no digital to analog conversions in between Once VC E1 16 or Vmux 2100 units detect each other they both enter the Super Tandem mode and immediately stop compressing decompressing on this segment For this mechanism to work make sure to enable the Super Tandem mode for the relevant bundles What is the difference between HDLC and SS7 timeslot types The SS7 traffic type was added to the existing HDLC type
175. rk or with the VC E1 16 module Repeat the test after carefully checking all the configuration parameters of the module and its ports If the problem persists replace the module and check again Handling Service Problems The main tool used to analyze unsatisfactory service or service degradation is to use the performance statistics and status data collection tools provided by the Gmux 2000 These tools are supplemented by an extensive set of dedicated performance monitoring functions for the VC E1 16 Section 4 2 presents a detailed description of the VC E1 16 performance monitoring functions explains the various parameters and provides guidelines for interpreting the displayed data By analyzing the performance statistics and status data it is possible to identify the unsatisfactory performance area and take steps to change the system configuration and enhance resources such a network bandwidth etc as required to improve the service quality It is also recommended to check Section 4 5 for answers to frequently asked questions Contact RAD Technical Support Department if you need additional help with your particular application 4 5 Frequently Asked Questions Q AVC E1 16 El port either voice or data reports remote loss of synchronization What could be the possible causes of this condition A Possible causes for a remote loss of synchronization alarm on a local E1 port Incorrect cabling or bad physical connections caus
176. rocedure described in Step 1 above to make a selection Assigning a Group of Timeslots to a Bundle You can select a range of timeslots i e a group of consecutive timeslots of a VC E1 16 voice port to one bundle in one step using Assign TS Range to Bundle on the Config gt Connection gt TS Assignment screen After this step you can modify the configuration of any desired timeslots as explained in the Se ecting Individual Timeslots section above gt To assign a range of timeslots to a bundle 1 Select Assign TS Range to Bundle to display the configuration screen 2 Select Bundle Number and enter the prescribed bundle number in the range of 1 to 2000 O means that the timeslot is not yet connected to a bundle Note The required bundles must be defined before starting timeslot assignment 3 Select TS Type and specify the type assigned to all the timeslots in the specified range as explained in the Se ecting Individual Timeslots section above 4 When operating in a link with the Vmux Voice Trunking Gateway you need to specify the destination port and the port timeslot at the Vmux This is made by selecting Dest Port row and entering the prescribed Vmux port number 3 34 Configuring VC E1 16 Port Timeslot Assignment VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration Note Note Each local timeslot assigned to the selected bundle is automatically connected to the far end timesl
177. rom telecommunication networks are not possible These ports are not permitted to be directly connected to external telephone and data lines FXO Foreign Exchange Office xDSL TNV 3 Telecommunication Network Voltage 3 with feeding voltage U Interface Ports whose normal operating voltage exceeds the ISDN limits of SELV usually up to 120 VDC or telephone ringing voltages on which overvoltages from telecommunication networks are possible Always connect a given port to a port of the same safety status If in doubt seek the assistance of a qualified safety engineer Always make sure that the equipment is grounded before connecting telecommunication cables Do not disconnect the ground connection before disconnecting all telecommunications cables Some SELV and non SELV circuits use the same connectors Use caution when connecting cables Extra caution should be exercised during thunderstorms When using shielded or coaxial cables verify that there is a good ground connection at both ends The grounding and bonding of the ground connections should comply with the local codes The telecommunication wiring in the building may be damaged or present a fire hazard in case of contact between exposed external wires and the AC power lines In order to reduce the risk there are restrictions on the diameter of wires in the telecom cables between the equipment and the mating connectors Caution To reduce the risk of fire use only No 26 A
178. rotocol as well This parameter is relevant only when the port Line Type is FRAMED MF or FRAMED MF CRC DISABLE The use of the ITU T Rec Q 50 protocol is disabled ANNEX A The port uses Annex A of ITU T Rec Q 50 ANNEX B The port uses Annex B of ITU T Rec Q 50 Default DISABLE Q 50 Bits Pair When the use of ITU T Rec Q 50 per Annex A is enabled selects the pair of bits that carry signaling information This parameter is displayed only when Q 50 Protocol is ANNEX A A amp B Signaling carried by bits A and B C amp D Signaling carried by bits C and D Default A amp B 3 6 Configuring El Data Port Parameters The El data network side ports configuration activities include two tasks e Configuration of El data port physical parameters e Configuration of backup parameters for the network side connection Configuring El Data Port Physical Parameters gt To configure the El data port parameters 1 On the Config gt Physical Layer gt I O screen of the VC E1 16 module select E1 Port Data VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring El Data Port Parameters 3 11 Chapter 3 Configuration Parameter Channel ID Installation and Operation Manual 2 Select Channel ID and then enter the number of the desired port The range is 1 2 for a module using the external data ports NE and 1 to 4 fora module connecting to SDH ports NS 3 Configure the port parameters in accordance with t
179. rotocol packets transmitted Tx Total Bytes Total number of protocol data octets transmitted Tx 60 sec Frames Number of protocol packets transmitted during the last 60 seconds VC E1 16 VC E1 12 GM 2000 Ver 3 2 Performance Monitoring 4 7 Chapter 4 Troubleshooting and Diagnostics Parameter Tx 60 sec Bytes Installation and Operation Manual Description Number of protocol data octets transmitted during the last 60 seconds Tx UN Err Total number of transmit buffer underrun events Tx Over Discard Total number of protocol packets intended for transmission that have been discarded due to lack of buffer resources Tx Q Max Frames The maximum number of protocol packets that were queued at any time in the transmit queue Tx Q Cur Frames The current number of protocol packets that are waiting for transmission in the transmit queue Aver Outgoing Bw The average data rate in bps measured for the transmit direction of the selected subchannel Max Outgoing Bw The peak data rate in bps that has been measured for the transmit direction of the selected subchannel Configured Bw The user configured bandwidth in bps for the selected subchannel this number is determined by the number of timeslots assigned to the selected subchannel for example 10 timeslots result in a bandwidth of 640000 bps Comparing the three bandwidth Q50 Local State The Q 50 bandwidth control status
