E401 user manual_Ed 1.0
Contents
1. o el el CO CO m des See eege ee ee ege eg See ee ege e ee eege eg CO E o ED e 000 Figure 1 Card dimensions Page 1 iD UI September 2011 Ed 1 0 An IP network in which the E401 model is used for building a simple IP intercom can be schematized as follows VoIP PBX SIP SIP Telephones N Ethernet Loudspeaker lt ER Microphone Indicating led Controller CG L Dc User call INTERCOM Figure 2 IP intercom scheme with E401 board An IP intercom system built with the board E401 is connected through the Ethernet interface to a VoIP network in which it is possible to have a PBX SIP telephones and one controller By controller we understand a computer that executes software capable of communicating with the E401 board for managing it and for sending audio In order to implement the IP communication functionality there are two alternatives or independent working modes explained in detail in Chapter 2 1 1 1 Proprietary mode Two protocols are used for communicating the controller with E401 the control and establishment of the communication uses an EQUITEL proprietary protocol and the audio is transported by a standard protocol used in VoIP communications Using an industrial standard for voice transportation is very important since the VoIP communication between the E401 and standard2. 1 00 Apply changes Figure 10 E401 Web server main page On the left side we can find the access menu to the different server pages e Home Main page in which all the information about the system can be found e Network Page for configuring the network e Work Mode E401 is capable of working with any of the two operating modes already explained but not at the same time It is in this page where we select the operating mode e Audio Contains parameters concerning the audio configuration and prerecorded messages download e Security Allows changing the credentials for accessing the unit e Firmware Page for loading remotely the new firmware supplied by EQUITEL e Reset Restores the factory default parameters and reboots the unit remotely EQUITEL E401 user manual Page 15 le UI September 2011 Ed 1 0 4 1 General information In the main page which is shown in the Figure 10 we can see the system general information parameters Some data are fixed and they cannot be modified such as the serial number firmware version or the equipment MAC address The equipment identification name can be configured and afterwards we must click on the Apply Changes button in order to save it 4 2 Network configuration In this page the network configuration values existing at that moment are shown It is also possible to modify them The IP assignment is static by filling in the necessary fields as shown in
3. E401 requires a power supply of 3 3 V DC that will be also supplied through the connectors corresponding pins SIP is communications initiation protocol defined in the standard RCF 3261 and nowadays widely used in IP intercom systems EQUITEL E401 user manual Page 3 PO N ra u E September 2011 Ed 1 0 1 2 Pin out description The E401 pin out function is shown below Figure 4 E401 board upper side and a connector detail from the bottom one E401 has two 40 pin 1 27 mm connectors The tables below describe the possible external connections sorting them out according to their functionality and indicating the corresponding connector Gp and GP in Figure 4 Led Power connection E401 must be powered at 3 3V DC The power supply must provide at least 150 mA to the board Pin No connector No Description 1 2 CON 1 Power 3 3 V 1 2 CON 2 Power 3 3 V 39 40 CON 1 Ground GND 39 40 CON 2 Ground GND EQUITEL E401 user manual Page 4 iD UI September 2011 Ed 1 0 1 2 2 Network connections E401 board has two Ethernet 100Base T interfaces supporting MDI and Auto MDIX Auto MDIX interface changes automatically from MDI to MDI X and vice versa This allows the connection to any cable straight or cross over regardless of a direct connection of the module to a computer or toa switch hub E401 itself has all the necessary components for supporting the dual interface Ethernet 100Base
4. 2 Input Output 16 35 CON 2 Input Output 17 36 CON 2 Input Output 18 Each one of the inputs outputs are signals which are directly connected from the microprocessor to the connector pin of E401 Depending on the use to be given to the input output it must be conveniently isolated with a circuit protection SS ey TTENTION 1 2 7 Factory default values recovery In order to recover the network and system access factory default settings two external push buttons connected to the following board inputs are needed the connections are made as per the circuit shown in Figure 7 Pin No Connector No Description 15 CON 2 Manual RESET IN 22 CON 1 Button SW1 3 3V 3 3V RESET 4k7 Swi 15 CON2 22 CON1 2 D 4k7 se Figure 7 External circuits for factory default values recovery This is the method to follow for recovering the network configuration user and password to access the system 1 Press the reset button RESET IN in Figure 7 2 Afterwards and while you keep the previous button pressed press the SW1 one see Figure 7 Both buttons must be pressed for around 7 seconds EQUITEL E401 user manual Page 8 iD UI September 2011 Ed 1 0 1 3 Connection of basic elements for manufacturing and IP intercom The board is especially designed for being used within an IP intercom system However some external components must be added This is a detailed scheme of the co
