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GT8 User Manual

1. Step2 Twisted pairs Currently the most commonly used standard wiring scheme is EIA TIA T568B shown in Figure 3 2 In the wiring scheme pin 1 and 2 are a pair pin 3 and 6 are a pair pin 4 and 5 are a pair and pin 7 and 8 are a pair According to the Figure 3 2 twisted pairs line up with colors 1 white orange 2 orange 3 white green 4 blue 5 white blue 6 green 7 white brown 8 brown It is specially noted that the green and white green are separated by a pair of blue wires It is a common mistake to put green and white green close together which will result in interference and therefore lower transmission efficiency T5686 Figure 0 2 T568B wire pairing scheme Step3 After lining up wires to the correct pin positions trim all the twisted pairs with a cable cutter leaving 15mm leads exposed Then follow Figure 3 3 by inserting wires to their corresponding pin position in the plastic shell of RJ45 connector Pin 1 will house white orange wire etc Be E www greatel net Installation The first recepticle White and orange Figure 0 3 RJ 45 Wiring Step4 After wires have been properly inserted into RJ45 connector a cramping tool can secure the wires to the connector and make connections to the metal pins as shown in Figure 3 4 Figure 0 4 Finished RJ 45 Since this is a direct connection the connector for the other end of the cable can be made the same way using RJ45 connector After the Ethernet
2. Domain Name In the Domain Name field enter the internet address or the IP address Default Packages In the Default Packages field enter all default packages Use comma to separate each package The default setting is L D G which means Line Package DTMF Package and Generic Media Package Persistent Line Event In the Persistent Line Event field enter all types of persistent line event Use comma to separate each line event The gateway will report to call agent when it handles an event The default setting is L HD L HU and L HF L HD means off hook L HU means on hook and L HF means hookflash Wildcard In the Wildcard field select yes or no to indicate if GT8 will put the fixed prefix when it registers such as aaln All Wildcard physical endpoints hardware installation is needed while virtual endpoint can be created using available software Call Agents come with the capability of creating new connections or modify an existing connection Generally a media gateway is a network element which provides conversion between the data packets carried over the Internet or other packet networks and the voice signals carried by telephone lines The Call Agent provides instructions to the endpoints to check for any events and if there is any create signals The endpoints are designed in such a way as to automatically communicate changes in service state to the Call Agent The Call Agent can audit endpoints and the connect
3. In Busy Tone Off Time field enter the time interval each busy tone is sent This time should be determined by the equipment the FXO is connected to International standard is 350ms Advanced FXS Options Click the Advance Config link on the left side of Figure 4 1 Then click FXS Config The FXS Optional screen displays as shown in Figure 4 21 FIS Optional FXS Gain To Phone 3 0 FXS Gain To IP 0 FXS Impedance Complex Impedance w FXS Relay Timeout 0 Digit On Time ms 100 Digit Off Time ms 100 Hookflash Min ma T Hookflash Max ms Hook Status Change ms Reverse Battery Type Reverse Battery Timeout Music Holding DSP Tone Volume Release Timeout Son Figure 0 21 FXS Optional Screen FXS Gain To Phone 64 www greatel net Function Description Enter the volume increase to FXS telephone The range is 6 to 3db Default is 3 0dB decrease 3 decibel FXS Gain To IP Enter the volume increase to IP network The range is 3 to 3db Default is OdB FXS Impedance Set the FXS impedance number Options include Complex Impedance 6000 and 9000 Default is 6000 FXS Relay Time In the FXO Relay Time field enter the delay time in sending out the digits to the PSTN from the FXO side The default is 400ms Digit On Time In the Digit On Time field enter any number from 80 to 150 This is the speed
4. 101 www greatel net Function Description UDP Port Port has two meanings in network technology One is the physical port via which other equipments can be connected The other is the logical port interfacing with different network protocols Logical port can be of two types as well depending what protocols we are talking about One is TCP port the other is UDP port UDP port is a protocol port for data packages No connection between client and server is required to use this port SNMP Trap Trap is part of SNMP A trap is a one way message from a network element such as a router switch or server to the NMS The messages are sent via UDP which means they are not guaranteed to arrive NAT Network Address Translator or Translation Network Address Translation an Internet standard that enables a local area network LAN to use one set of IP addresses for internal traffic and a second set of addresses for external traffic A NAT box located where the LAN meets the Internet makes all necessary IP address translations SDP Session Description Protocol SDP describes multimedia sessions for the purpose of session announcement session invitation and other forms of multimedia session initiation STUN Simple Traversal of UDP over NATs A protocol that allows applications to detect that a network address translation NAT is being used It can also detect the type of NAT and IP address assigned by it STUN was develo
5. e UDP Encrypted UDP encryption Also use encryption algorithm e Using Keyword UDP encryption using backward keyword encryption algorithm e Using Keyword2 UDP encryption using forward keyword encryption algorithm e RC4 Using RC4 encryption algorithm Encrypt Keyword Set encryption keyword when setting encryption method to UDP Encrypted Default value is None e Yes SIP Call ID will use server host name e No SIP Call ID will use server IP address 7 RC4 The RC4 encryption algorithm is stream cipher which can use variable length keys The algorithm was developed by Ron Rivest for RSA Data security Analysis shows that the period of the cipher is overwhelmingly likely to be greater than 10 Eight to sixteen machine operations are required per output byte and the cipher can be expected to run very quickly in software Independent analysts have scrutinized the algorithm and it is considered secure www greatel net 77 www greatel net Function Description EMS Optional After log in click Advanced Config gt EMS Config from the left pane The following displays ENS Optional Primary EMS Server 192 168 24 24 Secondary EMS Server EMS Log Level G EMS Retries 3 Reg Info Interval s 10 Phy Info Interval 5 900 SUBMIT Figure 0 25 EMS Optional screen Primary EMS Server Enter primary EMS Server IP address if you want to use EMS service Secondary E
6. voltage e Make sure the ports are connected to the right devices Note Itis very important to recheck all the installation work to ensure GT8 to function properly and trouble free www greatel net 17 FUNCTION DESCRIPTION Registration Step1 Power up the GT8 GT8 by default uses DHCP and will automatically detect an IP address if you cannot get the IP address when you connect to the computer directly use default IP address 192 168 2 218 After power up when customer line LCD stops flashing if the gateway uses MGCP protocol it will tell the IP address to any first off hook user if using SIP protocol you can press to get the IP address through any customer line at any time Step2 Double click e to open IE Explorer in the computer which is connected to the same network as GTS Step3 Type in GT8 IP address for example 192 168 2 218 El http 4192 168 2 218 and the web interface will display as shown in Figure 4 1 www greatel net 18 O Hetwork Supplementary O Dialing Rule and Routing O Advanced Config O Log Info www greatel net Function Description GT8 4S40 Va CREY Managementisystem F z Password TEB Version 1 9 2 219 Figure 0 1 VoIP Gateway System Configurations Interface GT8 has two levels of management the administrator level default password GTadmin and the operator level default password operator Administrator level
7. 27 Persistent Lime EVent svicscscvaciesseseavess cocescsvanscecediuseoosenccons colecucvisassceseces A OSEE EEE E EAEE i 27 Wi dei 27 All Wild dni A ao 27 End Of Lin USit 8 ois csesscicecscesccecencsceetevecsies tenet sventevendssgev seve IEA sien cov coves EE EE 28 www greatel net 3 Quarantine Default to LOOp cis cc feces elacssadespacesesessesspesescevtissededptsasesenvieadssasenetecsebessasesasessaes dadesunenees 28 Default Package Don t Send Name sss ocd ni eraa We La need eae a Rs 28 Always Enable Tst Digit TIMEOUT nosie E E nese coeseveneneeseensseensvessneenes 28 Onh ok don t Delete Connection ze ean iorie E A EE E E ARA TE Ea 28 Notify Inst ad of 401 402 o A A aes 29 Using L Package Handle FXO tito E E E AR 29 Using Configured Digit Map oi c s sdcsescsyscsaees cbesuscesdensepestiesessensantesenoapevbesthasenpebeapennsedbassscnvenadeces 29 SIP Olinda olaa 29 PP o le 30 SUP PROXY OO 30 SIP REGUS UAL ici A eee E EEEE 30 Registration EX pites S usaras scott o it a id 31 SIB Domall Name 3552550555 ETE EA E E A 31 Authentication Mode neri enei narei E E AEEA ER EE EE EEEE ARETAS 31 User NAME retier eei ee E E tess AE RE EE e E a a aa ar ra 31 PASS O A E ee E TAE 31 Network Configuration cx ENEE EE rE EEE 32 A eroe ea O ON 32 Gateway IP Addres Snoro AA es Mend Recta te eda oS 33 DHCP siii io ti oa 33 EthernetIBAddTESS cacoorion tocino a a ceusesuncsniesas Paces cesveue seupapen N E a A E 33 Subnet Mask is 33 Ha
8. No Answer Fwd Number Hotline Number Speed Dial List Fashion Ring ID Figure 0 17 FXS Settings Screen Phone Number In Phone Number field enter the phone number that is set up in section 4 3 Registration www greatel net 52 www greatel net Function Description In Registration field select on to register or off not to register Display Name In Display Name field enter the content to display in the outgoing calls You can enter up the 30 characters FXS lines that have name display capability can display what is entered here Password In Password field enter the registration password if you selected on in Step 3 Y Note The functions beyond this point only apply to SIP protocol When using MGCP protocol there is no need to set them up as the set up does not work Originating Restriction Select on to indicate the line can only receive calls but not initiate calls or off no restriction Call Waiting field Select on enable or off disable Call Holding Select on enable or off disable Call Forward Select on enable or off disable Caller ID Select on enable or off disable EER Function Description CID On Call Waiting Select on enable or off disable Anonymous Call Select on enable or off disable Hotline Select on enable or off disable Hotline Delay Select on enable or off disable Do Not Disturb Select on e
9. Port ecards taeee eee 14 Connecting FXS Cable a A A ae he a eee 16 Connecting FXO Cable iii it 16 Connecting the Power SUpDply cccecsscesesesesseseecseseseeecseseseeceaeseseeesaeaesceeeecaeaeeseecaeaeseeeacaeneeeaeaeateeees 17 Final Checks after InstallatiON o nnnonnncncncncnonicnnnnoconoconanononanonononanonononon anar anononononanono ara 17 FUNCTION DESCRIPTION vciasticaaas ena 18 FROGISUPEUOM tilo iba oe o tep E eiii aids 18 Function Description of Most Used BUttONS oooccncninicioncnonnnonnnonccnancnrancaronraror cnn nr carro rancio 19 System COMU ie 20 SU O RO 21 Hardware Ver ads 21 DSP VEN ii is 21 REP Port Min anid Mia A R E A 21 First Digit Timeout roie Piece oid A eh A A N RER 21 EDEN Ai 22 Critical Det Taala 01i EE EEEE TTE haconsetanspeensduisahdvase states 22 DIME Modena pon e a EE E E ene i a Se ae 22 Detail Codec Sadr tee erronee a 22 Echo cancele obrado A lisa 23 Set up the Phone NUMDEIS 2000 aaa 23 LAL Ware crs ES O NO NON 24 AA aras 24 EXS 1 4 FRO 4 ssccssccecs sessi isenieses sise cesssaench sisit san cesnev nani EEEE geveubeb sd secante A taa 24 MGCP SONO Quitar iaa TAE recy exestonstenateerasevens execusaverseneiay 25 MIG CR Ror isscerescos 3525 asieechastetesops sad acaatapebiresce aerobic nececito ari 26 Call Ape cccccvcsceee cesshencs toco cu scavacvecessstesessesns cuendelteu seve Clues sensu EEEE ENEE N sna EESE a sbenee 26 D main NaMe certena dada atan 2a Default Packages 2 E E E E E R A
10. Treat EL GT8 User Manual Release 2 3 www greatel net 1 Welcome Welcome to the GT8 VolP Gateway User manual This document covers features functionalities and installation procedures for the GT8 series and provides tested configuration examples for our gateway users After reading this book you will learn more about the gateway get familiar with the installation process and feel more comfortable in using the software to perform all administrative activities Version Document Version 2 3 Applicable Software Version 1 9 x Series Copyright Copyright 2007 GED All rights reserved www greatel net 2 TABLE OF CONTENTS PRODBUCTINTRODUCT O Nic a 7 A NN 7 EMS EER AE EA AA ET ea eects epk E E ea ee Sb IAA E E A eee eee 8 Hardware Platform ren ii e EA Ra E A E Ae Re RS 9 Physical emine A I E E E eee estas 9 System SpecificatioD Sesi eiT aE R a A E E R E RE EAEE RERS 10 PREPARATION FOR INSTALLATION iaria in e EEE E RAA 11 Sally CHECK EAS NS 11 Installation EnivirOnmMents s coto ot eii 11 Temperattre Amd A A 11 Dust Control anid Air PLOW ii o 12 Interference and Lightening Hazard occ ceeesesscesecesseeeeeceeeceeeseesceeseseceeeeeeesseeeseceaeeeeeeaeeeeeaeeaes 12 NR 12 Inspecting GT8 and lts Accessories oooocoiniccconononococncnncnnnononncnononon ono nnonon cnn nn oran cnn non narra rononcancannns 12 INSTALLATION a 14 Install CTE iii dsd 14 Conmecting ihe Cables ica ai 14 Connecting the Ethernet
11. creating physical endpoints hardware installation is needed while virtual endpoint can be created using available software Call Agents come with the capability of creating new connections or modify an existing connection Generally a media gateway is a network element which provides conversion between the data packets carried over the Internet or other packet networks and the voice signals carried by telephone lines The Call Agent provides instructions to the endpoints to check for any events and if there is any create signals The endpoints are designed in such a way as to automatically communicate changes in service state to the Call Agent The Call Agent can audit endpoints and the connections on endpoints 401 402 Response Code Response Code is a 3 digit response to the request indicating the processing results for requests For example 401 and 402 represent responses to the on hook and off hook operations NTFY Notification or Notify a command sent from gateway to call agent SIP Session Initiation Protocol Session Initiation Protocol SIP is the Internet Engineering Task Force s IETF s standard for multimedia conferencing over IP SIP is an ASCll based application layer control protocol defined in RFC 2543 that can be used to establish maintain and terminate calls between two or more end points Like other VoIP protocols SIP is designed to address the functions of signaling and session management within
12. either 5300 or 6300 according to specific applications DSP Speed On DSP clock frequency is 225MHz Off DSP clock frequency is 200MHz DSP Driver Default value is 1 or 0 to indicate to turn on or off dsp driver IP Packet in Tos IP Packet in Tos Field is used to set the quality assurance for the different classes of service T 38 In the T 38 field select on or off to indicate whether to invoke T 38 fax function or not on means to invoke off means not to invoke T 38 Data Frame Length In the T 38 Data Frame Length field set the packing interval for each T 38 data frame The value can be set as the fallowing 10 20 30 40 50 60 T 38 Redundancy Frame Numbers 2 G 723 1 Speech Codec G 723 1 dual rate speech coder performs compression and decompression of 8 kHz speech signals It encodes 16 bit PCM samples into 16 bit code words yielding 10 or 12 code words per 240 sample frames for the 5 3 Kbps and 6 3 Kbps channels respectively 60 of a phone call consists of silence Silence Compression Scheme and Voice Activity Detection VAD reduce network bandwidth usage and save valuable speech resources 21 TOS Type of Service TOS has 8 bits reserved to the service type in the IP datagram 0 2 means precedence 6 7 are unused 3 5 means D requests low delay T requests high throughput R requests high reliability respectively www greatel net 70 Function Description In the T 38 Redundancy Frame Numbers fi
13. fax facilities are those whose operation features are not defined by ITU Some of those features are encoded in FIF but their encoding method was not defined www greatel net 71 Function Description Setup T 38 jitter buffer value Default value is 250ms Valid value range is 40 1000 T 38 Receive Gain This sets the T 38 receiving gain value Default value is 1 Valid range is 0 4 e Values 0 and 1 mean 6dB and 3dB enhancement respectively e Value 2 means 0dB gain e Values 3 and 4 means 3dB and 6dB enhancements respectively T 38 Send Gain This field sets the T 38 sending gain value Default value is 2 Valid range is 0 4 e Values 0 and 1 mean 6dB and 3cB increment respectively e Value 2 means OdB increment e Values 3 and 4 mean 3dB and 6dB increment respectively Advanced SIP Options Click the Advance Config link on the left side of Figure 4 1 Then click SIP Config The SIP Optional screen displays Jitter Buffer Jitter is a major factor affecting the quality of IP calls Jitter buffer is a software process that eliminates jitter caused by transmission delays in Internet telephony VoIP network As the jitter buffer receives voice packets it adds small amounts of delay to the packets so that all of the packets appear to have been received without delays Voice signals are sequential by nature i e they must be played back in the order in which they were sent and the jitter buffer