180. rranties which it makes relating to VC E1 16 VC E1 12 and for ensuring that replacements and other adjustments required in connection with the said warranties are satisfactory Software components in the VC E1 16 VC E1 12 are provided as is and without warranty of any kind RAD disclaims all warranties including the implied warranties of merchantability and fitness for a particular purpose RAD shall not be liable for any loss of use interruption of business or indirect special incidental or consequential damages of any kind In spite of the above RAD shall do its best to provide error free software products and shall offer free Software updates during the warranty period under this Agreement RAD s cumulative liability to you or any other party for any loss or damages resulting from any claims demands or actions arising out of or relating to this Agreement and the VC E1 16 VC E1 12 shall not exceed the sum paid to RAD for the purchase of the VC E1 16 VC E1 12 In no event shall RAD be liable for any indirect incidental consequential special or exemplary damages or lost profits even if RAD has been advised of the possibility of such damages This Agreement shall be construed and governed in accordance with the laws of the State of Israel Product Disposal To facilitate the reuse recycling and other forms of recovery of waste equipment in protecting the environment the owner of this RAD product is required to refrain from disposi
181. rs Description Total number of compressed voice packets received from the DSP Tx Total Voice Total number of compressed voice packets transmitted by the DSP to the network Rx Total Silence Total number of silence packets received from the DSP Tx Total Silence Total number of silence packets transmitted by the DSP to the network Rx Total Fax Total number of fax packets received from the DSP Tx Total Fax Total number of fax packets transmitted by the DSP to the network Rx Total Modem Total number of modem packets received from the DSP Tx Total Modem Total number of modem packets transmitted by the DSP to the network Rx Total Dtm Total number of DTMF signaling packets received from the DSP Tx Total Dtm Total number of DTMF signaling packets transmitted by the DSP to the network Rx Total Mf Total number of MF signaling packets received from the DSP Tx Total Mf Total number of MF signaling packets transmitted by the DSP to the network VC E1 16 VC E1 12 GM 2000 Ver 3 2 Performance Monitoring 4 9 Chapter 4 Troubleshooting and Diagnostics Parameter Rx Silence Rate Installation and Operation Manual Description Average percentage of silence measured for the timeslot receive direction Tx Silence Rate Average percentage of silence measured for the timeslot transmit direction Total Underrun Total number of packets lost because of jitter buffer underrun event
182. rt subchannel When using a framed mode multiple subchannels 1 to 10 can be configured and therefore it is necessary to select a specific subchannel for display However when a data port uses the unframed mode whole port serves as a single subchannel only one HDLC channel is available and no selection is needed The HDLC transport data can be analyzed to troubleshoot unsatisfactory performance or compressed voice transmission failures gt To display HDLC transport status data for voice ports Select the Status monitoring task Select the Physical Layer option Select the desired VC E1 16 module by specifying its I O slot number Select the E1 port type voice see 7able 4 1 Select the HDLC Counters option Select the desired voice port see 7ab e 4 1 Select the desired HDLC channel SS7 Data Flow A or HDLC Data Flow A OMe Ge se ee ae re When ready send a Display command Note You can reset the status counters by a C clear command Table 4 3 presents the HDLC transport status monitoring parameters for voice ports VC E1 16 VC E1 12 GM 2000 Ver 3 2 Performance Monitoring 4 5 Chapter 4 Troubleshooting and Diagnostics Note Installation and Operation Manual Rx identifies the receive direction from the local user s equipment to the VC E1 16 port Tx identifies the transmit direction from the VC E1 16 port to the local user s equipment Unless a specific time interval Is listed the displayed
183. runking over STM 1 Link sise 1 8 Interoperability with Vmux Family Products 1 9 1 4 F nctional DeScriptiOni ics ities cis Gi en he i te ee 1 10 Fur ictional BlockDiagr m 2 ses niiantiiemenluiin ei tee ans GM OENE eciees convie 1 10 User Interfacing Subsystem sise 1 11 Network Interfacing Subsystem sisi 1 12 Packet Bus Interfacing Subsystem ss 1 13 Support Tor NFL ProtectlOnin a cic cits Lions nonn ati ner sde ane then Kien t a eniai 1 14 Voice Compression Subsystem sise 1 15 Signaling Processing Subsystem eee eeaaeeeeeeaaeeeeeeaaaeeeeeae 1 15 Timing and Clock Generation Subsystem 1 16 Management Subsystem iii 1 16 VC E1 16 Operating Modes esse 1 16 UE INE Mode nidie niet aise fie va n iaaa Aa aA anaE a emmener ent iaa ii 1 16 US NE MOGE crierai nenaon aaa aa lunes pnntene ne en a noie evene san amenant 1 17 UE NS MOGE Re 1 17 USNS MOdE eridi eenias eeaeee gente teste nada een e ne al onr deal eet tu dite dat e de l 18 Processing Of Audio Signals sccseeessccstswenntseawsay eaten aiana a aa REE 1 18 Handling of Voice Signals ariissrcsrivsirigrinn nasienne etiaai dias eee a eee 1 18 Processing of Inband Signaling issus 1 21 Automatic Fax Processing sise 1 21 Handling of Voiceband Modem Signals 1 22 Handling of Voice Trunk Signaling ss 1 23 GAS HandliMg PP ER eta E A EEDE
184. s Total Overrun Total number of packets lost because of jitter buffer overflow events Total Heartbeat DSP heartbeat indication During normal operation the heartbeat count must increase continuously at a rate of a counts per second If the displayed value is not steadily increasing this may indicate a DSP error state to restore normal operation it is necessary to reset the VC E1 16 Illegal Voice Packets Total number of illegal received voice packets Q50 64K Seize Total number of Q 50 64 kbps clear channel call set up requests received from the local user s equipment for example a PBX Relevant only when the Q 50 mode is enabled Q50 Speech Seize Total number of Q 50 3 1 kbps voice channel call set up requests received from the local user s equipment Relevant only when the Q 50 mode is enabled Q50 Release Total number of calls that were released by the VC E1 16 port using the Q 50 protocol after being established Relevant only when the Q 50 mode is enabled Q50 Not Avail Co Total number of times the channel was reported as not available using the Q 50 protocol Relevant only when the Q 50 mode is enabled Q50 Speech Pack Total number of Q 50 3 1 kbps voice channel call set up requests that have been accepted by the VC E1 16 port Relevant only when the Q 50 mode is enabled Q50 Speech Nack Total number of Q 50 3 1 kbps voice channel call set up requests that have been rejected b