5. 4 7 ATTENTION EQUITEL E401 user manual Page 17 le UI September 2011 Ed 1 0 4 4 Audio configuration The audio configuration page is depicted in Figure 13 Through this page the input and output audio levels can be configured At the same time we can activate the functionality of the acoustic echo canceller and update the prerecorded audio messages S T E401 VoIP audio system audio Update the files for audio local busy and offline tones Aert audio Levels Speaker Level Mic Level Acoustic Echo Canceller Settings NLMS Filter Enable Filter Audio In Apply changes Figure 13 Audio configuration e Audio Levels Modification of E401 input and or output audio levels They correspond to the internal amplifiers and are independent from the further possible gain we may obtain when including the external amplifiers for microphone and loudspeaker see point 1 2 4 o Speaker Level Mute Very Low Low Normal High Very High and Maximum o Mic Level Mute Very Low Low Normal High Very High and Maximum e Acoustic Echo Canceller Settings Indicates whether any of the two echo canceller possibilities are to be used in order to improve the audio quality Both filter types may be used individually or together o NLMS Filter Enable NLMS adaptive filter activation or not activation o Filter Audio In Activation or not of the incoming audio filtering It is im
6. IP phones becomes very easy In this case the EQUITEL demo application supplied can be used for controlling several E401 units and sending audio from a computer EQUITEL E401 user manual Page 2 iD UI September 2011 Ed 1 0 1 1 2 SIP mode E401 model incorporates a SIP agent that allows sending and receiving calls directly from an IP phone 1 using the SIP protocol and a PBX In this operating mode the use of the controller is optional However it can supervise the calls made with the SIP protocol and register them Regardless of the operating mode established for the audio communication it is necessary a control software for managing remotely the E401 auxiliary inputs and outputs as eseeseseseseesesseeesese Levels converter HI EQUITEL E401 3 3V RJ 45 RJ 45 Figure 3 E401 block diagram The module E401 has two 40 pin connectors The general purpose inputs outputs are accessible through them as well as the microprocessor UART signals from which if treated conveniently we can obtain RS 232 RS 422 and RS 485serial data bidirectional audio and access to the Ethernet network in dual mode by adding two RJ 45 connectors The audio output gives up to 500mW power over a 5 Q load Therefore it is recommended to add an amplifier to this output which will be connected to the loudspeaker The audio input can be directly connected to a microphone Furthermore we can add a pre amplifying input
7. and the microphone should be connected to the board through the corresponding amplifiers Pin No Connector No Description 5 CON 2 Audio IN 7 CON 2 Audio IN 6 CON 2 Audio OUT 8 CON 2 Audio OUT 1 2 5 Reset connection E401 has an input signal RESET IN that can be used to reboot the system should any strange functioning be detected There are two ways to activate this RESET IN input signal 1 Using an external push button It must be of the normally open type This means that the reset activation will be carried out by joining the corresponding line with ground see scheme connection in Figure 7 2 Remotely via web see chapter 4 7 On the other hand it has an output signal RESET OUT which it is active at a low level With it it is possible to restart peripheral devices supporting a reset input During the system start up the reset controller activates this signal for a while Afterwards it puts the signal to a high level so that it may operate normally Pin No Connector No Description 15 CON 2 Manual RESET IN 16 CON 2 RESET OUT The RESET OUT output signal can be activated as follows 1 Automatically It enters to the low level when the system is rebooted by means of the RESET in input signal 2 By software being activated independently from the restart input signal EQUITEL E401 user manual Page 6 iD UI September 2011 Ed 1 0 1 2 6 Input output c