14. for the registering mode of the gateway during the penetration of the private network If it is set to yes the system will keep the original Contact information during registering otherwise it will return NAT information SIP VIA using NAT Information The SIP VIA using NAT Information is used to indicate whether to use the public network address information obtained by NAT or the private network address information when setting up SIP VIA field If set to yes the gateway will use the public network address information obtained by NAT otherwise it use the private network address information SIP TO Adopt Domain Name Information The SIP TO Adopt Domain Name Information is used to indicate whether to use the Proxy information or the domain name information in SIP Setting when setting up SIP TO field Yes means the gateway will use domain name information in SIP Setting No means to use the Proxy information SIP CID Using Hostname 74 www greatel net Function Description Set whether Call ID in SIP message to use server host name or to use IP address Default value is No e Yes Use host name e No Use an IP address SIP PRACK The SIP PRACK is used to require the receiver to return PRACK thus to provide a reliability mechanism for provisional responses Set Yes enable or No disable with default No SIP Change Local Port Select 1 or 0 to turn on or off the function of change local sip port The default value
15. has higher access privilege and is allowed to change password for all users at all levels Operator level has lower access privilege and certain options are not available including network configurations password management and restore factory default settings GT8 allows multiple users to log on at the same time Only the first user logged on with highest privilege is able to change configurations The rest can only monitor configurations a Note1 After a user logs on he she will be automatically logged off if there is no activities for more than 10 minutes After that a user needs to log on again Note2 After complete configuration a user must completely log out instead of just closing the browser This will elevate the access level of the next logged on user so he she will be able to change the configurations Function Description of Most Used Buttons 19 Function Description At the bottom of each configuration page you will see two buttons Submit and Default e Submit When you are done with configuration click this button once so that the configuration can be saved After each submission you will be prompted by Submission is successful Please restart the gateway You need to click OK to confirm the action e Default Click the button once to restore the factory default setting for each parameter Y Note Clicking this button only restore the defaults settings for the current page It is different fro
16. m 125 TIMEZONE Adelaide SUBMIT T DEFAULT T Figure 0 8 Network Settings Screen Hostname 32 www greatel net Function Description In the Hostname field enter the GT8 gateway name You can use your own naming convention according to your network setup Gateway IP Address In the Gateway IP Address field enter the default GT8 IP address if you have not enabled DHCP services DHCP In the DHCP field select on or off to indicate to use DHCP or not to assign IP addresses and other network settings Ethernet IP Address In the Host IP Address field enter the GT8 Ethernet port number if you have not enabled DHCP services If you have enabled DHCP services this field will display the IP address that DHCP captures Subnet Mask In the Subnet Mask field enter the subnet mask address you obtain from your system administrator or from your ISP if you have not enabled DHCP services Hardware Address Leave the Hardware Address as it is You are not allowed to change it DNS In the DNS field select on or off to indicate to turn on DNS services or not You need to turn on DNS service when you use the domain name as the proxy server address or registration server address in your MGCP or SIP configuration 33 www greatel net Function Description DNS Primary Server In the DNS Primary Server field enter GT8 primary DNS server address if you have turned on DNS se
17. network Signaling allows call information to be carried across network boundaries Session management provides the ability to control the attributes of an end to end call 7 Registrar When a client powers on it will tell network its IP address in order to be found We call this procedure register The server that accepts this request is called registrar www greatel net 30 Function Description The address can be in either IP address form or domain name form When adopting domain name form it is necessary to invoke DNS service in the Network Setting page and set the parameter of DNS server The complete and valid setting is as following 201 30 170 38 5060 and regster com 5060 Registration Expires s In the Registration Expires s field enter the valid time in second for SIP re registration The default value is 30 seconds SIP Domain Name In the SIP Domain Name field enter the SIP domain name If the field is left empty GT8 will use the address of the Proxy as the domain name It is recommended that you do not use a private network IP address in this field Authentication Mode In the Authentication Mode field use the drop down menu to make a selection Per Endpoint means to register and authenticate wholly according to each individual line Per Gateway Reg means to register and authenticate wholly according to gateway Per Gateway Auth means to register according to each individual line and to au
18. packet consists of a Header and a Payload The first 12 bits are RTP Fixed Header Fields Payload can be either video or audio Figure 0 1 shows the RTP header format tt gt gt aS MPR SSRO MAR IM RIA CSRC Figure 0 1 RTP Header Format Key header fields and their meanings e CSRC Count CC 4 bits The CSRC count contains the number of CSRC identifiers that follow the fixed header For example one CSRC list can represent a audio conference This call uses a RTP mixer to combine audios of all callers into an RTP data stream e Payload Type PT 7 bits Indicates payload format including codec clock rate channel etc For example type 2 indicates payload in this packet is using ITU G721 codec sample rate is 8000Hz and using single channel e Sequence Number 16 bits The sequence number is mainly used to detect losses RTP does not try to re transmit for detected losses It s up the application to handle lost packets e Time Stamp 32 bits The timestamp is used to place the incoming audio and video packets in the correct timing order playout delay compensation The sequence number is mainly used to detect losses Sequence numbers increase by one for each RTP packet transmitted timestamps increase by the time covered by a packet For video formats where a video frame is split across several RTP packets several packets may have the same timestamp In some cases such as carrying DTMF touch tone data RFC 2833 RTP
19. port For example R 128 200 10 0 24 120 1 via 128 200 1 1 00 00 17 ethernet0 0 Border Agent Border Agent includes Sign Proxy and Media Proxy RC4 Algorithm The RC4 encryption algorithm is stream cipher which can use variable length keys The algorithm was developed by Ron Rivest for RSA Data security Analysis shows that the period of the cipher is overwhelmingly likely to be greater than 10100 Eight to sixteen machine operations are required per output byte and the cipher can be expected to run very quickly in software Independent analysts have scrutinized the algorithm and it is considered secure www greatel net 107
20. protocols that facilitate voice transmission over IP One such protocol is H 323 H 323 originated as an International Telecommunications Union ITU multimedia standard and is used for both packet telephony and video streaming The H 323 standard incorporates multiple protocols including Q 931 for signaling H 245 for negotiation and Registration Admission and Status RAS for session control H 323 was the first standard for call control for VolP and is supported on all Cisco Systems voice gateways SIP and H 323 were designed to address session control and signaling functions in distributed call control architecture Although SIP and H 323 can also be used to communicate to limited intelligence end points they are especially well suited for communication with intelligent end points Although SIP messages are not directly compatible with H 323 both protocols can coexist in the same packet telephony network if a device that supports the interoperability is available For example a call agent could use H 323 to communicate with gateways and use SIP for inter call agent signaling Then after the bearer connection is set up the bearer information flows between the different gateways as an RTP stream 99 Function Description Proxy Proxy is the kernel of SIP implementing message transfer functions Registrar When a client powers on it will tell network its IP address in order to be found We call this procedure regist
21. response port or not yes means to use the proxy port as the response port no means to use the default port 5060 RTP Port Mapping In the RTP Port Mapping field use yes or no to indicate to use invoke RTP port or not yes means to invoke RTP port mapping function and use local SIP port and RTP port no means not to use RTP port mapping function and use the port requested by STUN Always Send 180 In the Always Send 180 field select yes or no yes means to send180 in ISDN mode with voice prompt so that user can hear the normal ring back tone instead of voice prompt tone no means to send18x 73 www greatel net Function Description CPN From Request Line In the CPN From Request Line field select yes or no yes means to get the called number from Request Line no means to get the called number from To field Response Do Not Check Via In the Response Do Not Check Via field use yes or no to indicate whether to ignore the Via field or not yes means to ignore the Via field of the received message no means not to ignore the Via field of the received message Registration Keep Domain Name The Registration Domain Name Information during field is applicable only to gateways which use character type domain name yes means to use the full domain name information to register no means to just use the shared part of the domain name to register Registration Keep Contact The Registration Keep Contact field is used specially
22. set with NewRockTech 08 04 14 37 00 714074 config c 3033 INFO parameter T38_SEQ_MISORDER set with 6 08 04 14 37 00 715452 config c 3033 INFO parameter LISTEN_IP set with yes 08 04 14 37 00 796220 config c 3033 INFO parameter T38 set with on 08 04 14 37 00 797291 config c 3033 INFO parameter NAT_EXPIRE set with 300 08 04 14 37 00 798358 config c 3033 INFO parameter NAT_KEEP_ALIVE set with yes 08 04 14 37 00 799665 config c 3033 INFO parameter VAD_ACTIVATE set with yes 08 04 14 37 00 800997 config c 3033 INFO parameter G723_RATE set with 6300 08 04 14 37 00 802298 config c 3033 INFO parameter T38_RX_GAIN set with 1 08 04 14 37 00 803679 config c 3033 INFO parameter DSP_200M_SPEED set with 9 08 04 14 37 00 804379 config c 2925 Category MGCP 08 04 14 37 00 805805 config c 3033 INFO parameter DEFAULT_PACKAGE_LINE set with L D G 08 04 14 37 00 810422 config c 3033 INFO parameter PERSISTENT_EVENT_LINE set with L HD L HU 08 04 14 37 00 811127 config c 2925 Category SIP 08 04 14 37 00 812494 config c 3033 INFO parameter SIP_REG_EXPIRES set with 30 08 04 14 37 00 813750 config c 3033 INFO parameter SIP_REG_METHOD set with 0 08 04 14 37 00 817593 set IP address 127 0 0 1 for hostname lt localhost gt 08 04 14 37 00 819221 config c 3033 INFO parameter SIP_PROXY set with localhost 5060 08 04 14 37 00 820514 config c 3035 INFO pa
23. side of Figure 4 1 Then click Fashion Ring The Fashion Ring Settings screen displays as shown in Figure 4 13 Fashion Ring Settings Figure 0 13 Fashion Ring Settings Screen This screen is used to enter distinctive ring serial numbers for Fashion Ring feature subscribers or to display during operation the fashion ring numbers entered by the end users End users that have singed up for Fashion Ring services and have enabled the feature using the function key will hear the distinctive rings Set up Hotline Click the Supplementary link on the left side of Figure 4 1 Then click Hotline The Hotline Settings screen displays as shown in Figure 4 14 Hotline Settings Figure 0 14 Hotline Settings Screen 42 www greatel net Function Description This screen is used to enter hotline numbers for Hotline feature subscribers End users that have singed up for Hotline or Delay Hotline services have access to this feature For example FXS Line 1 s hotline number is set up as1680 If the end user of Line 1 has signed up for Hotline services when he goes off hook the phone will automatically dial 1680 However hotline users cannot dial any other numbers If the end user of Line 1 also signed up for Delay Hotline services within six seconds of going off hook if no other number is dialed the hotline number 1680 will be dialed if another number is dialed within six secon
24. timestamps may not be monotonic DTMF Dual Tone Multi Frequency In PSTN service after a call is connected user s touch tone info is transmitted via DTMF also known as second dial tone information It is widely used in intelligent network and value added services www greatel net 9 Function Description e Audio Voice data transparent transmit mode e 2833 A special RTP packet PT field of the header indicates this is a DTMF packet See FTC 2833 for details e INFO Information transmission mode Optional way of DTMF transmission As in SIP messages use INFO to indicate a DTMF signal www greatel net Speech CODEC Also called a voice codec or vocoder it is a hardware circuit that converts the spoken word into digital code and vice versa It comprises the A D and D A conversion and compression technique If music is encoded with a speech codec it will not sound as good when decoded at the other end A speech codec is an audio codec designed for human voice By analyzing vocal tract sounds a recipe for rebuilding the sound at the other end is sent rather than the soundwaves themselves The speech codec is able to achieve a much higher compression ratio which results in a smaller amount of digital data for transmission When telephones were first digitized in the early 1960s they generated digital streams of 64 Kbps Since then speech CODECS have reduced voice to as little as 5 Kops and less Echo Cancell
25. transferee and a new end point specified by the transferring party and terminates the session between the transferee and the transferring party At the end of a Call SIP terminates the sessions between all parties Conferences can consist of two or more users and can be established using multicast or multiple unicast sessions Components of SIP SIP is a peer to peer protocol The peers in a session are called User Agents UAs A user agent can function in one of the following roles e User agent client UAC A client application that initiates the SIP request e User agent server UAS A server application that contacts the user when a SIP request is received and that returns a response on behalf of the user e Typically a SIP end point is capable of functioning as both a UAC and a UAS but functions only as one or the other per transaction Whether the endpoint functions as a www greatel net 96 Function Description UAC or a UAS depends on the UA that initiated the request From an architecture standpoint the physical components of a SIP network can be grouped into two categories clients and servers Figure 1 1 illustrates the architecture of a SIP network SIP Clients SIP clients include e Phones Can act as either a UAS or UAC Softphones PCs that have phone capabilities installed and Cisco SIP IP phones can initiate SIP requests and respond to requests e Gateways Provide call control Gateways provid
26. Authentication Dial In User Service oo eee ceeeeteneeeeeenees 103 RADIUS Server ni a is aa 103 Signal Gain iii cian hago paar 103 Line Impedance ae canti caerse liada Aube gait enn t e re Teis 103 SNA Mode I E EA EE TA AET A TE IEEE IET 104 Jitter Butter nas 104 REP Payload TYPE 104 SID Silence Information Description 0 cece cessseseeseseseeeceseeceeeeceescneneceterseneneeers 104 VOICE PEO sified A eee 104 SYMMetric RUP ira 105 A E eases Bae ons Sete eseg esa Mata ba teins she tencees 105 SDP Session Description Protocol oo ccc cccssccsesessssssesescecesesceecseseseseceeseseseseees 105 G 723 1 Voice CODEC 00 ceecccccecceeceesesesesesesesesesesescneseseaescsescaeaescseacaeacaeaeaeseseaeaeaeaeeceeseeeaeeeaes 105 TOS Type Service ici io ccoo ect 106 T 38 Standard Fax ProtoC0l ooooooiociooicionicnoniononiononicnononnarcororcororrorcrrarnn narco narran 106 Redundancy FraMe io ta 106 A ee 106 NSF Nonstandard facilities oo ccc cccessseeseessseescseescueescueesesesseneeseecaeeeseeesseeeeeees 106 Request ine lt io BR a ee SS 107 O NN 107 Border Agent as 107 ROCA Algorithm eneren iia aio 107 www greatel net 6 PRODUCT INTRODUCTION Overview GT8 is a multi purpose VoIP gateway product series designed with the needs of service providers and enterprises in mind With GT8 gateways service providers can provide telephony and fax services to subscribers using many access methods such as FTTB H
27. FC and ADSL Enterprises can use the GT8 s traditional PBX interface to implement voice VPN solutions with their private IP or public VPN networks GT8 can also serve as a remote SIP terminal for IP PBX solution GT8 has a variety of models Each model can be customized to have different number of FXS ports and FXO ports It shares the same software system as other GED s VolP products GT48 and GTT and therefore keeps the advantages in functionality quality and compatibility of GED products In hardware GT8 uses Motorola s MPC852 as the Central Processing Unit and TI C5509 high efficiency chip to process voice and faxes The powerful hardware equipment ensures GT8 to send signaling and IP packets in different channels even when traffic is at the peak thus supports major functions such as voice codec G 711 G 729A G 723 1 GSM and iLBC and echo cancellation This manual is mainly about GT8 installation and web configuration Please note that after you have made changes to many of the parameters on GT8 Web Configuration page and clicked the Submit button you may get messages like Submission is successful Please www greatel net www greatel net PRODUCT INTRODUCTION restart the system to make the changes effective You need to restart GT8 using the instruction in Restart gateway GT8 also has the capability to restore the default settings Just click the Restore Default button GT8 configuration parameters have brie