185. s been detected in the module VC E1 16 VC E1 12 GM 2000 Ver 3 2 Physical Description 1 5 Chapter 1 Introduction Installation and Operation Manual 1 3 Typical Applications This section provides typical applications for VC E1 16 modules For additional applications or an analysis of your particular application contact RAD Marketing Department High Capacity Toll Bypass Toll Bypass over SDH Networks Figure 1 2 shows a Gmux 2000 equipped with VC E1 16 modules used to provide a high capacity toll bypass link over the SDH network In this application a high capacity PBX located on customer s premises may be directly connected to a PSTN switch via a large number of E1 trunks The maximum number of El trunks depends on the desired protection level for the STM 1 link e When only one STM1 module is used line redundancy only the maximum number of El trunks supported by one Gmux 2000 chassis is 96 up to 2880 or 2976 compressed voice channels depending on the number of voice timeslots per trunk 30 or 31 e When two STM1 modules are used line and hardware redundancy the maximum number of El trunks supported by one Gmux 2000 chassis is 80 up to 2400 or 2480 compressed voice channels depending on the number of voice timeslots per trunk 30 or 31 ga Up to 5 or 6 VC E1 16 NC VC E1 16 STM1 Fe y Up to 80 or 96 Up to 80 or 96 E1 SIMA SDH GS ara Network Me caren Gmux 2000 F Gmux 2000 PBX with VC
186. signaling information for each payload timeslot timeslots 1 to 15 and 17 to 31 of voice user ports using channel associated signaling that is a G 704 multiframe mode separately for the receive and transmit directions This capability provides a powerful tool for troubleshooting voice channel problems because it enables monitoring in real time the timeslot signaling information The signaling information consists of four bits designated ABCD in the applicable standards see description in Appendix C of the Gmux 2000 Installation and Operation Manual VC E1 16 does not use the signaling information but only forwards the information end to end Generally the information is transparently transferred unless the user defines signaling profiles for translating the signaling information see Chapter 3 for a description of signaling profiles Therefore to interpret the displayed signaling information make sure to obtain the list of signaling codes used by the user s equipment gt To display the voice timeslot signaling information 1 Select the Status monitoring task 2 Select the Physical Layer statistics option 3 Select the desired VC E1 16 module by specifying its I O slot number 4 Select the El port type voice see 7able 4 1 5 Select the desired option Voice Rx Signaling Counters or Voice Tx Signaling Counters Note Rx identifies the receive direction from the VC E1 16 port to the local user s equipment
187. solutions de r utilisation de recyclage ou toute autre forme de mise au rebut de cette unit dans un esprit de protection de l environnement lorsqu il aura BR de utiliser 7 y 5 of un Instructions g n rales de s curit Les instructions suivantes servent de guide g n ral d installation et d op ration s curis es des produits de t l communications Des instructions suppl mentaires sont ventuellement indiqu es dans le manuel Symboles de s curit potentiels de s curit pour l op rateur ou le personnel de service quant Ce symbole peut apparaitre sur l quipement ou dans le texte Il indique des risques l op ration du produit ou sa maintenance Avertissement Mise la terre de protection la cosse ou la borne marqu e devrait tre connect e Danger de choc lectrique Evitez tout contact avec la surface marqu e tant que le produit est sous tension ou connect des lignes externes de t l communications ete a la prise de terre de protection du batiment Certains produits peuvent tre quip s d une diode laser Dans de tels cas une tiquette indiquant la classe laser ainsi que d autres avertissements le cas ch ant sera jointe pr s du transmetteur optique Le symbole d avertissement laser peut aussi tre joint Avertissement Veuillez observer les pr cautions suivantes e Avant la mise en marche de l quipement assurez vous que le c ble de fibre op
188. subchannel transfers data transparently CONNECT Always displays YES The displayed information cannot be changed Assign Entire When you want to use the whole The selection is made on a separate selection Time Slots to bandwidth of the data port for a single screen which opens when you try to configure Port subchannel you can directly select this this parameter subchannel and connect to it all the port See Assigning all the Port Timeslots to a timeslots instead of using Subchannel section on page 3 36 for details Config gt Connection gt TS Assignment This parameter is displayed only when Line Type is FRAMED G 704 or FRAMED G 704 CRC Line Type Selects the framing mode of the port UNFRAMED The port handles the traffic as an For point to multipoint applications always select a framed mode this will enable configuring multiple subchannels on the port for fractional utlization of the port bandwidth unframed 2 048 Mbps data stream Therefore the whole bandwidth is available for payload the equivalent of 32 timeslots versus 31 timeslots or 1984 kbps for the framed modes See Specific Configuration Parameters for Unframed Mode section on page 3 14 for additional details FRAMED G 704 The port handles the traffic as a basic G 704 framed signal with the CRC 4 option disabled This leaves 31 timeslots for payload FRAMED G 704 CRC The port handles the traffic as a basic G 704 framed signal with the CRC 4 op