8. beginning or at any time after having configured a change 1 The controller may consult the configuration of all the available inputs outputs by sending to E401 the TCP message QRYPPORTCONFIG 2 E401 sends the message PPORTCONFIG back where it is included an organized list of the addresses I input O output X not used and the initial status of each one of them 1 0 if configured as output X if this pin is not used or if it is configured as input 3 1 2 Configuration change When a controller changes the configuration of the I O it is saved and it will remain unchanged every time the E401 is rebooted 1 The controller may configure the initial inputs outputs address and value by using the command CONFIGPPORT followed by the organized status list that wants to be programmed and its initial value 2 E401 will answer with the corresponding ACK in this case ACK_CONFIGPPORT 3 1 3 Writing on the outputs 1 In order to write remotely the values of the pins configured as outputs the controller sends the command WRITEPPORT followed by an organized list with the desired value 1 0 X 2 E401 will answer with the corresponding ACK in this case ACK_WRITEPPORT 3 1 4 Inputs reading 1 The controller may consult the values of the pins configured as inputs by sending the command READPPORT 2 In this case E401 will answer with the message PPORT followed by an organized list of va
9. call is not accepted by E401 it informs the controller with the message of DISCONNECTEDCALL EQUITEL E401 user manual Page 12 le UI September 2011 Ed 1 0 2 2 4 Audio communication When a call initiated by any of the links progresses correctly E401 opens the audio channel to listen to input RTP packets and sends back its audio packets The audio communication using E401 uses the RTP protocol with a G 711 A codification and a sampling frequency of 8 kHz 2 2 5 Audio communication closing In order to close an audio communication previously established it is the SIP telephone with which the communication has been established who sends the order to E401 2 3 Audio prerecorded messages E401 is capable of playing two prerecorded audio messages in order to indicate the call status situations described in the previous paragraphs e Message for indicating that the call enquiry has been received calling tone e Message for indicating that the destination address is not available offline tone The playing of these messages and tones is done automatically when making a call Should the call enquiry be received by the control centre Proprietary Mode or by the SIP telephone SIP Mode the message of calling tone is emitted Should the call not be received or should it not be answered after a while the message of offline tone is emitted There are a few messages prerecorded by default but it is
10. possible to record the others through the web server d The messages must have the extension system pcm and the following format in order to be accepted by the e G 711 A codification e Sampling rate 8 KHz 8 bits per sample one channel EQUITEL E401 user manual Page 13 September 2011 Ed 1 0 Chapter 3 Programmable inputs and outputs control In this chapter it is explained how to configure and to control remotely the 18 general purpose inputs outputs that E401 has available These inputs outputs are physically accessible in the board connector pins as it is detailed in the point 1 2 6 Through them it is possible to connect other external devices Regarding the two balance ones one of them is dedicated and configured as input for call button and the other one as output for the active audio indicating led The connections are detailed in the point 1 2 6 3 1 I O control messages E401 behaves as a TCP server in the port 7000 and accepts one client s connection This way and by means of EQUITEL proprietary protocol the inputs outputs configuration and consult is made sorted out according to the list in point 1 2 6 using the following prerecorded messages which are detailed the annex document Equitel E400 Series Communications Protocol SE Query configuration When the system is booted for the first time the available I O have a configuration by default It can be consulted at the
11. that as many extensions as E401 modules to be used can be registered as well as many extensions for the corresponding telephones 2 Configure the telephone or telephones so that they are registered in the switchboard with the assigned extension It is very important the telephones to have the capability of using the audio codec G711 A which is the one used by the modules E401 3 Configure the E401 modules to get them also registered in the PBX with the extension assigned to each one 4 In each one of the E401 modules configure the extension of the number to call in push to call application It is possible to transfer the call to another telephone should the extension configured in E401 not answer by means of an adequate configuration of the PBX 5 Once all the units have been configured it must be checked in the switchboard that all of them are actually registered and therefore capable of communicating 2 2 2 Sending a call When the call button is activated and the module E401 is correctly registered in the PBX the enquiry for establishing communication using the SIP protocol begins 1 If the telephone to which you wish to call is registered available and accepts the same audio codification as E401 the latter begins to play the prerecorded message of calling tone which indicates call received It keeps like this until the call is picked up or the waiting time configured in the PBX has passed by 2 Shoul