28. MS Server Enter secondary EMS server IP address EMS Log Level This field value is automatically detected You do not need to change this field EMS Retries This field value is automatically detected You do not need to change this field Reg Info Interval This field value is automatically detected You do not need to change this field Phy Info Interval This field value is automatically detected You do not need to change this field Bill Optional 78 Function Description After log in click Advanced Config gt Bill Config from the left pane The following displays Bill Optional Bill Server Call Flag No v RADIUS RADIUS Client Side off v RADIUS Server Side off v RADIUS Start off v RADIUS Unsuccess Stop Off v Primary Server Key Secondary Server Key Timeout 3 3 v Retries Bo M sT Figure 0 25 IMSOptional screen Bill Server In Bill Server field enter the IP address and the port of the bill server Call Flag Select Yes or No to let the gateway work or not if the gateway lose communication with bill server RADIUS Client side Select on to invoke or off not to invoke to indicate to turn on or not the charging function of RADIUS client RADIUS Server side 28 RADIUS Remote Authentication Dial In User Service Remote Authentication Dial In User Service RADIUS is a client server protocol and software th
29. PCM samples into 16 bit code words yielding 10 or 12 code words per 240 sample frames for the 5 3 Kbps and 6 3 Kbps channels respectively GAO s G 723 1 software has switchable transmission rates over 5 3 or 6 3 Kbps channels providing 4 kHz of quality speech bandwidth in conformance with the ITU T standard The higher bit rate has greater quality The lower bit rate gives good quality and provides system designers with additional flexibility The ITU T G 723 1 standard specifies a coded representation that can be used for compressing the speech or other audio signal component of multimedia services at a very low bit rate as part of the overall H 324 family of standards This coder was optimized to represent high quality speech at the above rates using a limited amount of complexity lt encodes speech or other audio signals in frames using linear predictive analysis by synthesis coding The 105 www greatel net Function Description excitation signal for the high rate coder is Multipulse Maximum Likelihood Quantization MP MLQ and for the low rate coder is Algebraic Code Excited Linear Prediction ACELP TOS Type of Service TOS has 8 bits reserved to the service type in the IP datagram 0 2 means precedence 6 7 are unused 3 5 means D requests low delay T requests high throughput R requests high reliability respectively T 38 Standard Fax Protocol T 38 is an ITU T Recommendation T 38 describes the technical featur
30. T RECEIVED and ACTIVE number phone number C calling number D called number timestamp which has two types one is setup time whose duration is O another is connection time In the information shown on screen the former is setup time while the latter is connection time the unit is in seconds caller id this is a length of digit used to identify a call when SIP is switching information the length and value of the digit are randomly generated wel Function Description Resources Information Click Log Info link on the left of Figure 4 1 Then click Resource Info The Resource Info page displays In this page you can see the logon information including the IP address and level of the logon user of all WEB users SIP registration information telephone information and RTP information Login User Info gt gt gt gt gt 1 192 168 2 198 SIP Registration Info gt gt gt gt gt not enabled Call Context Info gt gt gt gt gt empty Rtp Context Info gt gt gt gt gt empty Figure 0 27 Resource Info screen Message Information Click Log Info link on the left of Figure 4 1 The click Message Log The Log Info page displays You can check all the call related information in this page empty Figure 0 28 Log Info screen www greatel net 82 Function Description Error Information Click Log Info link on the left of Fig
31. The term echo cancellation is used in telephony to describe the process of removing echo from a voice communication in order to improve voice quality on a telephone call In addition to improving quality this process improves bandwidth savings achieved through silence suppression by preventing echo from traveling across a network www greatel net 23 www greatel net Function Description Phone Number Settings Hardware FXS4 FXO4 Prefix FXS 1 FXS 2 FXS 3 FXS 4 FXO 1 FXO 2 FXO 3 FXO 4 Figure 0 3 Phone Number setting screen Hardware Leave the Hardware Settings field as it is GT8 has more than one model and the model number is set through the software This parameter is already predefined by the manufacturer You do not need to change it Prefix In the Prefix field enter a prefix number which is for fast setting for serial number You can leave it blank from FXS2 to FXO4 When FXS1 uses this prefix number FXS2 uses FXS1 number plus 1 and so on and so forth When you set GT8 to MGCP gateway the value of the prefix should be set to aaln 0 or aaln 1 If MGCP call agent starts from 0 then use aaln 0 if MGCP call agent starts from 1 then use aaln 1 When you set GT8 to SIP gateway the value of the prefix should be the first number of the serial phone number which the registry server assigns to the gateway For example if the number of gateway is 2002007 then 200 should be en
32. a E EEEE A RE 53 Caller MD arier eer a E r A E e a E E RAE 53 CID On Call WaltinS ista ETAT 54 Anonymous Call cs secs cccessssacsevecssadagesesencseeiceas exch svens coanscsnevecheuscevs cess ESETE KESSE EKTE canas n 54 Ot eyseesitees Gioiesthe aang oti ene E rias oR 54 Hothine Delays anna e E seks sones decision A E E E E E E E EE beets 54 www greatel net ay ae Dor Not Disturbed Ah et o O ate ees 54 Peed Dial sacs ch E AO Be 54 Fashion RIM Maite ie eae oat allie E A Balers eet 54 Re Verse Di a ads 54 DOE ii A 55 Maite otto iros 55 Call Control EEEE REE ds 55 O NA 55 Busy FO Wade a ns 55 No answer Fwd NUDE faces O E eat vacua eves OEE E E i R 55 Hotline NUDE aca 55 SI NA 56 Fashions Rin giles E 56 Setup tne AO cs ese ted ite a E ne eset E E A OEE AE ee EEEE EES 56 Phone NUMBER scales 57 REIS e e Oe 57 Display Name scriere isyeri ti eree E EE venenshevsonensbovaveseseesduatusnevees vvacscsoveibedes 57 O a APETA EE EAN TEE E AEA 57 Originating Restriction eniin EE A A es Reve el dase eE 58 NN 58 IDIEN LLO a EERE O AS 58 Echo Cancellation ceneni er a EE a ava nase E E E ONR 58 Detect ON a Eee e a a E e 58 Hotline NUM Der ESETA EE AEA E EE AEE 58 Advanced Options srini A A E 58 System Advanced OPON ivan 58 Advanced FXO OpiHons s en erre eea r ne aE E E E E E ETE R 62 Advanced FXS OPOS sseisnssess ssetceccessetesoescevscvevusssnchet scans crece KNEES ETEA VSEE EEE EEan 64 Advanced IP OPUN siii tido 66 Advanced SP OPt
33. a packet telephony 95 Function Description network Signaling allows call information to be carried across network boundaries Session management provides the ability to control the attributes of an end to end call SIP provides the capabilities to e Determine the location of the target end point SIP supports address resolution name mapping and call redirection e Determine the media capabilities of the target end point Via Session Description Protocol SDP SIP determines the lowest level of common services between the end points Conferences are established using only the media capabilities that can be supported by all end points e Determine the availability of the target end point lf a call cannot be completed because the target end point is unavailable SIP determines whether the called party is already on the phone or did not answer in the allotted number of rings It then returns a message indicating why the target end point was unavailable e Establish a session between the originating and target end point lf the call can be completed SIP establishes a session between the end points SIP also supports mid call changes such as the addition of another end point to the conference or the changing of a media characteristic or codec e Handle the transfer and termination of calls SIP supports the transfer of calls from one end point to another During a call transfer SIP simply establishes a session between the
34. a value that is greater than 10000 In the RTP Port Max field enter the maximum value of sending and receiving RTP port This is a required field It is recommended that you enter a value that equals 2 x number of lines the minimum value NB Note A VoIP call uses two RTP ports one for RTP and the other for RTCP If GT8 has four lines FXS then the RTP port is set to eight ports at least If RTP has less than eight ports four lines can not be used at the same time GT8 supports up to 8 FXS So it is highly recommended you set RTP to 16 ports The default minimum value is 10010 10030 You do not need to change it First Digit Timeout In the First Digit Timeout field enter the time in second allowed for the dialing of the first digit When a line goes off hook if within the time specified here the first digit has not been dialed GT8 will treat this as an abandoned call and will indicate to the caller to place the phone on hook The default value is 12 seconds 2 Function Description Inter Digit Timeout In the Inter Digit Timeout field enter the time in second allowed for the dialing of the middle digits Counting from the last digit dialed if within the time specified here no digit has been dialed the system will send the dialed digits out The default value is 12 second Critical Dgt Timeout In the Critical Dgt Timeout field enter the time in second for finished dialing amp This parameter is used in
35. able This indicates to check and forward the calling number from PSTN or not Hotline Number In Hotline Number field the Hotline number set up in Set up Hotline will display You can also enter a different number here to overwrite the previous number Advanced Options System Advanced Options Click the Advance Config link on the left side of Figure 4 1 Then click System Config The System Optional screen displays as shown in Figure 4 19 58 www greatel net Sys Log Server Debug Log Server Function Description System Optional Local Log Port 514 Event Log Level 4 Country ID China Forwarding Number Mode Forwarding Number Fashion Ring Max 0 Listen IP Yes v SNMP Port 2700 SNMP Trap Port 162 NAT IP Address NAT Refresh Timer ts 15 NAT Keep Alive Yes v STUN 0 STUN Server Sa Figure 0 19 System Optional Screen Sys Log Server This is the IP address of the Event Log Server It is used for remote debugging You do not need to set it under normal circumstance Debug Log Server This is the IP address of the Debug Log Server It is used for remote debugging You do not need to set it under normal circumstance Local Log Port Event Log Port Default is 514 Event Log Level Select any number from 1 to 5 The higher the level the more detailed the log Default is set to 3 Higher level may slow down sy
36. al The default function key is 80 For example Use the default function key for enabling distinctive ring Set the distinctive ring ID number from 01 must have two digits a To enable Go off hook Dial 80 On hearing the dialing tone dial 01 Go on hook 39 www greatel net Function Description b To verify Go off hook Dial 80 On hearing the distinctive ringing go on hook c To disenable Go off hook Dial 80 Go on hook Listen Fashion Ring The default function key is 88 To use Go off hook Dial 88 Dial distinctive ring ID number 01 Listen to the ring tones Dial distinctive ring ID number 05 Listen to the ring tones Dial distinctive ring ID number 12 Listen to the ring tones Dial distinctive ring ID number 34 Listen to the ring tones Go on hook Set up All Forward Click the Supplementary link on the left side of Figure 4 1 Then select Set Forward All You will see All Forward Settings screen as shown in Figure 4 10 All Forward Settings Figure 0 10 All Forward Settings Screen This screen is used to enter the forwarding numbers for All Forward feature subscribers or to display during operation the forwarding numbers entered by the end users Calls will be forwarded to those numbers only when the end users sign up for the Call Forwarding services and when they enable this feature using the functio
37. at enables remote access servers to communicate with a central server to authenticate dial in users and authorize their access to the requested system or service RADIUS allows a company to maintain user profiles in a central database that all remote servers can share It provides better security allowing a company to set up a policy that can be applied at a single administered network point Having a central service also means that it s easier to track usage for billing and for keeping network statistics Created by Livingston now owned by Lucent RADIUS is a de facto industry standard used by a number of network product companies and is a proposed IETF standard www greatel net 79 www greatel net Function Description Select on to invoke or off not to invoke to indicate to turn on or not the charging function of RADIUS server RADIUS Start Select on or off to indicate whether or not to transmit the initial RADIUS record when the charging function of RADIUS client or server is invoked RADIUS Unsuccess Stop Select on or off to indicate whether or not to transmit RADIUS record of the unsuccessful calls when the charging function of RADIUS client or server is invoked Primary Server In Primary Server field enter the IP address and the port of the primary RADIUS server If no port is set then the default port 1813 will be used Key In Key field enter the share key for the communication between primary RADIUS client a
38. at which FXO will keep at sending out digits The default is 100ms Digit Off Time In the Digit Off Time field enter any number from 80 to 150 This is the interval at which FXO sends out digits The default is 100ms Hookflash Min In the Hookflash Min field enter the minimum time for an effective hookflash Normally this number should be bigger than 75ms Hookflash Max In the Hookflash Max field enter the maximum time for an effective hookflash Normally this number should be smaller than 800ms Hook Status Change In the Hook Status Change field enter a number from 20 to 1000 This is the hook status change time If less than the time set here GT8 will ignore this status change Reverse Battery Type 65 Function Description Default value is Outgoing Two options are available for this parameter e Outgoing starting the collect call billing after outgoing call is connected e Both starting the collect call billing after incoming or outgoing call is connected Reverse Battery Timeout Set the delay from the ringing to sending the collect call billing signal The default is 3 seconds The valid value is from 0 to 30 seconds Music Holding Select to enable On or disable Off fashion ring when a call is put on hold Default value is Off Port Volume Control In the Volume Control field enter the volume gain to the PSTN The default is 3 5dB Release Timeout FXS line release time when set Ca
39. ation The term echo cancellation is used in telephony to describe the process of removing echo from a voice communication in order to improve voice quality on a telephone call In addition to improving quality this process improves bandwidth savings achieved through silence suppression by preventing echo from traveling across a network There are two types of echo of relevance in telephony acoustic echo and hybrid echo Speech compression techniques and digital processing delay often contribute to echo generation in telephone networks Echo cancellation involves first recognizing the originally transmitted signal that re appears with some delay in the transmitted or received signal Once the echo is recognized it can be removed by subtracting it from the transmitted or received signal This technique is generally implemented using a digital signal processor DSP but can also be implemented in software Echo 92 Function Description cancellation is done using either echo suppressors or echo cancellers MGCP Media Gateway Control Protocol Media Gateway Control Protocol MGCP is used for controlling telephony gateways from external call control elements called media gateway controllers or call agents A telephony gateway is a network element that provides conversion between the audio signals carried on telephone circuits and data packets carried over the Internet or over other packet networks MGCP assumes a call co
40. ault Package Don t Send Name no Always Enable 1 Dgt Timeout no On hook don t Delete Connection no Notify Instead of 401 402 no Using L Package Handle FXO yes Using Configured Digit Map no Default SIP Settings www greatel net Oe www greatel net Function Description SIP Port 5060 Registration Expires Second 30 Authentication Mode Per Endpoint Default Network Parameter Settings Gateway IP Address 192 168 2 1 DHCP on Local IP Address 192 168 2 218 Subnet Mask 255 255 255 0 DNS off PPPOE off Preference TIME Server 192 43 244 18 Alternate TIME Server 198 60 22 240 Timeout Minute 10 Query Interval Minute 120 Default FXS Settings Forbid to Call off Call Waiting off Call Holding off Call Forward off Caller ID off CID on Call Waiting off Anonymous Call off Hotline off Delay Hotline off No Disturb off Speed Dial off Fashion Ring off Reverse Battery off Default FXO Settings Forbid to Call off Hotline off Dial Ton on Echo Cancellation on Detect FSK off System Advanced Default Settings Event Log Type FILE Event Log Level 3 Country ID China Forwarding Number Mode Forwarding Number 88 www greatel net Function Description Fashion Ring Max 20 SNMP Port 2700 SNMP Trap Port 162 NAT Keep Alive no STUN off RADIUS Client Side off RADIUS Server Side off RADIUS Start off RADIUS Unsuccess Stop off Timeout Second 3 Retrie