189. t To configure the bundle voice processing parameters 1 On the Connection Configuration screen select Voice Parameters to display the corresponding submenu 2 Obtain the prescribed parameters and then use 7ab e 3 8 for parameter descriptions and configuration guidelines Table 3 8 Bundle Voice Parameters Parameter Function Coder Rate Selects the coder used for this bundle and the kbps resulting digitized voice data rate Note the following limitations related to the use of ITU T Rec G 711 coders e G 711 coders cannot be selected when the Super Tandem mode is ENABLE e The maximum number of active El voice ports when G 711 coders are used is 8 e Unlike the other options no real compression occurs with G 711 coders and the bandwidth needed to transfer a G 711 coded signal is on the order of one timeslot on the exit port e The only bandwidth reduction is due to the use of voice activity detection VAD and therefore when using a G 711 coder you cannot select OFF for the Noise Level for VAD parameter e When using a G 711 coder the MF Parameters options are not displayed Values G 723 1 6 4 Coder complying with ITU T Rec G 723 1 operating at 6 4 kbps G 723 1 5 3 Coder complying with ITU T Rec G 723 1 operating at 5 3 kbps G 729A 8 Coder complying with ITU T Rec G 729A operating at 8 kbps G 711 A Law PCM coder complying with ITU T Rec G 711 operates at a data rate of 64 kbps a
190. t System gt Card Type screen This selection must match the configuration selected by means of the internal switch Note Alternatively the selected module operating mode can be automatically detected by loading the Gmux 2000 hardware configuration using the Load HW command This option is recommended when starting the configuration of a new VC E1 16 however when the database js already prepared this command may affect the contiguration data of other modules which have been programmed in the database but are not installed in the chassis Table 3 1 specifies the available operating modes and identifies the module name to be selected for each mode VC E1 16 VC E1 12 GM 2000 Ver 3 2 Including a VC E1 16 in Gmux 2000 Database 3 3 Chapter 3 Configuration Installation and Operation Manual Table 3 1 VC E1 16 Operating Modes Card Designation User Side Voice Ports Network Side Data Ports VC16E1_UE_NE VC12E1_UE_NE External ports 1 16E1 or 1 12E1 External data ports LINK 1 LINK 2 VC16E1_UE_NS VC12E1_UE_NS External ports 1 16E1 or 1 12E1 SDH ports VC16E1_US_NE VC12E1_US NE SDH ports External data ports LINK 1 LINK 2 VC16E1_US_NS VC12E1_US_NS SDH ports SDH ports gt To specify the VC E1 16 operating mode 1 Move the selection block to the prescribed I O slot The slots supporting VC E1 16 modules are 1 0 1 to 1 0 5 1 0 7 and 1 0 9 a total of seven slots 2 The modules that can be installed in the
191. t the bundle structure the structure is determined by the connection mode and PSN type 2 Configure the bundle parameters corresponding to the selected structure These parameters include routing parameters and general parameters 3 Configure the voice processing parameters and the additional parameters needed to support voiceband modems and fax Note 7 TA The following sections provide guidelines for performing the required configuration activities assuming that you are familiar with the Gmux 2000 For full descriptions of connection parameters and detailed configuration Instructions refer to the Gmux 2000 Installation and Operation Manual Preliminary Configuration Steps gt To select the bundle to be configured for VC E1 16 voice ports 1 Open the Config gt Connection and then select Bundle Note You can modify an existing bundle only if it is not used by any other module If a bundle is in use first disconnect it 3 18 Configuring Connections for Voice Ports VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration 2 You can either modify an existing bundle by entering its number or select Add to define a new bundle The new bundle number is automatically assigned the next free number The bundle number appears at the top of each configuration screen gt To select the bundle structure 1 Select Connection Mode and then select TDMolP CV This means that you are
192. te Select the fraction of FISUs and LSSUs to be suppressed 0 no suppression is also suitable for protocols other than SS7 to 90 in 10 increments Configuring El Voice Port Physical Layer Parameters Use Config gt Physical Layer gt I O gt E1 Port Voice Parameter Values Parameter Values Channel ID 1 to 16 or 1 to 12 LIU Impedance BALANCE UNBALANCE Admin Status CONNECTED Profile 1 through 5 NC Idle Code 00 to FF Assign Entire Port 1 to 2000 to Bundle Restoration Time FAST Line Type FRAMED MF CCITT FRAMED G 704 TR 62411 FRAMED G 704 CRC FRAMED MF CRC Transmit CLK Source SYSTEM A Q 50 Protocol DISABLE LBT ANNEX A ANNEX B Interface Type for LTU Q 50 Bits Pair A amp B external ports only DSU C amp D 4 Configuring VC E1 16 VC E1 12 Modules VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Quick Start Guide Configuring El Data Port Physical Layer Parameters Configuration Parameters for FRAMED Modes Use Config gt Physical Layer gt I O gt E1 Port Data Parameter Values Parameter Values Channel ID 1 or 2 for external data ports Interface Type LTU 1 to 4 for connection to SDH ports DSU with BACKUP STATUS ENABLE Admin Status CONNECTED Sub Channel CHANNEL NUM 1 to 10 NC Configuration FUNCTION DATA RELAY CONNECT YES Backup Status DISABLE Assign Entire Time Slots Subchannel 1 to 10 ENABLE to Port for framed modes only Idle Code 00 to FF Line Type FRAMED G 704
193. tected in module Port Indicators LOC red Indicator per Port Lights for loss of signal local loss of synchronization or local loss of synchronization AIS REM red Indicator per Port Lights for remote loss of synchronization Diagnostics Loopbacks e Local loopback on each E1 voice port e Remote loopback on each E1 voice port e Local tone injection in selectable voice port timeslots e Remote loopback on each El data port Self Test Automatically performed upon power up or reset Physical Occupies a single 1 0 slot 1 0 1 to 1 0 5 1 0 7 and 1 O 9 Configuration e Programmable via Gmux 2000 management e Fully compatible with the RADview SC Vmux Service Center for Vmux Applications 1 32 Technical Specifications VC E1 16 VC E1 12 GM 2000 Ver 3 2 Chapter 2 Installation and Operation This Chapter provides installation configuration and operation instructions for the VC E1 16 module The information presented in this Chapter supplements the Gmux 2000 installation configuration and operation instructions contained in the Gmux 2000 Installation and Operation Manual 2 1 Safety first disconnect all the cables from the module and then remove the module from the Gmux 2000 enclosure Warning No internal settings adjustment maintenance and repairs may be performed by either the operator or the user such activities may be performed only by a skilled technician who is aware of the hazards involved Always observe standar