12. the following figure Once the parameters are established the changes must be saved by clicking the button Apply Changes located at the bottom of the page Clicking this button makes the system reboot After that we may access the Web server again by using in the browser the new IP address S T E401 VoIP audio system nwo Network Work Mode IP Address 192168 1 70 Audio Security Subnet Mask 255 255 255 0 Gateway 192 168 1 254 DNS Server Settings Preferred DNS Address Alternate DNS Address Apply changes IMPORTANT If you make changes in the networking parameters the current connection will be lost The new configuration will be saved and the device will be reset You must connect with new parameters after a few seconds Figure 11 Network configuration 4 3 Operating mode configuration In this page we can select the alternative for implementing the IP communication functionality As we have explained previously E401 offers two alternative operating modes e Proprietary Mode The communication establishment is done by an EQUITEL proprietary protocol please check point 2 1 EQUITEL E401 user manual Page 16 PO N ra u E September 2011 Ed 1 0 e SIP Mode The calls are established by using the SIP protocol That is in this mode E401 behaves as a SIP phone please see point 2 2 SHAHI E401 VoIP audio system Work Mode Work Mode Securit
13. 22 S4 Ge ge E 22 5 2 Factory coniiguration EENEG eene 22 EQUITEL Manual t cnico del equipo E401 iil le UI September 2011 Ed 1 0 Chapter 1 Description 1 1 General description EQUITEL E401 user manual E401 is an OEM VolP based board designed for telephony intercom and audio distribution manufacturers with the following characteristics Double Ethernet 100Base T interface adding two external RJ 45 connectors One bidirectional audio channel transmission with quality improvements like the acoustic echo dynamic cancellation Integrated SIP agent that allows a communication with external telephones with a switchboard One serial data channel LVTTL levels adaptable to the desired standard by using an external levels converter Up to 20 inputs outputs to be used as per the customer s requirements They are programmable for the control and connection of other external devices System configuration remotely update of the vocal messages and firmware via Web server Robust construction with operating temperature range from 40 2C to 74 2C Power supply 3 3 V DC Consumption lower than 500 mW Mechanical format PCB board of 92 x 74 mm see Figure 1 with two 40 pin connectors each one 92 01 fn wg CH 00000 L cpoo oooooooo OO 0 op CH DDDUUe Od Io CIO O e D 2 00 g 0 d 7397 mm 00000000 000 70e0 ggg 00000 o D o joo o
14. IP intercom systems OEM VolP card for audio transmission i o N E 3V a R ck Co L vad Lt ES cil 3 b YNIHOD LIN 6L0L INS8SLLXH TIN88LLXH esing asing senha e 2 gr Fra gt x kat i e gt Ges pn MN ET Zi el vi fl y ww wW s y ue DR y gt TERES akan aa a a ft MDC DGND 9 kb d via A EN 1 8 MDIO m Sse RR Ka 2 GO a a m ce Gmm e a OM e K 2 n We eben RG Beg em 2 J Em G an oan ST EN A zg W e 4 Bi sg oe FR OR p ee Se QUIT Lins a i ra RK E401VIOT N gem Bel geg gt ep ay a ki d Ge V C S o DU AnRaRAR RS teehee VNIHO LAPGLOL Jai m D DW Oomer m 3 co J D e gt DGNO Piit fF Z0MHz This document is the technical reference of the EQUITEL E401 model an OEM VoIP module for intercom and telephony systems This documentation is valid for the following equipment versions o Hardware version V101 o Firmware version V1 00 Equipos De Telecomunicaci n Optoelectrdnicos S A Zaragoza Spain September 2011 Ed 1 0 KN EH E September 2011 Ed 1 0 E401 Technical manual Index Bei he ele de EE 1 Ll et e EE 1 LLL POD B11 018 ee ne eC E mene ence mn A 2 e D GC UNC EE 3 Le Ge Foy UI EE 4 tea alo Se cle ne WL EE 4 L22 NGWO ae CR 5 1 23 Seraldata ee e 6 eee Ono EEN 6 r2A 0 2 ease gig a O E creme Tee erect res wee
15. T except the two RJ 45 connectors Pin No Connector No Description Fbherner Interface A 9 CON 1 Transmission 13 CON 1 Transmission 11 CON 1 Ground transmission 10 CON 1 Reception 14 CON 1 Reception 12 CON 1 Ground reception 15 CON 1 Link led Pin No Connector No Description Ethernet Interface B 3 CON 1 Transmission 7 CON 1 Transmission 5 CON 1 Ground transmission 4 CON 1 Reception 8 CON 1 Reception 6 CON 1 Ground Reception 16 CON 1 Link led The E401 board has two outputs informing about the Ethernet network connection Each one of these outputs Link Led can be connected externally to the led as follows EQUITEL E401 user manual 15 CON1 16 CON1 220R 220R LED LINK LED LINK Eth A Eth B X Figure 5 External circuits for connecting the link LED Page 5 iD UI September 2011 Ed 1 0 1 2 3 Serial data connection E401 board has a serial data port for LVTTL levels which can be connected to devices compatible with this level or convert it to the desired standard by means of external level transceivers Pin No Connector No Description 17 CON 1 UART data reception 19 CON 1 UART data transmission 1 2 4 Audio connection E401 has a bidirectional audio channel which is transmitted over IP networks By connecting a 5 Q load to the audio output we can obtain up to 500mW power Both the external loudspeaker