41. bled in System Settings it will send out the RPT event at a regular interval according to the time interval set here Default value is 50 ms RTP Drop SID Set if the gateway should ignore received RTP SID Default value is No Note This needs to be set only when irregular frames are received RTP SID frames in Irregular lengths may cause noise or weird sound e Yes Ignore silence packet e No Keep silence packet RTP Media Function Set whether to enable Voice Proxy Default value is No This is more applicable to the setting where one gateway is on the public network while the other is on the private one Under normal situations Voice Proxy is not needed When symmetric RTP function is enabled gateway checks received RTP packet and extract IP and port information from it before dynamically changing IP address and port number used for sending e On Enable Voice Proxy e Off Disable Voice Proxy RTP Accel 15 RTP Real time Transport Protocol See Glossary 17 SID Stands for Silence Information Description 1 Voice Proxy See Glossary 68 Function Description Set whether to apply RTP gain when sending and receiving Default value is Yes e Yes Enable e No Disable SDP Global Connection Setup whether to obtain far end IP address from SDP global connection Default value is No e Yes Get far end IP address from SDP Global Connection Information e No Get far end IP address fr
42. cable is ready Connect one end of the cable to GT8 s WAN port and the other end to a switch or router Check the Ethernet status display light or flash means activity Connecting FXS Cable GT8 have FXS ports that connect to phones Connect one end of the RJ11 cable to the GT8 FXS port and connect the other end to a phone fax or PBX Connecting FXO Cable T6 Installation Certain GT8 products like GT8 4 or GT8 4S 4 have FXO ports that connect to PBX or PSTN Connect one end of the RJ11 cable to the GT8 FXO port and connect the other end to a PBX or PSTN line Connecting the Power Supply Before plugging GT8 into the power outlet it is suggested that tri phase power outlet be used and grounding be properly connected Please follow the procedure when connecting to the power source Step1 Plug the DC head of the power adaptor into GT8 s DC input socket Step2 Plug the AC head of the power adaptor into the power outlet of 110V or 220V Step3 Check to see if the PWR LED indicator is lit If PWR LED is lit everything is normal If not repeat Steps 1 to 2 Note If power up fails repeatedly please contact GED technical support Do not attempt to open GT8 to fix any problems Final Checks after Installation After installing GT8 and before it is powered on please make sure of the following e There is ample air space around GT8 for heat exhaustion e Power cord is standard and matches the required electric
43. cifies the signaling mode of auto dialing from FXO to PSTN The default is 100ms Digit Off Time In the Digit Off Time field enter any number from 80 to 150 This is the interval at which FXO sends out digits The default is 100ms Busy Tone Repetition In Busy Tone Repetition field enter a number from 2 to 5 This is the number of times GT8 keeps checking busy tone before it takes further action Busy Tone Frequency 1 In Busy Tone Parameter 1 field enter one of the signal frequency parameters IS is 61485 The formula is frequency 65536 cos 2 PI f 8000 where the value of frequency is an integer and f is the actually frequency value Busy Tone Frequency 2 S Signaling Mode Signal mode refers to inserting a silence signal periodically into the voice stream Standard used in China specifies 450 Hz 350ms ON 350ms OFF means signal cycle is 700ms insert 350 ms signal plus a silence signal of 350 ms for each cycle www greatel net 63 www greatel net Function Description In Busy Tone Parameter 2 field enter another signal frequency parameter IS is 0 The formula is frequency 65536 cos 2 PI f 8000 where the value of frequency is an integer and f is the actually frequency value Busy Tone On Time In Busy Tone On Time field enter the time one busy tone will last This time should be determined by the equipment the FXO is connected to International standard is 350ms Busy Tone Off Time
44. click Route Table The Route Table screen displays as shown in Figure 4 16 44 Function Description Route Table CPH ADD 999 CPN99838 REPLACE 10000 23456 ADD 8009 CPN2 SEND 180 010 RELAY 19751 CPN26xx ROUTE IP 222 222 2 100 5090 Figure 0 16 Routing Table Screen Routing table serves two main functions number swapping and route exchange The table is executed from top to bottom Number swapping always has advantage over route exchange A routing table can have a maximum of 100 entries Note The routing table is empty by default All the calls go to the SIP Proxy server and are routed by this server 1 Number Swapping One phone number consists of three sections Origination Number and Action e Origination can have the following values IP FXS and FXO IP can be any IP address a specified IP address and a specified IP address plus the port number FXS and FXO can be a specific line number for example FXS1 FXO2 or FXS 1 2 etc e Number can be the calling number or the called number Default is the called number If it is the calling number add CPN before the number as the identifier The number can use any digit between 1 to 9 X etc just like the digit map The common rules are Numbers such as 114 68640585 The beginning digits of a number such as 61xxxx or 612x or 61 Expressions such as 268 0 1 3 9 which indicates a number that starts
45. conjunction with x T in the dialing rule After the first digit in the rule has been dialed if within the time specified here no digit follows GT8 will send the dialed number out The default value is 5 seconds DTMF Mode In the DTMF Mode field select the transmission mode This parameter is used to set DTMF signal transmission mode Options are Audio mode 2833 mode and INFO mode The default setting is Audio mode a Audio mode is a transparent transmit mode b INFO mode is information transmit mode c 2833 mode is a RTP data packet transmit mode Default Codec In the Default codec field select the codec GT8 supports GT8 support G729A 20 G723 30 PCMU 20 PCMA 20 GSM iLBC codec DTMF Dual Tone Multi Frequency In PSTN service after a call is connected user s touch tone info is transmitted via DTMF also known as second dial tone information It is widely used in intelligent network and value added services e Audio Voice data transparent transmit mode e 2833 A special RTP packet PT field of the header indicates this is a DTMF packet See FTC 2833 for details e INFO Optional way of DTMF transmission As in SIP messages use INFO to indicate a DTMF signal Voice CODEC Also called a voice codec or vocoder it is a hardware circuit that converts the spoken word into digital code and vice versa It comprises the A D and D A conversion and compression technique If music is encoded with a speech cod
46. ction field select yes or no If you select yes the gateway will delete the connection when the caller does not go on hook if you select no the gateway will wait for the call agent to delete the connection 28 Function Description Notify Instead of 401 402 In the Notify Instead of 401 402 select yes or no If you select yes the gateway will use notification message instead of 401 402 message Using L Package Handle FXO In the Using L Package Handle FXO field select yes or no If you select yes the gateway will treat FXO as FXS if you select no it will handle FXO and FXS in different ways Using Configured Digit Map In the Using Configured Digit Map field select yes or no If you select yes the gateway will invoke the dialing rule if you select no it will use the rule of soft switch SIP Setting Click the SIP link on the left of Figure 4 1 and the SIP Settings screen displays 5 401 402 Response Code 6 SIP Session Initiation Protocol Session Initiation Protocol SIP is the Internet Engineering Task Force s IETF s standard for multimedia conferencing over IP SIP is an ASCII based application layer control protocol defined in RFC 2543 that can be used to establish maintain and terminate calls between two or more end points Like other VoIP protocols SIP is designed to address the functions of signaling and session management within a packet telephony network Signaling allows call informatio
47. d number Ifthe number before REPLACE CPN means calling number the called number is indicated with digits directly If no means replace all o means the end of the number 47 www greatel net Function Description CPNn n means how many digits will be replaced Ifnis 0 means insert Ifn larger than the quantity of whole digits means replace all lf there is no number at the end of means remove If there is no number at the front of means insert the gateway will insert 0 automatically END means to terminate certain number processing When performing number swapping from top to bottom if END or ROUTE is present then end number swapping For example FXS 12345 ADD 8001 FXS 12345 REMOVE 4 FXS 12345 END This means for the called number from an FXS that starts with 12345 first add 8001 at the end of the number then remove the first four digits and end the number swapping for CDN that starts with 12345 Another example IP 222 34 55 1 CPNX REPLACE 2680000 IP 222 34 55 1 CPNX ROUTE FXS 2 This means for any CPN of any lengths that comes from IP address 222 34 55 1 replace it with 2680000 and then route it to the second line of the FXS SEND180 meaning to force sending 180 For example FXS CPN2 SEND180 meaning for CPN from the FXS that starts with 2 send 180 SEND183 meaning to force sending 183 For example FXS CPN3 SEND183 mean
48. d to change administrator password Please input the old password in the Old password field and input the new password in the New password field Enter the new password again in Confirm new password field then click the Submit button to finish The current operator password is displayed in plain text mode An administrator can change it at any time and does not need to input the current administrator password when he she wants to change the operator password Just enter a new password in Operator Password field and click the Submit button to finish Restart Gateway Click System Tools on the left of Figure 4 1 Then click Reboot After that click the REBOOT button to restart the gateway Reboot Click the button to reboot the VoIP gateway Figure 0 34 Restart Gateway screen Exit Click Logout on the left of Figure 4 1 Then exit WEB operation and display the login page 86 APPENDIX Factory Default Settings Default System Parameter Settings RTP Port Min 10010 RTP Port Max 10030 1 Digit Timeout Second 12 Inter Digit Timeout Second 12 Critical Digit Timeout Second 5 DTMF Transmit Mode AUDIO Default Codec PCMU 20 G729A 20 iLBC 30 G723 30 GSM 20 PCMA 20 Echo Cancellation on Default MGCP Settings MGCP Port 2427 Default Package L D G Persistent Line Event L HD L HU L HF Wildcard no All Wildcard no End of Line Using CR no Quarantine Default to Loop no Def
49. digit map The common rules are Numbers such as 114 68640585 The beginning digits of a number such as 61xxxx or 612x or 61 Expressions such as 268 0 1 3 9 which indicates a number that starts with 268 and followed by any number from 0 to 1 or 3 to 9 49 www greatel net Function Description The search for a matching number follows the principle of shortest and quickest For example x equals all numbers xx equals all two digit numbers 12x equals all three digit numbers that start with 12 e Action should be ROUTE meaning to route a call e Destination can have the following values NONE IP FXS and FXO Routes that have IP as the Origination usually have FXO FXS or NONE as Destination Routes that have FXO or FXS as the Origination usually have IP or NONE as Destination Routes that have FXX FXS as Destination can use the Destination Information as the route or to hunt for an idle line Routes that have IP as Destination the Destination Information section must provide a specific gateway IP address plus its SIP port number if no port number is defined use the default port number 5060 For example 192 168 2 10 5066 If the IP address is local use format localhost 5060 or 127 0 0 1 5060 For example IP 8621 ROUTE FXS 1 IP CPN8620 ROUTE FXS 2 This means a call to the called number from an IP address that starts with 8621 will be routed to the first FXS line while a call with callin
50. ds then this call is treated as a normal call Hotline function will be ignored Dialing Plan and Routing Table Set up the Dialing Plan Click the Dialing Plan link on the left side of Figure 4 1 Then click Digit Map The Digit Map Rules screen displays as shown in Figure 4 15 Digit Hap Rules O1Oxxxxxxxxxxxxxx 01011x 02x11x 01012 0 2 02x12 0 2 010123xx 02x123xx O1095xxx 02x95xxx Ol3xxxxxxxxx 0 3 9 xx11x 0 3 9 1xx12 0 2 0 3 9 xx123xx 0 3 9 xx95xxx D451xxxxxxxx Figure 0 15 Digit Map Rules Screen Digit Map is used to determine if the digits received are the complete numbers dialed so that the dialing process will terminate and the digits will be sent out in a speedy way This can shorten the connection time for calls 43 www greatel net Function Description GT8 has in its default Dialing Plan most of the domestic digit map rules You do not have to re configure them You can add new rules when necessary The following is an illustration of the common rules Table 0 2 Common Digit Map Rules Any single digit between numbers 0 to 9 any multiple digit between numbers 0 to 9 terminate dialing after receiving two digits is GT8 gateway s default function key for listening to the IP address x T The gateway will check a number of any lengths that is composed of any number between 0 and 9 If no new digits are received within the dialing finish time the gateway will
51. e many services the most common being a translation function between SIP conferencing endpoints and other terminal types This function includes translation between transmission formats and between communications procedures In addition the gateway translates between audio and video codecs and performs call setup and clearing on both the LAN side and the switched circuit network side e SIP Servers SIP servers include Proxy server The proxy server is an intermediate device that receives SIP requests from a client and then forwards the requests on the client s behalf Basically proxy servers receive SIP messages and forward them to the next SIP server in the network Proxy servers can provide functions such as authentication authorization network access control routing reliable request retransmission and security Redirect server Provides the client with information about the next hop or hops that a message should take and then the client contacts the next hop server or UAS directly Registrar server Processes requests from UACs for registration of their current location Registrar servers are often co located with a redirect or proxy server How SIP Works SIP is a simple ASCll based protocol that uses requests and responses to establish communication among the various components in the network and to ultimately establish a conference between two or more end points www greatel net 97 Function Description Users i
52. ec it will not sound as good when decoded at the other end A speech codec is an www greatel net 22 Function Description as well as manifold encoding modes at the same time Multiple values are demarked by commas When manifold encoding mode is selected the gateway will process the communication by selecting the encoding mode front to back which is supported by both sides Table 0 1 Codes supported Codec supported Codec made Time interval of RTP packets by GT8 transmission unit ms G729A 20 G 729A 20 G723 30 G 723 30 PCMU 20 G 711 20 PCMA 20 G 711 20 LBC 30 iLBC 30 GSM 20 GSM 20 Echo cancellation In the Echo cancellation select on to invoke echo cancellation and off to close echo cancellation The manufacturer s default is on You do not need to change it Set up the Phone Numbers Click Phone Number link on the left of Figure 4 1 and you will see what is shown in Figure 4 3 audio codec designed for human voice By analyzing vocal tract sounds a recipe for rebuilding the sound at the other end is sent rather than the soundwaves themselves The speech codec is able to achieve a much higher compression ratio which results in a smaller amount of digital data for transmission When telephones were first digitized in the early 1960s they generated digital streams of 64 Kbps Since then speech CODECS have reduced voice to as little as 5 Kbps and less Echo Cancellation
53. eech CODEC a e A e Pe 92 Echio CancellationM cooicici i n 92 MGCP Media Gateway Control Protocol ooooioiooniconnnncncncinnnonocncnnncnonononncnonononnnnonono 93 MGCP Call AgeMt tiicacinciao AE E RE ERa 94 401 402 Response Code cocoocococioiociccocionococooooccononon cono roo narco rn ro ronca rara rra 95 NIRV eea de ae ate E a a ese ee te ee hte ty 95 SIP Session Initiation Protocol cece escseesesesceeeecseseneeeceesesceeceeeeseneneesescneneeetscneneeeters 95 POX ci a Ai is 100 Registrar ocolio da e a eee 100 Registration EXpire S ocioteca oran ici cias 100 DNS Domain Name System or Service or Server eseese 100 PPPoE Point to Point Protocol Over Ethernet 0 0 0 0 cccccccseeseseeeceeeseeeeseneeeeees 100 Time SOPVen v 02 penpe heehee hh ete eet eaves etnies eee eens eit eel 101 Caller ID Detecting ec eeececcesescsensesescsensesescneneceesescseceseeseneneeseacsenaeseecucnecenecaeeesetetaeneneees 101 SNMP Simple Network Management Protocol cceceecececesesceeceeeeseeeceeeeseneneeees 101 UDP Port or Gtia Avena eater 102 SO NIM PUA EEE ose acs see a had etd AE cat a A O da A 102 NAT Network Address Translator or Translation oooconcnnnincninicinnicnonnncnnncanonnnos 102 SDP Session Description Protocol ececcessseecseseseeensesescsencesesencneceeecneneceeeeseeeneeers 102 STUN Simple Traversal of UDP over NATS ouu ccccccccccccccccscesescsesceseecssseseecssssesenseees 102 RADIUS Remote