194. ter the slot of the protection VC E1 16 or VC E1 12 module in the CH NUM 1 row leave the port field value as 0 Enter the slots of the protected VC E1 16 respectively VC E1 12 modules in the other rows Select for each module its protection Priority Low or High VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring VC E1 16 VC E1 12 Modules 11 Quick Start Guide Installation and Operation Manual 12 Configuring VC E1 16 VC E1 12 Modules VC E1 16 VC E1 12 GM 2000 Ver 3 2 Contents Chapter 1 Introduction LL VSM GW Ss be te Boies da an cone Ade de ee nn de Ste ee Te PUIPOSG vis cccuvacsescuaten sertunbetareansuveetactanhi OR OR D D Med Model Sienese es ain lgiiie livin Riese Gig che cnet eng eee eae Jel Main Features sise ir reesn tent aaar E E AEAEE EE E E ARA Reda den 1 1 1 2 Physical D s rnption sssrsitsn reines ie hevagets E a EN ve laure faeces tete peines 1 4 Mod le PNEIS insusiri RER teas destduessndnisinh qenachanduanelapegecns sq Indicator FUNCTIONS sr nt een a nette et tarde 1 5 Port Alarm INdIGators ss sinistres bene a adel ah 1 5 Module Status Indicators scsi suis ctinsent undueteasn derientans foetus metal 1 5 1 3 Typical Applications sisri srsti senmana aa aaa Ea dbavencdagan NKE iiaa 1 6 High Capacity Toll BYPASS iii 1 6 Toll Bypass Over SDH Networks iii 1 6 Toll Bypass over Packet Switched Networks 1 6 Connecting Multiple Remote Call Centers le Voice Trunking over Multiple El Streams ui 1 8 Voice T
195. th the same number 5 Confirm the connection by selecting Connect Entire Port to Bundle Disconnecting a Bundle from a Port You can disconnect all the timeslots of a VC E1 16 voice port that are connected to a specific bundle in one step using one of the procedures described above but with one difference e To disconnect a range of timeslots from the bundle instead of selecting Connect the TS Range to Bundle select Disconnect the TS Range from Bundle e To disconnect all the port timeslots from the bundle instead of selecting Connect Entire Port to Bundle select Disconnect Entire Port from Bundle VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring VC E1 16 Port Timeslot Assignment 3 35 Chapter 3 Configuration Installation and Operation Manual Configuring Timeslot Assignment for Data Ports Note The utilization of data port bandwidth is controlled by assigning timeslots that is bandwidth to each subchannel e For an unframed data port there is only one subchannel The subchannel is configured as part of the data port physical layer parameters configuration procedure as described in the Specific Configuration Parameters for Unframed Mode section on page 3 14 e Fora framed data port up to 10 subchannels can be defined this capability is required in point to multipoint applications Since each bundle serving a voice port of the corresponding VC E1 16 is configured to connect to a specific subchannel see Configuring Bund
196. timeslots Transparent Specifies the jitter buffer size used for data The jitter buffer size is specified as a Jitter Size carried in transparent timeslots multiple of 10 msec The allowed multiplier range is 2 to 10 equivalent to 20 to 100 msec in 10 msec steps Default 2 20 msec VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring Connections for Voice Ports 3 23 Chapter 3 Configuration Installation and Operation Manual Parameter Packetizing Interval Parameter Connectivity Packet Rate Sec Function Values Specifies the maximum time interval before a The allowed range is 10 to 90 msec in TDMolP packet is transmitted on this bundle 1 msec steps If the packetizing interval expires the Default 30 msec currently processed packet is transmitted even if not yet filled with the number of bytes specified by Max Bytes in Multiplexed Frame Make sure to select an interval compatible with the specified maximum number of bytes gt To configure the bundle connectivity check parameters 1 On the Connection Configuration screen select Connectivity Parameters to display the corresponding submenu 2 Select each of the parameters listed in 7ab e 3 7 and enter the prescribed values Table 3 7 General Bundle Parameters Connectivity Check Parameters Function Values Controls the rate at which keep alive packets The range is one packet every second 1 are transmitted for this bundle to one packet e
197. tion enabled This leaves 31 timeslots for payload Default FRAMED G 704 LIU Impedance See 7able 3 2 VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring El Data Port Parameters 3 13 Chapter 3 Configuration Installation and Operation Manual Specific Configuration Parameters for Unframed Mode When Line Type is UNFRAMED the port supports a single subchannel which uses the whole port bandwidth Therefore the following changes occur in the list of port parameters presented in 7ab e 3 3 e The Assign Entire Port to Bundle parameter is replaced by Sub Channel Number You can then select the number of the subchannel 1 to 10 assigned to the port only one subchannel is supported per port This number is used as a formal reference for displaying information that requires you to enter a subchannel number e Anew field appears TS Type You can select between Connected normal operation traffic can flow and NC which disables traffic flow through the subchannel and thus through the whole data port Make sure to save your changes before exiting you will be warned to save by a Save before Proceeding or Lose your Changes message The changes are saved to the edit buffer and therefore will take effect only when updating the database Configuring Backup for the Network Side Connection Overview of Backup Function To improve service availability the data ports can be configured to provide backup for the connection to the network
198. tique est intact et qu il est connect au transmetteur e Ne tentez pas d ajuster le courant de la commande laser e N utilisez pas des c bles ou connecteurs de fibre optique cass s ou sans terminaison et n observez pas directement un rayon laser e L usage de p riph riques optiques avec l quipement augmentera le risque pour les yeux e L usage de contr les ajustages ou proc dures autres que celles sp cifi es ici pourrait r sulter en une dangereuse exposition aux radiations ATTENTION Le rayon laser peut tre invisible 0 Ua c 0 i ra Les utilisateurs pourront dans certains cas ins rer leurs propres metteurs r cepteurs Laser SFP dans le produit Les utilisateurs sont avertis que RAD ne pourra pas tre tenue responsable de tout dommage pouvant r sulter de l utilisation d metteurs r cepteurs non conformes Plus particuli rement les utilisateurs sont avertis de n utiliser que des produits approuv s par l agence et conformes la r glementation locale de s curit laser pour les produits laser de classe 1 Respectez toujours les pr cautions standards de s curit durant l installation l op ration et la maintenance de ce produit Seul le personnel de service qualifi et autoris devrait effectuer l ajustage la maintenance ou les r parations de ce produit Aucune op ration d installation d ajustage de maintenance ou de r paration ne devrait tre effectu e par l op rateur ou l utilisateur