16. a keyboard the functionality would be the same but the only difference is that call enquiry would be originated by the keyboard reading 2 1 Proprietary mode 2 1 1 Connection with the controller The communication between E401 and the controller is established by an EQUITEL proprietary protocol see the annex document Equitel E400 Series Communications Protocol E401 behaves as a TCP server in the port 7000 and accepts the connection of a single client simultaneously 2 1 2 Sending a call Once the call button is activated the process of sending the call to the switchboard begins according to the following steps 1 E401 sends a TCP message to the controller indicating the push button activation and the call request The message is DEMCALL 2 The controller will answer with the corresponding ACK ACK DEMCALL 3 When the previous ACK message is received E401 begins to play the prerecorded message calling tone which indicates call received for 1 minute maximum and waits to receive the audio activation message from the central 4 Should the ACK not be received or if one minute has passed by without getting the audio activated E401 will launch twice the prerecorded message offline tone which means destination not available 2 1 3 Audio communication establishment When a controller wants to establish audio communication with E401 either as a result of a call enquiry or asynchronou
17. d the E401 or the destination telephone not be registered or should there be any problems with establishing the communication busy line non compatible audio codification or if the acceptance waiting time has expired the prerecorded message offline tone will be placed twice indicating destination not available 3 Parallel to this process of establishing communication and if there is a controller correctly connected to the network E401 sends it TCP messages indicating the facts taking place enquiry for sending a call DEMCALLSIP enquiry for calling at the destination indicated in the message OUTCALLRINGING 4 If due to whatever reason E401 sends the message offline tone it informs the controller of the non communication establishment with the message DISCONNECTEDCALL 2 2 3 Call reception Any of the SIP telephones can communicate with any of the E401 units if they are correctly registered in the PBX It is only required to call to the corresponding extension 1 When E401 receives an enquiry for establishing communication it immediately accepts it as long as it has not detected any problems for that such as an audio codification not supported by the module or that it is already in communication with another telephone 2 E401 sends a TCP message to the controller should there be any one connected indicating that there is an input call INCALLRINGING 3 If for whatever reason this
18. e recover both the network configuration and the other factory settings 2 Ifthe network information has been lost and it is not possible to access the E401 board via Web it must be followed the procedure described in the point 1 2 7 with which it is restored the network configuration and the access credentials EQUITEL E401 user manual Page 22
19. e system This page allows to do it remotely and quite comfortably just by pressing the Reboot button e Restore to Factory By pressing the button Restore the factory default settings are restored It must be taken into account that the unit IP address comes back to the initial one 192 168 1 1 Should it had be changed the connection with will be lost S T E401 VoIP audio system Reboot Device Network Work Mode This action will reboot the device Security Reboot Reset M Restore to Factory This acction will restore all parameters to the factory default settings Restore Figure 17 Factory configuration and reboot EQUITEL E401 user manual Page 21 SHAU Chapter 5 Maintenance September 2011 Ed 1 0 5 1 Firmware update In EQUITEL we work every day to improve our systems in a close collaboration with our customers As a result of this continuous improvement process either to correct mistakes or to add new functionalities new firmware versions are launched They can be uploaded very easily through the IP network The update in E401 is done via its own web site so that this process can be as comfortable and simple as possible 5 2 Factory configuration recovery If it is required to recover the internal factory configuration there are two different options depending on the method and the parameters restored 1 Via the web server as described in the point 4 7 In this case w