54. eld of the invitation response For more information see RFC 2543 SIP Session Initiation Protocol which can be found at http Awww faqs org rfcs Using a Proxy Server www greatel net If a proxy server is used the caller UA sends an INVITE request to the proxy server the proxy server determines the path and then forwards the request to the callee The callee responds to the proxy server which in turn forwards the response to the caller The proxy server forwards the acknowledgments of both parties A session is then established between the caller and callee Real time 98 Function Description Transfer Protocol RTP is used for the communication between the caller and the callee Using a Redirect Server SIP Versus H 323 www greatel net If a redirect server is used the caller UA sends an INVITE request to the redirect server the redirect server contacts the location server to determine the path to the callee and then the redirect server sends that information back to the caller The caller then acknowledges receipt of the information The caller then sends a request to the device indicated in the redirection information which could be the callee or another server that will forward the request Once the request reaches the callee it sends back a response and the caller acknowledges the response RTP is used for the communication between the caller and the callee In addition to SIP there are other
55. eld set the number of the T 38 data frame in each T 38 data packet the effective range is 1 to 6 T 38 Change to UDP Port In the T 38 Change to UDP Port field select yes or no to indicate if the gateway will change the UDP port when switching to T 38 mode If set to no it will use the RTP port established during the connection T 38 ECM Mode Select On or Off to indicate whether to invoke T 38 error detection mode Default value is Off e On Enable error detection mode When error occurs and is detected gateway automatically re sends fax e Off Disable error detection mode V 21 Detective Setup whether to enable V 21 fax error detection Default value is On Note It is not necessary to enable V 21 if fax machine can send normal signals Set this parameter to Off to reduce DSP processing load e On Enable e Off Disabled T 38 NSF Modify Setup whether to shield from non standard fax transmission Default value is On Recommendation Set it to on e Oni Shield from non standard transmission e Off Not shield from non standard transmission T 38 Jitter Size 2 V 21 V 21 is an ITU T recommendation for full duplex communication between two analogue dial up modems using audio frequency shift keying modulation at 300 bauds to carry digital data at 300 bit s If fax machine doesn t get any fax signal the gateway can detect any fax signal throughV 21 2 NSF Non Standard facilities Non standard
56. ensures that the received packets are in the correct order Without a jitter buffer to smooth the transmission data can be lost resulting in choppy audio signals There are two types of jitter buffers dynamic and static A static jitter buffer is hardware based and configured by the manufacturer A software based jitter buffer is called a dynamic jitter buffer and can be configured by the system or network administrator 2 Signal Gain When detected signals are not strong enough over the network we use signal gain parameter to increase the strength of the signal www greatel net 72 www greatel net Function Description SIP Optional Response Using Received Port Response Using Proxy Port RIP Port Mapping Always Send 180 CPN From Request Line Do Not Validate Via Registration Keep Domain Registration Keep Contact SIP VIA Using NAT SIP TO Using Domain Name SIP CID Using Hostname SIP PRACK SIP Chang Local Port Sn Figure 0 23 SIP Optional screen METET EI EIEI EIEI aa anes Response Default Port Using Received Port In the Response Default Port Using Received Port field use yes or no to indicate to use received port as the response port or not yes means to use the received port as the response port no means to use the default port 5060 Response Default Port Using Proxy Port In the Response Default Port Using Proxy Port field use yes or no to indicate to use proxy port as the
57. er The server that accepts this request is called registrar Registration Expire s In order to control client side every register message has a certain stored period If the message is modified in that period which mean it works for user otherwise Registrar will consider the message is not useful any more so it will be deleted DNS Domain Name System or Service or Server DNS is a very important service of internet an Internet service that translates domain names into IP addresses Because domain names are alphabetic they re easier to remember The Internet however is really based on IP addresses Every time you use a domain name therefore a DNS service must translate the name into the corresponding IP address For example the domain name www example com might translate to 198 105 232 4 PPPoE Point to Point Protocol Over Ethernet PPPoE relies on two widely accepted standards PPP and Ethernet PPPoE is a specification for connecting the users on an Ethernet to the Internet through a common broadband medium such as a single DSL line wireless device or cable modem The feature of PPPoE e All the users over the Ethernet share a common connection e Allow single user P2P to different network e Ethernet principles supporting multiple users in a LAN combine with the principles of PPP which apply to serial connections www greatel net 100 Function Description www greatel net Time Server Time Se
58. es necessary to transfer facsimile documents in real time between two standard Group 3 facsimile terminals over the Internet or other networks using IP protocols The Recommendation allows the use of either TCP or UDP depending on the service environment Redundancy Frame Redundancy frame is used to ensure more reliable fax transmissions than that of RTP voice transmission V 21 V 21 is an ITU T recommendation for full duplex communication between two analogue dial up modems using audio frequency shift keying modulation at 300 bauds to carry digital data at 300 bit s If fax machine doesn t get any fax signal the gateway can detect any fax signal throughV 21 NSF Nonstandard facilities gt Non standard fax facilities are those whose operation features are not defined by ITU Some of those features are encoded in FIF but their encoding method was not defined 106 Function Description Request Line Request Line and Status Line are one of the RFC 822 9 defined information formats to carry out real time transmission task Request line uses a method field right after the URI and protocol version fields to indicate request type and ends with CRLF Carriage Return or Line Feed The request can be divided by spaces but not Carriage Returns or Line Feeds can be used unless when reaching the end of the request Via Via indicates path of route request Via portion explains origin route request time route destination and
59. f descriptions To find out just point your mouse over the parameter Features GT8 has the following features e It supports SIP MGCP protocols e It supports route selection it can route a call or direct it to the internet according to the called number e t supports RADIUS based CDR protocol e It supports gain adjustment to FXS FXO ports e t supports the intrusion into NAT through a STUN server e t supports traditional terminal devices including phones fax and PBX e t supports a variety of supplementary services such as All forward Forward No Answer Forward Busy Line Call waiting and Distinctive Ring etc e It can obtain static IP address or capture mobile IP address through DHCP and PPPoE e t supports the traditional fax service using T 30 and T 38 formats e GT8 with FXO ports e t supports the following sinaling protocols e SIP Compliant to RFC 3261 and TISPAN e MGCP e It supports the following codec e G71 e G 723 1 e G 729A e GSM PRODUCT INTRODUCTION e LBC e G 168 Echo Cancellation DTMF RFC2833 and T 38 Hardware Platform Physical Figure 0 1 GT8 Front View Reset button RST Power indicator PWR If lit power is on Ethernet port indicator If lit it is in operation FXS FXO indicators The port number is lit when in use ose Figure 0 2 GT8 Rear View www greatel net 9 PRODUCT INTRODUCTION Power plug in 10 100 baseT Ether
60. g number that starts with 8620 will be routed to the second FXS line Another example FXS 021 ROUTE IP 228 167 22 34 5060 FXS 020 ROUTE IP 61 234 67 89 5060 This means a call to the called number from an FXS that starts with 021 will be routed to IP address 228 167 22 34 while a call from an FXS that starts with 020 will be routed to IP address 61 234 67 89 IP CPN 1 3 5 ROUTE NONE 50 www greatel net Function Description This means a call from an IP address with calling number that start with 1 3 4 and 5 will not be routed Set up the FXS Ports This is applicable only to GT8 that have FXS ports One GT8 can have up to eight FXS lines Each line is configured the same way You can customize the configuration according to real life situation The following is a sample configuration Click the FXS Config link on the left side of Figure 4 1 Then click FXS 1 The FXS Settings screen displays as shown in Figure 4 17 5 Function Description FIS Settings Line Number FES 1 Phone Number Registration n Display Name Password Originating Restriction Off Call Waiting Off Call Holding off Call Forward off Caller ID On CID On Call Waiting off Anonymous Call off Hotline off Delay Hotline off No Disturb off Speed Dial Off Fashion Ring Off Reverse Battery Off DDI Line off Maint enance off Call Control Reset No control y All Forward Number Busy Forward Number
61. iOOS ici 72 Backup Agent Config cusco tdi ete ese 75 B rder Proxy Contig a oi a 76 EMS Opos la ein 78 Bill Optional ici gust iin i ea E O Edd A is 78 LOFT MIO ENEO E E AEA O N AAA E E EA 81 Call Status Informat A A E ee 81 Resources SA NN 82 Message Information mena rt 82 Error OMA AE 83 Startup Information eee ceseecseeeeesecseeeesseseeeecaceecescsaceessaessceeseassscessecesssaeaecessesaeesesaseateaes 83 Clear Message Information oin a E A EEE E on ana EP Aaea 83 System Toole rerin RN 84 Restore Factory Setting c ccshecsccsescssacsececssttncesventcsewiasee cusbissens kub ETit oka aS EEEE SEE eSEE KEETIS ESAS 84 Software U PdA E a aE a RA REAN ER E A ae A EERS 84 Change Pas Won E OEE E A E R A E see 85 Restart Gateway enron n a E E EE O E a E E EE R 86 Ia CGI o ESEESE E EE EEEE EE EE T 86 Ey A EE es erate 86 APPENDIX 00 A io 87 Factory Default Settings ee eeesecsesecsesceeeecseseseneseeeescseneesescneneceescncneceeessceeceeesaceeneceescaeneeeteeneneseters 87 GIOSS AMY ii coi 90 DHCP Dynamic Host Configuration Protocol oo ceccscesesetetenseeeeceeeceeeeneneeeeeeaenens 90 DSP Digital Signal Processing oo ceceesescsesesseseseseceeeeseseneeeeseseneeeeeceeneceeecneneeeeeeseaees 90 RTP Real Time Transport Protocol oo cccccccccsssssecseseseseseeeeseseseceeecsesecenscseneceneesenens 90 DTMF Dual Tone Mullti Frequency oo ccc ceceecseseseeeceeeeseseneeeeseneneeeeeceeneeeeecneneeeeeesenees 91 www greatel net 5 sp
62. ife span of the GTS It is strongly recommended that user control the environmental temperature www greatel net J www greatel net Preparation for Installation between 0 40 C and humidity between 5 95 none condensing Dust Control and Air Flow Dust falls on the GT8 might cause intermittent failure in electrical connections It may cause long term damage to GT8 will cause equipment failure and shorten equipment life span Therefore GT8 needs to have ample air flow in front of the GT8 air intake and outtake for proper heat exhaust Interference and Lightening Hazard GT8 may experience various types of EMI hazards in operation and its performance may be impacted To reduce those hazards it is suggested that e Donot install GT8 close to high power wireless equipment RADAR transmission site and high frequency high electric current devices e GT8 amp comes with Level 2 lightening protection Its operation site requires Level 1 lightening protection e GT8 must have its own power source and should be electrical interference free e Ensure proper grounding Installing GT8 When installing the GT8 please make sure GT8 is secured and has ample space for air flow Inspecting GT8 and Its Accessories After the installation preparation is completed the shipping package can be opened to examine all the items in the package The list of items for the GT8 is shown in Table 2 1 Table 0 1 GT8 Basic Config
63. ing for CPN from the FXS that starts with 3 send 183 48 www greatel net Function Description CODEC means the encoding and decoding method of the CPN CDN followed by the actual name of the codec For example PCMU 20 16 PCMU is the codec method 20 meaning every 20ms 16 is the length of echo cancellation If echo cancellation is not enabled a 0 will append at the end automatically like PCMU 20 0 indicating echo cancellation is disabled For example IP 6120 CODEC PCMU 20 16 This means for CDN from an IP address and starting with 6120 use codec PCMU 20 Echo cancellation length is 16ms RELAY is one function of IP dialing For example IP 010 RELAY 17909 This means for CDN from an IP address and starting with 010 dial 17909 first 2 Route Exchange One route consists of five sections Origination Number Action Destination and Destination Information Routing table routes the number from an origination to the destination Origination can have the following values IP FXS and FXO IP can be any IP address a specified IP address and a specified IP address plus the port number FXS and FXO can be a specific line number for example FXS1 FXO2 or FXS 1 2 etc Number can be the calling number or the called number Default is the called number If it is the calling number add CPN before the number as the identifier The number can use any digit between 1 to 9 X etc just like the
64. ions on endpoints www greatel net 27 www greatel net Function Description In the All Wildcard field select yes or no to indicate if GT8 will put the fixed prefix when it registers such as If Wildcard and All Wildcard are yes the gateway will deal with all wildcard End Of Line Using In the End Of Line Using CR field select yes or no to indicate if GT8 will use CR as line stop symbol when sending messages If set to no CRLF will be used Quarantine Default to Loop In the Quarantine Default to Loop field select yes or no to indicate how GT8 will handle events when there is no response for requirements If set to yes gateway will report continuously all events of this requirements when it receive a requirement if set to no gateway will response only once for each requirement Default Package Don t Send Name In the Default Package Don t Send Name field select yes or no If set to yes the gateway will reply to the default package without a package name if set to no it will reply to the default package with a package name Always Enable 1st Digit Timeout In the Always Enable 1 Digit Timeout field select yes or no to indicate how GT8 will handle events when there is no timeout during the required time If set to yes the gateway will report timeout according to the settings when the caller does not dial a phone number after going off hook Onhook don t Delete Connection In the Onhook don t Delete Conne
65. is 0 Backup Agent Config Click Advanced Config gt Backup Agent Config from the left pane The following displays 0 Note For information on how to use Submit and Default see most used buttons Backup Agent Config Call Agent 1 Call Agent 2 Call Agent 3 Call Agent 4 Call Agent 5 6 T 8 9 Call Agent Call Agent Call Agent Call Agent Call Agent 10 Figure 0 24 Backup Agent Config screen Call Agent 1 10 Set call agent IP address and port number No default value e Use between IP address and port number 75 Function Description e Address can be either IP address or domain name If using domain name the user must set DNS server parameters in Network Settings page and enable the DNS service e Sample format of fully qualified addresses 202 202 2 202 2727 callagent com 2727 Border Proxy Config To connect to user agents we also need to gather information about border agent registration server and local network domain name and IP address Customer can be in different locations and settings are all depending on their locations and local networks Click Advanced Options gt Border Proxy Config from the left pane The following displays 0 Note For information on how to use Submit see most used buttons Singnal Encrypt off Y RIP Encrypt None T38 Encrypt ore Border Proxy Server Local Port 4660 Enc
66. k management workstation notifying it that some event that fulfills the proposition has occurred Nat IP Address T60 Function Description If gateway is within the private network and the network outside the NAT is public you can map the IP obtained from SDP message to a fixed IP No default value a Note You can search the IP address from the following websites www ipchicken com www showmyip com www whatismyip com www myipaddress com and wwww whatismyipaddress com Nat Refresh Time In Nat Refresh Time field enter the time interval in seconds to refresh NAT status This request is send to the STUN Server This value is used when NAT Alive is enabled or when requesting STUN services Nat Keep Alive Select yes to keep it alive or no not to keep it alive STUN Select on to turn on STUN service or off to turn off STUN service STUN Server In STUN Server field enter the IP address of the STUN Server A STUN server can send requests as well as generate responses STUN server normally runs in public network and therefore is stateless If this field is empty the default STUN server will be used 10 NAT Network Address Translator Network Address Translation an Internet standard that enables a local area network LAN to use one set of IP addresses for internal traffic and a second set of addresses for external traffic A NAT box located where the LAN meets the Internet makes all necessary IP address tran