199. tre prises lors de la connexion de l alimentation CC pour viter des courts circuits et des risques d incendie Les unit s CC devraient tre install es dans une zone acc s restreint une zone o l acc s n est autoris qu au personnel qualifi de service et de maintenance Assurez vous que l alimentation CC est isol e de toute source de courant CA secteur et que l installation est conforme la r glementation locale La capacit maximale permissible en courant du circuit de distribution de la connexion alimentant le produit est de 16A Le coupe circuit dans l installation du b timent devrait avoir une capacit lev e de rupture et devrait fonctionner sur courant de court circuit d passant 35A Avant la connexion des c bles d alimentation en courant CC assurez vous que le circuit CC n est pas sous tension Localisez le coupe circuit dans le tableau desservant l quipement et fixez le en position OFF Lors de la connexion de c bles d alimentation CC connectez d abord le conducteur de mise la terre la borne correspondante puis le p le positif et en dernier le p le n gatif Remettez le coupe circuit en position ON Un disjoncteur facilement accessible adapt et approuv devrait tre int gr l installation du b timent Le disjoncteur devrait d connecter simultan ment les deux p les si l alimentation en courant CC est flottante Quick Start Guide If you are familiar with the VC E1 16 and VC E1 12
200. ts of AT amp T the time required for the port to TR 62411 after 10 seconds return to normal operation after local a FAST After 1 second loss of synchronization Default FAST Transmit CLK Source Selects the reference source used by SYSTEMA The port transmit timing is derived the transmit path of this port from the nodal timing provided by the Gmux 2000 Make sure to select the same timing timing subsystem A In this case make sure that the source for all the VC E1 16 ports equipment connected to the voice port uses loopback timing LBT The port transmit timing is locked to the clock signal recovered from the receive line signal of the port This locks the port transmit timing to the transmit timing of the local El equipment Default SYSTEM A VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring El Voice Port Parameters 3 9 Chapter 3 Configuration Parameter Interface Type Function Selects the characteristics of the line interface which determine the maximum attenuation of the receive signal that can be compensated for by the port receive path to obtain the BER performance required by the standards This parameter is relevant only when using the external port interface Installation and Operation Manual Values LTU LTU mode suitable for long haul applications The maximum supported line attenuation relative to the nominal transmit level 0 dB is 36 dB This selection is not recommended for
201. unctions are accessed under the Monitoring menu covered by Chapter 7 of the Gmux 2000 Installation and Operation Manual The main monitoring activities include e Display performance monitoring statistics and status information for VC E1 16 physical interfaces e Display performance and status information for connections bundles terminated on VC E1 16 ports Displaying Physical Layer Performance Monitoring Data The physical layer performance monitoring data includes e Statistics data Physical layer statistics are available for both user side voice ports and for network side data ports For each port you can see Data for the current 15 minute interval Data for any previous interval for which valid data is available The maximum number of previous intervals is 96 e Status data HDLC transport data for each voice user side and data network side port Voice transport data for each timeslot of each voice user port Signaling status for each timeslot of each voice user port The timeslot signaling data can be separately displayed for each direction receive and transmit Bandwidth control data for each voice port Displaying VC E1 16 Physical Layer Statistics The physical layer statistics enables detecting transmission errors on the links connected to the various ports The statistics data reported by VC E1 16 modules see 7ab e 4 1 enable analyzing the transmission performance of the various
202. ure the appropriate bundle before trying to select its number The available selections are 1 to 2000 The selection is made on a separate bundle selection screen which opens when you try to configure this parameter Default O no bundle selected 3 10 Configuring El Voice Port Parameters VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Parameter Line Type Function Selects the framing mode of the corresponding port When all the 31 timeslots of a port are used as voice ports always select FRAMED G 704 or FRAMED G 704 CRC Chapter 3 Configuration Values FRAMED G 704 The port handles the traffic as a basic G 704 framed signal with the CRC 4 option disabled This mode supports CCS FRAMED G 704 CRC The port handles the traffic as a basic G 704 framed signal with the CRC 4 option enabled This mode supports CCS FRAMED MF The port handles the traffic as a G 704 framed signal with multiframe structure based on timeslot 16 with the CRC 4 option disabled This mode supports CAS FRAMED MF CRC The port handles the traffic as a G 704 framed signal with multiframe structure based on timeslot 16 with the CRC 4 option enabled This mode supports CAS Default FRAMED MF Q 50 Protocol Controls the use of the ITU T Rec Q 50 protocol for the selected port You should enable the protocol only when the equipment connected to the port for example PBX supports this p
203. ut gains to compensate for the expected attenuation and thus improve the perceived voice quality You can also decrease the receive output level or increase the nominal transmit input level as appropriate to prevent singing when echo canceling is not used Being able to select the correct nominal transmit input level that is a level that matches the nominal signal level received from the voice equipment has an additional advantage it ensures the best voice compression performance because the compression DSP then operates at its optimum point e Support for super tandem links that is links which comprise several segments connected in tandem where each segment could perform voice decompression and compression Recompression would significantly degrade voice quality Therefore when the super tandem mode enabled VC E1 16 detects whether the arriving voice data has already been compressed by another VC E1 16 or Vmux unit and transfers such data unmodified This is always required on the intermediate segments of tandem links When the super tandem mode is enabled the uncompressed voice option that is the use of ITU T Rec G 711 coders is not available 1 20 Functional Description VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 1 Introduction Note Processing of Inband Signaling Inband signaling by means of tones for example DTMF MFR2 and MFC is widely used in modern telephony networks