20. een ere 6 Bee eet e EE 6 12 6 Input output connections iaieiiea ei iiaiai 7 1 2 7 Factory default values recovery ssssssesssseeerssssreesssreresssrreresssreressererossereesereresserressseeeessseereess 8 1 3 Connection of basic elements for manufacturing and IP Intercom 9 Chope PO E 10 21 POU IS EAT NGS serpme EREE ER A RE ARRENE EE EARE a EAE ERO ER 10 2 1 1 Connection with the controller E 10 ZL E e UI a ea neiors ecenotscententint ae enanboa ance ce nema 10 2 1 3 AUCIO communication establis hMmeN T EE 10 2 1 4 Audio communication cloSing esssseeesesrersssererssssrresssrersssssreresssreresserersssrosssereresseeressseeresss 11 Pe 1 e EE 11 Zad Basicconiieuratonoi ihe Ee E 12 e e EE EE 12 Leo ee EE 12 E EE e e COnN ON RE 13 2493 A diocommu nicaton QONE EE 13 2 3 Audio prerecorded an E 13 Chapter3 Programmable inputs and outputs Control 14 et WO deel EE 14 ALL uey e ee EE 14 A EE ag ele Ale EE 14 GE Waiting on the outputs eenaa a a 14 ZLA emcee 8 e nee nT nT eee e Teeter Tye Reteer eeeTT oe nenenen rer ny ar erent tere eran reer emt rite 14 SiMe Change inthe UI TS EE 14 Chapter 4 Configuration by using Ubewebserver 15 41 GeneralinformatiOM ME 16 42 Networkconheuration EEN 16 43 peritinge mode CO OSIM EE 16 Aa Audio conie ur O E 18 A5 Credentials e n ET 20 Ao FNE upaa gee wemne ete Steer ee rene eter teen T eee e are E 20 4 7 Factory COMO UIA LION and reset EEN 21 chapters Ey E ne EE
21. ge 19 le UI September 2011 Ed 1 0 4 5 Credentials configuration This is the page where E401 Web server access password can be changed SHUI E401 VoIP audio system Home rom Administrative Setup Work Mode Auge Login Username admin Security ecurity Firmware a Reset Apply changes Figure 15 Password change 4 6 Firmware update Should it be necessary EQUITEL will supply a file for updating the equipment firmware The update process is very easy see Figure 16 It is only needed to select the file sent to this page by clicking the button Examinar from the dialogue box File to upload and then press Upload File The update process will take a few minutes Afterwards E401 will reboot itself automatically Depending on the update it might be necessary to update as well the configuration parameters Should this be the case EQUITEL will provide the necessary documentation about how to do it along with the firmware l Upload Firmware WARNING This enables you to upload new firmware to the device Figure 16 Firmware update EQUITEL E401 user manual Page 20 le UI September 2011 Ed 1 0 4 7 Factory configuration and reset In the page named as Reset it is possible to carry out two actions e Reboot Device In case of malfunction or after changing some important configuration parameters such as operation mode it is necessary to reboot th
22. lues that correspond to the inputs configured as such 3 1 5 Change in the inputs status 1 When any of the pins configured as inputs changes its status E401 sends a message CHANGEPPORT indicating which inputs have changed 2 The controller will answer with the corresponding ACK in this case ACK_ CHANGEPPORT EQUITEL E401 user manual Page 14 September 2011 Ed 1 0 Chapter 4 Configuration by using the web server The board E401 has an integrated web server that allows accessing the configuration parameters remotely by connecting to a Web server By default the equipment is configured with the following network access parameters IP 192 168 1 1 Subnet mask 255 255 255 0 Gateway 0 0 0 0 not used The method for accessing E401 Web server is detailed below e Configure the computer IP so that it is in the same subnet as E401 Make sure that there are no more units in the network with the same IP address e Initiate the browser and type http 192 168 1 1 in the address bar e A dialogue box asking for the user name and password will pop up Initially the user name is admin and the password admin e Once the data are correctly introduced you will access the main page SHH E401 VoIP audio system Home Work Mode Home System ID E401 MAC 00 06 3B 01 1A 6C Security Serial Number 0OSA8SE Firmware Version