67. lete Connection no Notify Instead Of 401 402 no Using L Package Handle FXO no Using Configured Digit Map no Figure 0 6 MGCP setting screen EIKI KIKIKI KI EIKI lt i Ki MGCP Port In the MGCP Port field enter GT8 gateway MGCP port number example 2427 You can use any port number as long as it is not the same as other port numbers Call Agent In the Call Agent field enter the call agent address and port number Address and port number should be separated by Address could Call Agent Call Agent also known as Media Gateway Controller controls the Media Gateway In MGCP a call agent primarily handles all the call processing by linking with the IP network through constant communications with an IP signaling device for example an SIP Server or an H 323 gatekeeper Call Agent is comprised of the call control intelligence and a media gateway boasting the media functions for example conversion from TDM voice to Voice over IP Media Gateways feature endpoints for the Call Agent to create and manage media sessions with other multimedia endpoints Endpoints are sources and or sinks of data that can be physical or virtual For creating www greatel net 26 Function Description be IP address or domain name If you use domain name you should invoke DNS service and set parameter of DNS server in the Network Config page A complete sample configuration is like this 202 202 2 202 2727 callagent com 2727
68. lient servers Each client server is connected to the central DHCP server which gives the network configuration of each client including the IP address gateway and DNS server information DSP Digital Signal Processing Adjust and filtrate digital frequency RTP Real Time Transport Protocol RTP is an Internet protocol standard that specifies a way for programs to manage the real time transmission of multimedia data over either unicast or multicast network services RTP is defined as working one to one or one to more which can provide real time RTP usually using UDP User Datagram Protocol to transfer data but RTP also works for TCP Transmission Control Protocol or ATM Asynchronous Transfer Mode There are 2 ports when a program starts a RTP communication one for RTP and one for RTCP RTP does not address resource reservation and does not guarantee quality of service for real time services The data transport is augmented by a control protocol RTCP to allow monitoring of the 90 Function Description data delivery in a manner scalable to large multicast networks and to provide minimal control and identification functionality RTP and RTCP are designed to be independent of the underlying transport and network layers The protocol supports the use of RTP level translators and mixers RTP port refers to sending and receiving port RTP provides support for media data packetization and real time transmission Every RTP
69. ller control mode The default value is 60 seconds and the valid range is from 60 to 180 Advanced IP Options Click the Advance Config link on the left side of Figure 4 1 Then click IP Config The IP Optional screen displays www greatel net 66 www greatel net IP Optional RIP Jitter Param 1 RIP Jitter Param 2 2833 Payload Type Reserved Payload Type RIP Event Duration RIP Drop SID RIP Media Function RTP Accel SDP Global Connection SDP Using NAT IP Failure Play Busy IP Failure Goto FXO VAD Activate G 723 1 Rate DSP Speed DSP Driver IP TOS Packet Time ms Redundancy Change Port ECM Mode Dective NSF Modify Jitter Size Receive Gain gree eye eel ecu genes a ee coe Send Gain Sa Figure 0 22 IP Optional screen RTP Jitter Param1 RTP Jitter Param2 2833 Packet Type Function Description Default is 50 It is recommended that you do not change this value Default is 3 It is recommended that you do not change this value 67 Function Description In the 2833 Packet Type field enter a value from 97 to 127 This parameter is used for transmitting 2833 packet type The default load type is 97 Reserved Payload Type Enter a value from 97 to 127 This is the RTP load type when using the iLBC codec Default is 97 RTP Event Duration ms When gateway detects DTMF events and if RFC2833 is ena
70. m System Tools gt Restore Factory Default in that the latter restore the default settings for the whole system When the restoration is successful you will be prompted by The settings are successfully restored Please restart the gateway You need to click OK to confirm the action System Configurations Click System Configuration link on the left of Figure 4 1 and you will see what is shown in Figure 4 2 System Settings Software Version Rev ete ts Waal Hardware Version Rev 1 0 1 M 8 45 4 Kernel 1 DSP Version Rev 1 8 133 0x2502 RIP Port Min 10000 RIP Port Max 11000 First Digit Timeout s 15 Inter Digit Timeout s 15 Critical Dgt Timeout s 6 DTMF Method 2833 Default Codec 6723 30 PCMA 20 Echo Cancellation off So Figure 0 2 System Configuration Interface www greatel net 20 www greatel net Function Description Software Version The Software Version field value is automatically detected You do not need to change this field Hardware Version The Hardware Version field value is automatically detected You do not need to change this field DSP Version The DSP Version field value is automatically detected You do not need to change this field RTP Port Min and Max In the RTP Port Min field enter the minimum value of sending and receiving RTP port This is a required field It is recommended that you enter
71. mer to define and enable the forwarding feature when the line is busy To use this feature the customer must first sign up for the call forwarding service Disable No Answer Forwarding The default function key for this feature is 62 For example To forward calls to 5618881680 when nobody is answering the calls the enable key is 62 and the disable key is 62 a To enable CT Ee www greatel net Function Description Go off hook Dial 62 On hearing the dialing tone dial 5618881680 Dial to end Go on hook b To verify Go off hook Dial 62 On hearing the forwarded number go on hook c To disable Go off hook Dial 62 Go on hook Cancel Call Waiting This allows the customer to disable the call waiting function when a call is in progress to avoid interruption The default function key is 64 This feature works for only one call To completely remove call waiting please refer to section 4 9 Enable Do Not Disturb When this feature is enabled the customer will not hear the ringing tone when a call comes in The caller will hear busy tones The default function key is 72 To use this feature the customer needs to first sign up for the Do Not Disturb services Please refer to section 4 9 Disable Do Not Disturb This will restore the normal call handling The default function key is 72 Set Speed Dial The default function key is 74 This allows the customer to use a t
72. n a SIP network are identified by unique SIP addresses A SIP address is similar to an e mail address and is in the format of sip userlD gateway com The user ID can be either a user name or an E 164 address Users register with a registrar server using their assigned SIP addresses The registrar server provides this information to the location server upon request When a user initiates a call a SIP request is sent to a SIP server either a proxy or a redirect server The request includes the address of the caller in the From header field and the address of the intended callee in the To header field The following sections provide simple examples of successful point to point calls established using a proxy and a redirect server Over time a SIP end user might move between end systems The location of the end user can be dynamically registered with the SIP server The location server can use one or more protocols including finger rwhois and LDAP to locate the end user Because the end user can be logged in at more than one station and because the location server can sometimes have inaccurate information it might return more than one address for the end user If the request is coming through a SIP proxy server the proxy server will try each of the returned addresses until it locates the end user If the request is coming through a SIP redirect server the redirect server forwards all the addresses to the caller in the Contact header fi
73. n key 40 www greatel net Function Description Set up Busy Forward Click the Supplementary link on the left side of Figure 4 1 Then click Busy Forward The Busy Forward Settings screen displays as shown in Figure 4 11 Busy Forrard Settings Figure 0 11 Busy Forward Settings Screen This screen is used to enter forwarding numbers for Busy Forward feature subscribers or to display during operation the forwarding numbers entered by the end users Calls that come on busy lines will be forwarded to those numbers only when the end users sign up for the Call Forwarding services and when they enable this feature using the function key Set up No Answer Forward Click the Supplementary link on the left side of Figure 4 1 Then click No Answer Forward The No Answer Forward Settings screen displays as shown in Figure 4 12 Ho Answer Forward Settings Figure 0 12 No Answer Forward Setting Screen This screen is used to enter forwarding numbers for No Answer Forward feature subscribers or to display during operation the forwarding numbers entered by the end users Calls that get no answers will be forwarded to those numbers only when the end users Zl Function Description www greatel net sign up for the Call Forwarding services and when they enable this feature using the function key Set up Fashion Ring Click the Supplementary link on the left
74. n to be carried across network boundaries Session management provides the ability to control the attributes of an end to end call www greatel net 29 Function Description SIP Settings SIP Port 4321 SIP Proxy softswitch com 5063 SIP Registrar 192 168 24 42 5061 Registration Expires s 35 SIP Domain Name 192 168 25 92 Authentication Mode Per Gateway Auth w User Name 33338888 Password dddddddd Sa Figure 0 7 SIP settings screen SIP Port In the SIP Port field enter the number of SIP local port The default value is 5060 Local port number could be set at will as long as it doesn t conflict with the other port numbers in the system SIP Proxy In the SIP Proxy field enter the address and port number of the Proxy The address and port number is separated by a colon The address can be in either IP address form or domain name form When adopting domain name form it is necessary to invoke DNS service in the Network Setting page and set the parameter of DNS server The complete and valid setting is as following 201 30 170 38 5060 and softswitch com 5060 SIP Registrar In the SIP Registrar field enter the address and port number of the SIP Registrar The address and port number are separated by a colon Like other VoIP protocols SIP is designed to address the functions of signaling and session management within a packet telephony
75. n using SIP Protocol The same features are provided by the proxy server when using MGCP Protocol There is no need for configuration Setting up the Feature Keys Click the Supplementary link on the left side of Figure 4 1 Then click Feature Code The Feature Code Settings screen displays see Figure 4 9 You can set up all the supplementary feature keys from here The general rule is xx for enable i e dial the key plus any two digits that represent the feature and xx for disable i e dial the key plus any two digits that represent the feature The screen shows all the features with their default values You can replace the default with any numbers you like www greatel net 35 www greatel net Function Description Feature Code Settings Enable 411 Fwd Disable 411 Fwd Enable Busy Fwd Disable Busy Fwd Enable No Answer Fwd Disable No Answer Fwd Cancel Call Waiting Enable Do Not Disturb Disable Do Not Disturb Set Speed Dial Speed Dial Prefix XEK Listen IP Address HH Set Fashion Ring Listen To PPPoE IP Enable Fashion Ring Cancel Fashion Ring Listen Fashion Ring SURI Figure 0 9 Feature Code Setting Screen Enable All Forwarding This allows the customer to define and enable forwarding all calls function The default function key is 60 To use this feature the cus
76. nable or off disable Speed Dial Select on enable or off disable Fashion Ring Select on enable or off disable Reverse Battery Select on enable or off disable If on the line will send a reverse signal upon call connection and the accounting system starts fee calculation Reverse Battery Signaling Loop signaling in which battery and ground are reversed on the tip and ring of the loop to give an off hook signal when the call receiver answers Note Reverse battery signaling may be used either for a short period or for the duration of a call to indicate that it is a toll call www greatel net 54 www greatel net Function Description DDI Line Select on enable or off disable to use the Direct Dialing In DDI function Default is off Maintenance Select on or off to indicate to turn the power on off for this line Default is off Call Control Reset Caller Control Calling Party Control is to indicate that the Calling Party has hung up It will release a line at once If Called Party has hung up but Calling Party has not hung up it will release FXS line between 60 seconds and 180 seconds according to the set up in Release Timeout No Control All Forward Number In All Forward field the number set up in section Set up All Forward will display You can also enter a different number here to overwrite the previous number Busy Forward In Busy Forward field the number
77. name followed by a parameter value The command line is composed of e Name of the requested verb e Transaction identifier correlates commands and responses Values may be between 1 and 999999999 An MGCP entity cannot reuse a transaction identifier sooner than 3 minutes after completion of the previous command in which the identifier was used e Name of the endpoint that should execute the command in notifications the name of the endpoint that is issuing the notification e Protocol version These four items are encoded as strings of printable ASCII characters separated by white spaces i e the ASCII space 0x20 or tabulation 0x09 characters It is recommended to use exactly one ASCII space separator www greatel net MGCP Call Agent Call Agent also known as Media Gateway Controller controls the Media Gateway In MGCP a call agent primarily handles all the call processing by linking with the IP network through constant communications with an IP signaling device for example an SIP Server or an H 323 gatekeeper 04 www greatel net Function Description Call Agent is comprised of the call control intelligence and a media gateway boasting the media functions for example conversion from TDM voice to Voice over IP Media Gateways feature endpoints for the Call Agent to create and manage media sessions with other multimedia endpoints Endpoints are sources and or sinks of data that can be physical or virtual For
78. nd server Make sure the settings of both sides are consistent Secondary Server In Secondary Server field enter the IP address and the port of the secondary RADIUS server If no port is set then the default port 1813 will be used Key In Key field enter the share key for the communication between secondary RADIUS client and server Make sure the settings of both sides are consistent Timeout In Timeout field the default setting is 3 seconds Retries In Retries field enter re transmit times when the charging function is not responding The default setting is 3 seconds 80 www greatel net Function Description Log Information Call Status Information Click Log Information link on the left of Figure 4 1 Then click Call Info The Call Info page displays Call Info FXS 3 onhook N A FXS 4 onhook N A c call remote local codec state number Figure 0 26 Call Log Info screen status off on hook and ringing status ts timeslot d DSP This field shows the DSP chip used c channel This field indicates the channel of DSP call identify one call number which is a random number remote remote IP address followed by RTP port number local the local RTP port number codec encoding and decoding GT8 support the following codec G729A 20 iLBC 30 G723 30 GSM 20 PCMU 20 PCMA 20 state call state which indicates the current state It can be SEND DELIVERED PRESEN
79. net port FXS FXO ports a total of 8 ESO Table 0 1 GT8 Configuration Options GT8 4S FXS1 FXS2 FXS3 FXS4 Null Null Null Null GT8 8S FXS1 FXS1 FXS3 FXS4 FXS5 FXS6 FXS7 FXS8 GT8 4 FXO1 FXO2 FXO3 FXO4 Null Null Null Null GT8 4S 4 FXS1 FXS2 FXS3 FXS4 FXO1 FXO2 FXO3 FXO4 System Specifications Table 0 2 GT8 Specification Specification On hook Battery REN Equivalence ht short loop 1000 feet 3 for long loop 5000 Loop Current Loop Resistance Up to 188 O TO ee an Can stand up to 1000V www greatel net 10 PREPARATION FOR INSTALLATION To avoid any body injury and device damage please read this chapter carefully before the installation Safety Check Please follow the safety guidelines when installing GT8 e Keep away from wet group and heat e Ensure safe use of electricity e Ensure to connect all the interface cables correctly Installation Environment Temperature Humidity The GT8 installation room must maintain normal temperature and humidity If the room temperature exceeds the specified maximum temperature it will shorten the live of the electrical insulation material If the room humidity exceeds the specified humidity GT8 may experience electrical static shock and shrinkage of electric insulation material in the metal package It may also cause metal corrosion All these will drastically shorten the l