204. valid data is taken into consideration 4 8 Performance Monitoring VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics gt To display voice timeslot status Note Note Parameter Rx Total Voice l oy ok wes 8 Select the Status monitoring task Select the Physical Layer statistics option Select the desired VC E1 16 module by specifying its 1 0 slot number Select the E1 port type voice see 7able 4 1 Select the Voice Counters option Select the desired voice port see 7ab e 4 1 Select the desired timeslot in the range of 1 to 31 Skip timeslot 16 when using the G 704 multiframing mode because in this case timeslot 16 carries signaling information signaling information can be analyzed using the voice signaling status monitoring functions explained on page 4 71 When ready send a Display command You can reset the status counters by a C clear command Table 4 5 presents the voice timeslot status monitoring parameters Rx identifies the receive direction from the VC E1 16 port to the local user s equipment Tx identifies the transmit direction from the local user s equipment to the VC E1 16 port The displayed values represent the total accumulated since the equipment has been last turned on or since the last module reset or counters clear command whichever occurred last Table 4 5 Voice Timeslot Status Monitoring Paramete
205. vals The default value is 1 However you can also select another interval up to the number displayed in the Valid Intervals field The number of previous intervals up 96 for which performance monitoring information can be displayed This parameter is available only for the current interval The elapsed time in seconds since the beginning of the current interval in seconds Elapsed Time The range is 1 to 900 seconds This parameter is available only for the current interval ES Displays the number of errored seconds ESs in the selected interval An errored second is a second with one or more coding violations CVs or LCVs and or one or more of the following defects reception of AIS loss of line signal for external ports only SES Displays the number of severely errored seconds SESs in the selected interval A SES is any second with more than 40 coding violations CVs or LCVs and or one or more of the defects taken into consideration for an ES UAS Displays the number of unavailable seconds UASs in the selected interval UAS is declared after 10 continuous SESs During UASs all the other defect counters are freezed CW Displays the number of coding violations CV in the selected interval A coding violation is declared when a Bit Interleaved Parity BIP error is detected in the incoming signal and it indicates that errors have been detected in the received signal This parameter is available only for internal V
206. values represent the total accumulated on the corresponding HDLC channel since the equipment has been last turned on or since the last module reset or counters clear command whichever occurred last Table 4 3 HDLC Transport Status Monitoring Parameters for Voice Ports Parameter Rx Total Frames Description Total number of received protocol packets Rx Total Bytes Total number of received protocol data octets Rx 60 sec Frames Number of protocol packets received during the last 60 seconds Rx 60 sec Bytes Number of protocol data octets received during the last 60 seconds RX LG Err Total number of received protocol packets that had length violations Rx NO Err Total number of received protocol packets which were not octet aligned Rx CR Err Total number of protocol packets received with CRC errors Rx AB Err Total number of received protocol packets with abort sequence violations 7 or more consecutive ones Rx OV Err Total number of receive buffer overrun events Rx Busy Count Total number of times the received protocol packets were not processed because no resources were available Q50 Local State The Q 50 bandwidth control status at the local port Enable new calls or Disable reject new calls Q50 Remote State The Q 50 bandwidth control status at the far end equipment connected to the local port Enable new calls or Disable reject new calls Tx Total Frames Total num
207. very 60 seconds The keep alive packets are used to check Default 60 connectivity with the destination When loss of communication is detected VC E1 16 generates a BUNDLE OOS alarm and notifies the equipment connected to the voice port by sending the appropriate OOS indication Keep alive packets are relatively small and therefore require a negligible bandwidth Therefore the rate can be selected so as to minimize false alarms while reducing the time needed to reliably detect loss of connectivity e In a network with low transmission delay for example when using TDM links you can configure a higher rate shorter interval to ensure earlier detection of a failure e In packet networks where delays are more common it is recommended to set the connectivity parameters to their maximum values 3 24 Configuring Connections for Voice Ports VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration Parameter Function Values Connectivity Specifies the number of keep alive The available selections are 2 to 5 cycles Timeout Cycles transmission cycles within which VC E1 16 Default 3 expects to receive at least one reply from the far end For example when the Connectivity Packet Rate is 60 seconds and the Connectivity Timeout Cycles is 3 a bundle is declared out of service if no reply has been received within 180 seconds of the last reply Configuring Bundle Voice Parameters g
208. ween the SS7 link endpoints the LSSUs carry little new information e Fill in signal units FISUs used just to keep the HDLC signaling link alive These messages do not carry any information payload and are transmitted only when there no other types of SS7 signal units to transmit In the absence of other signaling traffic the signaling links carry a significant number of FISUs To reduce the bandwidth wasted to transmit LSSUs and FISUs the VC E1 16 can be configured to suppress a certain fraction of these messages up to 90 When the suppression ratio is 0 the channel performs the same as a HDLC channel VC E1 16 modules support one HDLC timeslot and one SS7 timeslot per voice trunk Packet Processing The assembly and disassembly of voice packets for transport over the network is handled by the main processor Two sets of parameters for this purpose are needed e Parameters used to define compressed voice CV bundles A bundle consists of selected timeslots from a common voice port that have the same destination and require identical processing same voice coding method same voice processing parameters etc e Parameters used to define the network connection parameters that is a physical port and the assigned bandwidth number of timeslots on that port for the compressed voice traffic The bandwidth is determined by defining subchannel characteristics Note Multiple bundles may be carried over a single su