80. ntrol architecture where the call control intelligence is outside the gateways and handled by external call control elements The MGCP assumes that these call control elements or Call Agents will synchronize with each other to send coherent commands to the gateways under their control MGCP is in essence a master slave protocol where the gateways are expected to execute commands sent by the Call Agents The MGCP implements the media gateway control interface as a set of transactions The transactions are composed of a command and a mandatory response There are nine types of commands MGCP Commands MGC Media Gateway Controller MG Media Gateway MGC gt MG CreateConnection Creates a connection between two endpoints uses SDP to define the receive capabilities of the participating endpoints MGC gt MG ModifyConnection Modifies the properties of a connection has nearly the same parameters as the CreateConnection command MGC lt gt MG DeleteConnection Terminates a connection and collects statistics on the execution of the connection MGC gt MG NotificationRequest Requests the media gateway to send notifications on the occurrence of specified events in an endpoint MGC lt MG Notify Informs the media gateway controller when observed events occur MGC gt MG AuditEndpoint Determines the status of an endpoint MGC gt MG AuditConnection Retrieves the parameters related to a connection MGC lt MG Resta
81. o increase the strength of the signal Line Impedance A measure of the total opposition to current flow in an alternating current circuit made up of two components ohmic resistance and reactance and usually represented in complex notation as Z R ix where R is the ohmic resistance and X is the reactance It also refers 103 www greatel net Function Description to an analogous measure of resistance to an alternating effect as the resistance to vibration of the medium in sound transmission Signal Mode Signal mode refers to inserting a silence signal periodically into the voice stream Standard used in China specifies 450 Hz 350ms ON 350ms OFF means signal cycle is 700ms insert 350 ms signal plus a silence signal of 350 ms for each cycle Jitter Buffer Jitter is a major factor affecting the quality of IP calls Jitter buffer is a software process that eliminates jitter caused by transmission delays in Internet telephony VoIP network As the jitter buffer receives voice packets it adds small amounts of delay to the packets so that all of the packets appear to have been received without delays Voice signals are sequential by nature i e they must be played back in the order in which they were sent and the jitter buffer ensures that the received packets are in the correct order Without a jitter buffer to smooth the transmission data can be lost resulting in choppy audio signals There are two types of ji
82. om Connection Information after SDP Media Description SDP Using NAT Setup whether to use NAT address in out going SDP Default value is No e Yes Use NAT Address in out going SDP e No Use Local host IP address in out going SDP Y Notes This parameter works only when gateway is able to get an NAT address There are two ways to obtain NAT address a When gateway is using STUN function b When gateway starts to register and the 200 OK it gets from the registration server contains NAT information IP Failure Play Busy Select on or off to indicate to send or not busy tones when IP network doesn t connect IP Failure Goto FXO Select on or off to indicate to switch or not all calls to FXO port when IP network doesn t connect It is recommended that you set this parameter to on If IP network doesn t connect in order to protect router all IP calls go to PSSTN through FXO VAD Active 12 SDP Session Description Protocol SDP describes multimedia sessions for the purpose of session announcement session invitation and other forms of multimedia session initiation www greatel net 69 Function Description In the VAD Active field if you select yes the speech packet will not be sent out in the mute of the call and noise is added to the speech stream to replace the mute It is recommended that you set this parameter to yes to save the network bandwidth G 723 17 Rate In the G 723 1 Rate BPS field enter
83. one Off Time ms SBE Figure 0 20 FXO Optional Screen FXO Gain To PSTN Enter the volume increase into the PSTN Value range is 6 3dB Default is 3 5dB FXO Gain To IP Enter the volume increase into the IP Value range is 3 3dB Default is 0 FXO Impedance 1 Sending Gain or signaling gain When detected signals are not strong enough over the network we use signal gain parameter to increase the strength of the signal 14 Line Impedance A measure of the total opposition to current flow in an alternating current circuit made up of two components ohmic resistance and reactance and usually represented in complex notation as Z R 1X where R is the ohmic resistance and X is the reactance It also refers to an analogous measure of resistance to an alternating effect as the resistance to vibration of the medium in sound transmission www greatel net 62 Function Description Select an FXO impedance number Options include Complex Impedance 6000 and 9000 Default is 6000 FXO Relay Time In the FXO Relay Time field enter the delay time in sending out the digits to the PSTN from the FXO side The default is 400ms FXO Play ANN FXO hotline to FXS when FXS is busy FXO can play announcement On play Off not play Default value is off Ring Relay Select to enable 1 or disable 0 the function of relay the ring to FXS Digit On Time Enter any number from 80 to 150 This parameter spe
84. ped to support interactive two way communications over the Internet such as for 102 www greatel net Function Description voice VolP and videoconferencing The STUN client sends requests to a STUN server which is typically hosted by the service provider Unlike application layer gateways ALGs and Middlebox Communications MIDCOM which also support two way communications through NATs STUN requires no changes to the NAT RADIUS Remote Authentication Dial In User Service Remote Authentication Dial In User Service RADIUS is a client server protocol and software that enables remote access servers to communicate with a central server to authenticate dial in users and authorize their access to the requested system or service RADIUS allows a company to maintain user profiles in a central database that all remote servers can share It provides better security allowing a company to set up a policy that can be applied at a single administered network point Having a central service also means that it s easier to track usage for billing and for keeping network statistics Created by Livingston now owned by Lucent RADIUS is a de facto industry standard used by a number of network product companies and is a proposed IETF standard RADIUS Server RADIUS Server authenticates clients and returns corresponding settings Signal Gain When detected signals are not strong enough over the network we use signal gain parameter t
85. rameter SIP_REG_PASSWORD set with 08 04 14 37 00 821248 config c 2925 Category PROFILE 08 04 14 37 00 822364 config c 3033 INFO parameter PREFIX_LINE set with 8000 08 04 14 37 02 276352 config c 3033 INFO parameter MX8_HARDWARE set with FXS4 08 04 14 37 02 287762 get_kernel_info MKS Kernel Release 1 7 08 04 14 37 02 300583 app_start IP TOS Oxc a li aE Figure 0 30 Startup Info screen Clear Message Information www greatel net 83 www greatel net Function Description Click Log Info link on the left of Figure 4 1 Then click Clear Msg Log Now you can clear the information in Message Information System Tools Restore Factory Setting Click System Tools on the left of Figure 4 1 Then click Restore Factory Setting The following displays Factory Setting NOTE Push the button will change the gateway configuraion back to factory setting including network setting Figure 0 31 Restore Factory setting screen Click the Confirm button to restore default factory settings GT8 gateway has most parameters set to commonly used default value In most cases customers do not have to set the parameters for themselves See Index for details about factory default settings Software Update Click System Tools on the left of Figure 4 1 Then click Software Update The following displays 84 Function Description Software Upgrade Upgrade process
86. rdware Ad circ ssevseianhe ten E A EEE NEE E O Hoatee E E 33 DUNS E EPE TE EEE EEEE TT 33 DNS Primary Servi AS 34 DNS Alternate Servicios 34 PPPOE REA 34 Time Primary Server ssocirno siiri serois iioii iiei itine E Er LENEE sack suvdesduseuvacscessbinevdecessbenes 34 Timey Hermate SEVE eei e e E NE A ates O E e E so 34 TM A EE AEE EE ET 34 Tinterval EE E E T E A E E E E TEE 34 Time ZONE oan ere A E A E A A A E NAE ata AEEA ATA 35 Supplementary Features cccccccccescssescsesseseeseeeeseseeseeecseecseeecseeeceessesesseaeeseeecseeeceeesaeeeseeeseeeeseeesaeees 35 Setting up the Feature KeyS ooooooncnncnicnoonocconcononnnoncnnonoranonoonnon conc EE iE E NETE EEEE EE 35 Sel Up All Forward e orita oidor 40 Setup B sy Forward nai ia 41 Set up No Answer Forward coooonccociononnnoncononnnnnonnnnnoncononn nono nonncnnnnn enn canon canon none nn non n rn enana eran enan aria cannnnos 41 Setup Fashion Rio a ti 42 Setup Hotlm ada 42 Dialing Plan and Routing Table oo eee sseessssesssesseeesseeessecesseeseeesseeesseeesseeesseeesseeeseeaeeesseeerseeeeas 43 Setup the Dialing Platina toro iia 43 Setup the Routing Tablero cota as 44 Setup the FXS Ports co ia 51 Phone NUM at 32 RE IO at 52 Display Nao iii A E E EO E 53 O RON 53 Originating Restricton ieren ea a EE E A E A eee A eR 53 Call Waiting field isecrss irises siseses evicsstsxcesssuncscvncss iano Sae kauh E OKEE ASe EERE ESETET Eo SEKE aTi svessacnes 53 Goal SAO Lit E tii 53 call Forw rd ere
87. rtInProgress Signals that an endpoint or group of endpoints is taking in or out of service MGC gt MG Endpoint Configuration www greatel net 93 Function Description The first four commands are sent by the Call Agent to a gateway The Notify command is sent by the gateway to the Call Agent The gateway may also send a DeleteConnection The Call Agent may send either of the Audit commands to the gateway The Gateway may send a RestartInProgress command to the Call Agent All commands are composed of a command header optionally followed by a session description All responses are composed of a response header optionally followed by a session description Headers and session descriptions are encoded as a set of text lines separated by a carriage return and line feed character or optionally a single line feed character The headers are separated from the session description by an empty line MGCP uses a transaction identifier to correlate commands and responses Transaction identifiers have values between 1 and 999999999 An MGCP entity cannot reuse a transaction identifier sooner than 3 minutes after completion of the previous command in which the identifier was used The command header is composed of e Acommand line identifying the requested action or verb the transaction identifier the endpoint towards which the action is requested and the MGCP protocol version e A set of parameter lines composed of a parameter
88. rver provides time calibration control and synchronization for equipments running in the network Caller ID Detecting Using FXO to detect caller ID from the PSTN and use this number as the originating number for the IP call SNMP Simple Network Management Protocol The Simple Network Management Protocol SNMP is an application layer protocol that facilitates the exchange of management information between network devices It is part of the Transmission Control Protocol Internet Protocol TCP IP protocol suite SNMP enables network administrators to manage network performance find and solve network problems and plan for network growth Two versions of SNMP exist SNMP version 1 SNMPv1 and SNMP version 2 SNMPv2 Both versions have a number of features in common but SNMPv2 offers enhancements such as additional protocol operations Standardization of yet another version of SNMP SNMP Version 3 SNMPv3 is pending SNMP basic components MIB MANAGEMENT INFORMATION BASES SMI STRUCTURE OF MANAGEMENT INFORMATION SNMP SIMPLE NETWORK MANAGEMENT PROTOCOL There are two ways to get data from managed network equipment one is polling only which engages the workstation all the time the other is interrupt based method which gets data periodically Both methods have their disadvantages The result is the combined method called trap directed polling This is probably the most effective way to gather managed network data
89. rvices DNS Alternate Server In the DNS Alternate Server field enter alternate GT8 DNS server address if you have turned on DNS services PPPoE In the PPPoE field select on or off to indicate to use PPPoE service or not e f you selected on in Step 11 you need to enter your user name in the PPPoE Username field e f you selected on in Step 11 you need to enter your password in the PPPoE Password field Time Primary Server In Time Primary Server field enter the IP address of your primary Time server Time Alternate Server In Time Alternate Server field enter the IP address of your alternate Time server Timeout In the Timeout field enter the time in minute allowed to locate the Time server If the server is not located within the time allowed GT8 will try to locate it again Interval 234 Function Description In the Interval field enter the time interval in minute at which GT8 will synchronize its time with the Time server Time Zone In Time Zone field select the GT8 location The following is the options are available for this parameter Midway Honolulu Anchorage Tijuana Denver Mexico_City Indianapolis Glace_Bay Buenos_Aires South_Georgia Cape_Verde London Amsterdam Cairo Moscow Muscat Karachi Almaty Bangkok Beijing Tokyo Canberra Magadan Auckland Newfoundland Tehran Kabul Calcutta Adelaide Supplementary Features The features in this section are enabled only whe
90. rypt Type UDP Encrypted v Encrypt Keyword Border Proxy Set whether signaling and RTP are using a border agent Default value is None Possible settings are None Signaling Signaling and RTP e None Do not use border agent e Signaling Only Signaling is going to use border agent e Signaling and RTP Both Signaling and RTP stream are using border agent Border Proxy Server 2 Border Agent Also known as Border Controller which normally includes Sign Proxy and Media Proxy function modules www greatel net 76 Function Description Set IP address and port number for border agent No default value Separate IP address and port number with a Local Port Local port number for border agent Default value is 4660 Local port number can be anything as long as it does not conflict with port numbers for other equipments Encrypt type Set encryption method Default value is None Note Encryption setting must be the same with what the border agent is using Possible options are e None TCP encryption HTTPU mode No encryption algorithm is used e Encrypted TCP encryption HTTPU mode Encryption algorithm is used e TCP Encrypted Encrypt signaling and RTP over TCP Also use encryption algorithm e TCP Not Encrypted Encrypt signaling and RTP over TCP but no encryption algorithm is used e UDP Not Encrypted Encrypt signaling and RTP over UDP but no encryption algorithm is used
91. s 3 FXO Advanced Default Settings FXO Gain 3 5 FXO Relay Time ms 400 Digit on Time ms 100 Digit off Time ms 100 Buy Tone Repetition 2 Busy Tone Parameter1 61485 Busy Tone Parameter2 0 Busy Tone on Time ms 350 Busy Tone off Time ms 350 FXS Advanced Default Settings FXS Gain 7 0 Hookflash Min ms 75 Hookflash Max ms 800 Hook Status Changes ms 50 Default IP Advanced Settings RTP Jitter Max Frame 50 RTP Jitter Min Frame 3 2833 Packet Type 97 Send Busy Tone for Network Breakdown off Switch to FXO for Network Breakdown on Generation of the Mute Compress and Comfort Noise yes G 723 1 Rate BPS 5300 IP Packet in Tos Field Ox0C T 38 on T 38 Data Frame Length ms 40 T 38 Redundancy Fram Number 4 T 38 Change UDP Port no T 38 Error Detect Mode off 89 www greatel net Function Description SIP Advanced Default Settings Response Default Port Using Received Port no Response Default Port Using Proxy Port no RTP Port Mapping no Replace 18x with 180 no CPN from Request Line no Response Do Not Check Via yes Use the Full Domain Name Information during Registering yes Keep the Original Contact Information no SIP VIA using NAT Information yes SIP TO adopt Domain Name Information yes Glossary DHCP Dynamic Host Configuration Protocol DHCP Dynamic Host Configuration Protocol is a network protocol used to assign TCP IP addresses to c
92. send out the detected number x a number of any length that starts with any number between 0 and 9 If the end user dials right after the number GT8 will stop number reception and send out the number before terminate dialing after receiving plus any two digits xx is mainly used to enable the supplementary services such as Distinctive Ring Do Not Disturb and Call Forwarding xx end dialing after receiving plus any two digits xx is mainly used to disable the supplementary services 2 8 xxxxxx a seven digit number that starts with any number between 2 and 8 This is used to terminate local call dialing 02XXXXXXXXX an 11 digit number that starts with 02 This is used to terminate long distance call dialing that starts with 02 013XXXXXXXXX a 12 digit number that starts with 013 This is used to terminate long distance cellular calls that start with 013 13XXXXXXXXX 11x an 11 digit number that starts with 13 This is used to terminate local cellular calls that start with 13 a three digit number that starts with 11 This is used to terminate emergency calls 9xxxx a five digit number that starts with 9 This is used to terminate special service calls 17911 send out the number right after receiving 17911 This serves as an example of terminating a special number Set up the Routing Table Click the Dialing Plan link on the left side of Figure 4 1 Then
93. set up in section Set up Busy Forward will display You can also enter a different number here to overwrite the previous number No answer Fwd Number In No Answer Fwd Number field the number set up in section 4 RR ARASHI will display You can also enter a different number here to overwrite the previous number Hotline Number 55 www greatel net Function Description In Hotline Number field the number set up in section Set up Hotline will display You can also enter a different number here to overwrite the previous number Speed Dial List In Speed Dial List field enter the Speed Dial Code number any two digits between 20 and 49 plus the actual number Multiple entries are separated by Example 20 3221860 21 7558888 22 5552525 Fashion Ring ID In Fashion Ring ID field the number set up in section Set up Fashion Ring will display You can also enter a different number here to overwrite the previous number Set up the FXO This is applicable only to GT8 that has FXS ports One GT8 can have up to four FXO lines Each line is configured the same way You can customize the configuration according to real life situation The following is a sample configuration Click the FXO Config link on the left side of Figure 4 1 Then click FXO 1 The FXO Settings screen displays as shown in Figure 4 18 56 www greatel net Function Description FIO Settings Line Number FXO 1 Phone Number 524542 Registra
94. slations 1 SDP Session Description Protocol SDP describes multimedia sessions for the purpose of session announcement session invitation and other forms of multimedia session initiation STUN Simple Traversal of UDPover NATs STUN Simple Traversal of UDP over NATs A protocol that allows applications to detect that a network address translation NAT is being used It can also detect the type of NAT and IP address assigned by it STUN was developed to support interactive two way communications over the Internet such as for voice VoIP and videoconferencing The STUN client sends requests to a STUN server which is typically hosted by the service provider Unlike application layer gateways ALGs and Middlebox Communications MIDCOM which also support two way communications through NATs STUN requires no changes to the NAT www greatel net 61 Function Description Advanced FXO Options Click the Advance Config link on the left side of Figure 4 1 Then click FXO Config The FXO Optional screen displays as shown in Figure 4 20 FIO Optional FXO Gain To PSTN 3 0 FXO Gain To IP o FXO Impedance Complex Impedance v FXO Relay Time ms 400 FRO Play ANN off Ring Relay 0 Digit On Time ms 100 Digit Off Time ms 100 Busy Tone Busy Tone Repetition Busy Tone Frequency 1 Busy Tone Frequency 2 Busy Tone On Time ms Busy T
95. stem performance Country ID 59 www greatel net Function Description In Country ID field select the country in which the gateway is operated and gateway will adopt different disposals according to different countries standards Forwarding Number Mode In Forwarding Number Mode field use the pull down menu to select Calling Party Number or Forwarding Number This determines if the calling party number or the forwarding number should be displayed in the last line For example if line 3221680 has call forwarding function and the forwarded number is 7558888 when line 5552525 calls 3221680 line 7558888 will display 5552525 if Calling Party Number is selected here if Forwarding Number is selected then line 7558888 will display 3221680 Fashion Ring Max In Fashion Ring Max field enter the maximum Fashion Ring file size and the highest Fashion Ring ID number Listen IP Select yes to allow the customer to hear the IP address by push or no not to allow SNMP Port In SNMP Port field enter the UDP port used by Simple Network Management Protocol SNMP provides a way to collect network management information from network equipments as well as a way for the equipments to report problems and errors to the network SNMP Trap Port In SNMP Trap Port field enter the UDP port used by SNMP Trap command The default value is 162 TRAP is one command of SNMP whose main function is to send alarm asynchronously to networ
96. tered in the Prefix field FXS 1 4 FXO 1 4 24 www greatel net Function Description For the FXS lines when the number is not a serial number or a serial number that is not incrementing at order you can manually enter the number for each FXS line This gives user more flexibility Under MGCP mode You can set the phone numbers either like shown in Figure 4 4a or in Figure 4 4b Phone Number Settings Phone Number Settings Hardware FXS8 Hardware FXS8 de aaln 0 Prefix FXSI faaln 0 FXS 2 aaln 1 FXS3 laaln 2 EXS4 aana oo FXO1 laaln 4 FX02 faaln 5 FX03 laaln 6 FXO 4 FXO4 laaln 7 set errr Figure 0 4 a Figure 0 4 b Under the SIP mode You can set the phone numbers either like shown in Figure 4 5a or in Figure 4 5b Phone Number Settings Phone Number Settings Hardware FXS8 Hardware FXS8 os E 2004 FXO2 gt 2005 FXO3 xo 206 8 FXO4 xos 2007 t S Figure 0 5a Figure 0 5 b MGCP Setting 25 Function Description Click the MGCP Config link on the left of Figure 4 1 You will see Figure 4 6 MGCP Settings MGCP Port 2427 Call Agent Domain Name gw1 nr com Default Packages L D G Persistent Line Event L HD L HU Wildcard no All Wildcard no End Of Line Using CR no Quarantine Default to Loop no Default Package Don t Send Name no Always Enable 1st Dgt Timeout no Onhook Don t De
97. thenticate wholly according to gateway User Name Set the User Name field if registered as Per Gateway Reg or Per Gateway Auth if registered as Per Endpoint do not set this parameter Password Registration Expires In order to control client side every register message has a certain stored period If the message is modified in that period which mean it works for user otherwise Registrar will consider the message is not useful any more so it will be deleted www greatel net 3 Function Description www greatel net In the Password field enter soft switch authentication password which can be digits or characters The password is case sensitive If registered as Per Gateway Reg or Per Gateway Auth you need to set this parameter if registered as Per Endpoint you do not need to set this parameter Network Configuration Click the Network Config link on the left side of Figure 4 1 The Network Settings screen displays Network Settings Host Name M 8 voip Default Gateway 192 168 250 11 DHCP off Ethernet IP Address 192 168 250 36 Subnet Mask 255 0 0 0 Hardware Address 00 OB A9 30 01 AC DNS n v DNS Server 192 168 2 11 DNS Server 192 168 2 11 PPPoE PPPoE Off PPPoE Username eeeeeee PPPoE Password ggggggge TIME TIME Server 192 168 250 12 TIME Server 192 168 250 13 Timeout m 15 Interval
98. tion Off Display Name LTTTTTTT Password Kkkkkk Originating Restriction On Hot line On Dialtone f Echo Cancellation Detect FSK On Reverse Battery on Hotline Number 21 Figure 0 18 FXO Setting Screen Phone Number In Phone Number field enter the phone number that is set up in section 4 3 Registration In Registration field select on to register or off not to register Display Name In Display Name field enter the content to display in the outgoing calls You can enter up the 30 characters FXO lines that have name display capability can display what is entered here Password In Password field enter the registration password if you selected on in Step 3 Y Note The functions beyond this point only apply to SIP protocol When using MGCP protocol there is no need to set them up as the set up does not work A www greatel net Function Description Originating Restriction In Originating Restriction field select on to indicate the line can only receive calls but nat initiate calls or off no restriction Hotline In Hotline field select on enable or off disable Dialtone In Dialtone field select on enable or off disable This function is disabled once the Hotline function is on Echo Cancellation In Echo Cancellation field select on enable or off disable Detect FSK In Detect FSK field select on enable or off dis
99. to add 010 to all the CPN from FXS2 Another example FXS CPN6120 ADD 8888 meaning to add 8888 to CPN from the FXS that start with 6120 REPLACE means to replace the number followed by the number to be replaced to For example FXS CPN88 REPLACE 2682000 meaning for a CPN 46 www greatel net Function Description from an FXS that starts with 88 replace it with 2682000 REPLACE cross replacement means to replace the number corresponding to the called number or calling number For example FXS 12345 REPLACE CPN 1 8621 This means remove the last one digit then add 8621 at the end of the calling number corresponding to the called number from an FXS that starts with 12345 FXS CPN13 REPLACE CDPNO O This means add 0 at the head of the called number corresponding to the calling number from an FXS that starts with 13 FXS 12345 REPLACE CPN1 This means remove one digit at the head of the calling number corresponding to the called number from an FXS that starts with 12345 FXS 12345 REPLACE CPN 5678 This means add 5678 at the head of the calling number corresponding to the called number from an FXS that starts with 12345 FXS 12345 REPLACE CPN 5678 This means add 5678 at the end of the calling number corresponding to the called number from an FXS that starts with 12345 Notes CPN and CDPN the appointed digit stream If CPN and CDPN behind REPLACE the CPN means calling number and the CDPN means calle
100. tomer must first sign up for the call forwarding service Disable All Forwarding This feature allows the customer to disable the All Forwarding service For example To forward all calls to phone number 5614888888 the enabling key is 60 The disenabling key is 60 a To enable Go off hook Dial 60 Upon hearing the dialing tone enter 5618888888 Dial to end Go on hook b To verify 36 www greatel net Function Description Go off hook Dial 60 Upon hearing the forwarded number dial to end Go on hook c To disable Go off hook Dial 60 Go on hook Enable Busy Forwarding This allows the customer to enable the forwarding feature when the line is busy The default function key is 61 To use this feature the customer must first sign up for the call forwarding service Disable Busy Forwarding This allows the customer to disable Busy Forwarding function The default function key is 61 For example To forward all the calls when the line is busy to phone number 5614601688 the enabling key is 61 The disenabling key is 61 a To enable Go off hook Dial 61 Upon hearing the dialing tone enter 5614601888 Dial to end Go on hook b To verify Go off hook Dial 61 Upon hearing the forwarded number dial to end Go on hook c To disable Go off hook Dial 61 Go on hook Enable No Answer Forwarding This allows the custo
101. tter buffers dynamic and static A static jitter buffer is hardware based and configured by the manufacturer A software based jitter buffer is called a dynamic jitter buffer and can be configured by the system or network administrator RTP Payload Type RTP Payload type indicates payload format including codec clock rate channel etc For example type 2 indicates payload in this packet is using ITU G721 codec sample rate is 8000Hz and using single channel SID Silence Information Description SID describes parameters to apply silence compression and comfort noise generation Voice Proxy 704 www greatel net Function Description This is primarily used to resolve problems of accessing networks for example ADSL Cable Modem Ethernet Proxy etc using a faux hidden IP or internal IP It enables endpoints to access the network without having to change network settings For IAD using public network and real IP address voice proxy is not needed Symmetric RTP RTP receiving end and sending end are using the same port Kernel Kernel refers to the Linux Operating System GED gateway uses Linux OS SDP Session Description Protocol SDP describes multimedia sessions for the purpose of session announcement session invitation and other forms of multimedia session initiation G 723 1 Voice CODEC G 723 1 dual rate speech coder performs compression and decompression of 8 kHz speech signals It encodes 16 bit
102. uration and Accessories 12 Preparation for Installation Model Number Qty Description GT8 4S GT8 85 1 Each GT8 may have 4 FXS ports or 8 GT8 4 GT8 4S 4 FXS ports or 4 FXO ports or 4 FXS FXO ports You need to examine carefully to make sure what you receive is what you paid for MX PWR10 V01 00 GT8 DC adaptor 12V 1 54 MX CBL00 0005 1 5 meter Ethernet cable 1 5m in length MX CBLO0 0011 1 GT8 power cord Y Note Itis suggested that users carefully examine the content of the shipping package according to the sales contract If there is any question or problem please contact our customer service department www greatel net E INSTALLATION Installing GT8 Since GT8 is small you can put it to a clean and flat workspace Please make sure it is secured and has ample space for air flow Connecting the Cables Connecting the Ethernet Port GT8 has one 10 100 Base T Ethernet port with RJ45 connector It is equipped with LED status display Besides voice packet this port can also manage maintain and control the information flow The Ethernet Cable needs to be carefully made to ensure IP data and voice quality The following is the Ethernet cable making scheme Step1 A user can use a proper cable peeling cutter to peel away 3cm skin of a CAT 5 cable What is left is shown in Figure 3 1 www greatel net J s www greatel net n Y E Installation p Figure 0 1
103. ure 4 1 Then click Error Log The Log Info page displays You can check all the errors logons exits and overtime web access information in this page 08 04 14 37 00 818142 set IP address 127 0 0 1 for hostname lt localhost gt 08 04 14 37 02 309539 system_net_param_read unknown network param USE_FRING off 08 04 14 37 04 236239 slow_hw_scan 490 ether link up speed 286 duplex 0 08 04 14 37 07 850206 login admin 0 IP 192 168 2 166 1 08 04 14 38 30 979492 login admin 1 IP 192 168 2 198 3 08 04 14 50 44 526325 timeout logout 1 IP 192 168 2 198 3 08 04 15 00 33 326335 timeout logout 0 IP 192 168 2 166 1 08 04 15 35 08 488832 appthread cxx 576 web get error rc 10 08 04 15 35 17 228731 appthread cxx 576 web get error rc 10 08 04 15 35 18 168722 appthread cxx 576 web get error rc 10 08 04 15 35 18 968739 appthread cxx 576 web get error rc 10 08 04 15 35 22 047156 login admin 0 IP 192 168 2 198 1 Figure 0 29 Error Info screen Startup Information Click Log Info link on the left of Figure 4 1 Then click Startup Info The Log Info page displays You can check all the startup information of the gateway from this page 5 config c 2925 Category OPTIONAL 08 04 14 37 00 711423 config c 3033 INFO parameter IP_TOS set with 0x0C 08 04 14 37 00 712730 config c 3033 INFO parameter SIP_PRODUCT
104. will take approximately 5 minutes Do not navigate frorn this screen after pressing Upgrade button After software upgrade is completed system automatically initiate could start reboot WEB connection will be lost and message like The page cannot be displayed may be indicated Re login 1 minute after such message shown on the screen FTP server User Name Password Filename Figure 0 32 Software Update screen FTP Server Please enter the IP address or domain name of the FTP server which is used to update the software Filename Please enter the filename of the software version which you need to update otherwise the software will be updated to the latest version Note No operation is permitted during update period The Reboot message will pop up when the update is successful Click the OK button the software will switch to Reboot page automatically After clicking the Reboot button please turn off power manually and restart the gateway Change Password Click System Tools on the left of Figure 4 1 Then click Change Password The following displays www greatel net 8 www greatel net Function Description Change Password Old Password New Password Confirm New Password Operator Password operator SUBMIT Figure 0 33 Change Password screen Only an administrator has the authority to changes password The first three fields are use
105. with 268 and followed by any number from 0 to 1 or 3 to 9 The search for a matching number follows the principle of shortest and quickest For example x www greatelnet A www greatel net e Action Function Description equals all numbers xx equals all two digit numbers 12x equals all three digit numbers that start with 12 defines the processing method and the actual information that has been processed It can have three values KEEP Keep means to keep the number Another number goes after it If that number is positive it means to count the number from the front if the number is negative it means to count the number from the backward For example FXS 02168640585 KEEP 8 This means to keep the last eight digits of this called number from the FXS that is 68640585 REMOVE Remove means to remove the number Another number goes after it If that number is positive it means to count the number from the front if the number is negative it means to count the number from the backward For example FXS 021 REMOVE 3 This means to remove 021 if the called number from an FXS starts with 021 ADD Add means to add digits before or after the called number Another number goes after it If that number is positive it means to add before the number if the number is negative it means to add after the number For example FXS1 CPNX ADD 021 FXS2 CPNX ADD 010 This means to add 021 to all the CNP from FXS1
106. wo digit code from 20 to 49 for dialing the complete digits To use this feature the customer needs to sign up for speed dial services Speed Dial Prefix This defined the identifiers for speed dial The default function key is Before using the speed dial the customer must first dial these two digits For example The speed dial code for phone number 5613221680 is 20 and the speed dial prefix is a To enable speed dial 38 www greatel net Function Description Go off hook Dial 74 On hearing the dialing tone dial 20 plus 5613221680 Dial to end b To verify Go off hook Dial 74 On hearing the dialing tone dial 20 plus to end On hearing the complete digits go on hook c To use the speed dialing Go off hook Dial plus 20 d To disenable Go off hook Dial 74 On hearing the dialing tone dial 20 plus to end Listen IP Address This allows the customer to hear the IP address of his phone line The default function key is Enable Line Search This allows the customer to hear the phone number of this his phone line The default function key is 00 Listen to PPPoE IP Address This allows the customer to hear the gateway PPPoE IP address The default function key is 01 Enable Fashion Ring This allows the customer to set the ring tones to his liking The default function key is 80 Cancel Fashion Ring This restores the ringing tone to norm

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