209. with ITU T Rec G 711 operating at a data rate of 64 kbps and sending frames every 5 msec G 711 64k 10 msec PCM coder complying with ITU T Rec G 711 operating at a data rate of 64 kbps and sending frames every 10 msec G 726 32k ADPCM coder complying with ITU T Rec G 726 operating at a data rate of 32 kbps this rate is commonly used in Europe and other countries using the El based hierarchy G 726 24k ADPCM coder complying with ITU T Rec G 726 operating at a data rate of 24 kbps this rate is commonly used in North America and other countries using the Tl based hierarchy Default G 711 64k 5 msec VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Fax Enables disables fax signal relaying for this bundle Chapter 3 Configuration ENABLE Fax signal relaying is enabled The fax signal is identified and demodulated by the receiving side the resulting data is transmitted through the link as a digital signal and reconverted to a clean fax signal at the other side Each end is also capable of interpreting the Group Ill fax handshaking protocol to enable setting up fax calls in accordance with the fax standards DISABLE Fax signal identification is disabled Default ENABLE Fax Rate kbps Determines the maximum fax transmission rate When selecting a specific fax rate you instruct the VC E1 16 to operate in the fax relay mode the fax signal is demodulated as a Group
210. with standard packet structure Always select this type for compatibility with other vendors equipment using AAL2 over MPLS a AAL2oMPLS AAL2 over MPLS with RAD proprietary packet structure This proprietary structure which increases the connection bandwidth utilization efficiency by reducing the number of overhead bytes carried in each packet can be used only when the equipment at the other end of the link is another VC E1 16 or a Vmux Voice Trunking Gateway with compatible software version The default for MPLS ETH networks is AAL20MPLS VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring Connections for Voice Ports 3 19 Chapter 3 Configuration Configuring Bundle Parameters Parameter Connection State Installation and Operation Manual Configuring Bundle Routing Parameters gt To configure the bundle routing parameters 1 Select Connection Configuration and then select Routing Parameters 2 Obtain the prescribed parameters and then use 7ab e 3 5 for parameter descriptions and configuration guidelines Table 3 5 Bundle Routing Parameters Function Selects the state of the connection defined by means of this bundle The maximum number of bundles that may be simultaneously active for a VC E1 16 is 32 Values DISABLE The bundle is not active You can still configure and save the desired parameters to prepare the bundle for activation when needed ENABLE The bundle is active Default DISABLE
211. wn commands call status etc for each channel An often used method for call control is called channel associated signaling CAS CAS can be used when an El port uses G 704 framing with timeslot 16 multiframe identified as Framed MF and Framed MF CRC on supervision terminal screens In this framing mode the 32 timeslots of each El frame are used as follows 3 4 Configuring VC E1 16 Global Parameters VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 3 Configuration gt Note e Timeslot O carries general framing information e 30 timeslots carry voice channels the payload itself e Timeslot 16 carries the signaling information for all the channels using a special repetitive multiplexed structure spread over 16 frames this structure is called multiframe This structure enables using four signaling bits designated A B C D for each channel for a total of 30 signaling channels the first frame in each 16 frame multiframe carries a multiframe alignment signal that requires 4 bits an additional bit indicates loss of multiframe alignment and the remaining 3 bits can be used for other purposes see the Bandwidth Management section below To provide the flexibility needed to adapt to variations to the standard signaling codes that are sometimes implemented by PBX equipment manufacturers VC E1 16 supports the definition of specific interpretation or translation rules called signaling profile The pr
212. y the VC E1 16 port Relevant only when the Q 50 mode is enabled Q50 64K Nack Total number of Q 50 64 kbps clear channel call set up requests that have been rejected by the VC E1 16 Relevant only when the Q 50 mode is enabled Q50 Ts State Displays the current state of the Q 50 protocol e OOS Q 50 is enabled but signaling between the VC E1 16 port and the local user s equipment is out of service e Used Q 50 is enabled and signaling between the VC E1 16 port and the local user s equipment is active e Not Used Q 50 is not available on this channel Ts Mode 4 10 Performance Monitoring Displays the current operational state of the selected timeslot e Config the timeslot is under configuration e Idle the timeslot is idle e Setup a call is being setup on this timeslot e Voice the timeslot carries voice traffic e Data the timeslot carries modem traffic e Fax the timeslot carries fax traffic e VBD the timeslot carries voiceband modem traffic e Tandem the timeslot operates in the super tandem mode e HDLC the timeslot carries HDLC data e Transp the timeslot carries data in the transparent mode reserved e Unknown the timeslot state is not known and cannot be retrieved VC E1 16 VC E1 12 GM 2000 Ver 3 2 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics Displaying VC E1 16 Physical Layer Voice Port Signaling Status VC E1 16 enables displaying in real time the
213. y the high priority module will be protected VC E1 16 VC E1 12 GM 2000 Ver 3 2 Configuring N 1 Protection 3 39 Chapter 3 Configuration Installation and Operation Manual 3 40 Configuring N 1 Protection VC E1 16 VC E1 12 GM 2000 Ver 3 2 Chapter 4 Troubleshooting and Diagnostics 4 1 Overview This Chapter explains the module specific diagnostic functions of the VC E1 16 module The VC E1 16 diagnostic functions include e Sanity checks detection of alarm conditions and event collection These functions are general Gmux 2000 diagnostic functions and therefore the messages associated with VC E1 16 modules are explained in Chapter 7 of the Gmux 2000 Installation and Operation Manual e Collection of VC E1 16 performance monitoring and status data presented in Section 4 2 e Diagnostic tests for checking transmission paths presented in Section 4 3 e Hardware troubleshooting instructions and solutions for frequently encountered problems presented in Sections 4 4 and 4 5 The information presented in this Chapter supplements the general Gmux 2000 diagnostics instructions contained in Chapter 7 of the Gmux 2000 Installation and Operation Manual If you need additional support for this product see Section 4 6 for technical support information 4 2 Performance Monitoring The VC E1 16 collects transmission performance and status data for its various ports and for the connections bundles terminated at the module p

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