23. nnections and the minimum necessary elements for manufacturing an IP intercom with a board E401 RJ 45 A RJ 45 B 3 3V oN SI CY EZ J3 Cam o 7 Microphone cpoo 3 3V ZN 90 20 no90 00000 2 00000000 000 LED LINKA RESETIN d LED LINKB 3 3V 22R Loudspeaker S 220R CALL button LED ng Figure 8 Manufacture of an IP intercom with an E401 board In the figure 8 we detail the location of each connector in the board and their pin number to which the corresponding external element must be connected In order to build an intercom what we need to add at least is as follows e Power supply e Audio input e Audio output e Ethernet connection e Call button e Active audio indicating led e Reser button The functionality of each one of the connection pins is described separately in chapter 1 2 EQUITEL E401 user manual Page 9 le UI September 2011 Ed 1 0 Chapter 2 Functionality In this chapter we explain the functionalities of each one of the operation modes in which E401 can be configured as well as the events sequences taking place in each case and the prerecorded audio messages we have used In both operation modes it is explained how the system works considering that the board E401 is destined for IP intercom and using just a single push button We support our explanations with the scheme in Figure 2 This is meant to simplify the explanation Should we have
24. ogue or cell phones This protocol encompasses the management of multimedia services interchange session initiation modification and finalization SIP is a very complex protocol since it covers different aspects The application we have given to this module is that of VoIP calls management We have implemented a small part of this protocol so that a very simple functionality of incoming call automatic response and push to call associated to an available input can be made PBX SIP E401 E401 E401 E401 SIP Telephones Controller optional Figure 9 Basic network for E401 using SIP E401 can be registered in a PBX SIP as a further extension for making and receiving calls By using this system it could be possible to implement a VoIP network using E401 and without the need of any controller just with a SIP PBX and one or several telephones However we could optionally add a controller to this network see Figure 9 consisting on a computer with the necessary software The demo application supplied by EQUITEL can be used In SIP operation mode it only supervises the established calls in order to register them and controls the auxiliary outputs and inputs EQUITEL E401 user manual Page 11 le UI September 2011 Ed 1 0 2 2 1 Basic configuration of the SIP network The procedure to configure a network using E401 and SIP operation mode is as follows 1 Configure the PBX so
25. onnections E401 board has up to 20 general purpose inputs outputs for other external devices control and connection Two of them are specially conceived for being used in IP intercom systems 1 Push button Input signal for connecting the normally open call button 2 LED AUDIO Output signal for connecting a led which indicates the audio status In stand by mode it remains at a low level It will be at high level while audio is active Pin No Connector No Description 29 CON 1 Push button 30 CON 1 LED AUDIO indicates active audio The following scheme details how the connections to the push button and led must be made 3 3V 30 CON1 220R PUSH button Ki AUDIO LED 22R 29 CON1 Figure 6 External circuits for connecting the PUSH button audio LED The direction input output and the initial status 1 0 of each one of the balance 18 inputs outputs are remotely configurable by using the EQUITEL proprietary protocol as depicted in Chapter 3 PIN No Connector No Description Control order No 6 7 8 3 CON 2 Input Output 4 CON 2 Input Output 17 CON 2 Input Output 18 CON 2 Input Output 9 19 CON 2 Input Output 10 EQUITEL E401 user manual Page 7 iD September 2011 Ed 1 0 20 CON 2 Input Output 11 21 CON 2 Input Output 12 31 CON 2 Input Output 13 32 CON 2 Input Output 14 33 CON 2 Input Output 15 34 CON
26. portant to consider that in order to be able to establish any audio configuration change no communications must be running That is we must adequately close the audio depending on the operation mode afterwards we have to change the desired parameters and press the button Apply Changes in order to save the changes As shown in the point 2 3 although E401 includes some default audio prerecorded messages the users can upload others of their choice This can be done by pressing the Upload Audio button available in the audio configuration page see Figure 13 EQUITEL E401 user manual Page 18 CQUITEL September 2011 Ed 1 0 In the following figure we can see the dialogue boxes for the audio load selection belonging to each one of the two functionality messages explained in the paragraph 2 3 We select the audio file of the message we want to update by pressing the button Examinar from the dialogue box File to upload Then press the button Upload File to save it in the E401 flash memory Network Audio CQUITEL E401 VoIP audio system Home Upload Calling Tone Work Mode This enables you to upload an audio file for using it like Calling Tone Security Reset Firmware File to Upload File Upload Offline Tone This enables you to upload an audio file for using it like Offline Tone Upload File Figure 14 Prerecorded audio messages upload EQUITEL E401 user manual Pa
27. sly the former sends a message of STARTAUDIO to E401 that includes the IP address and the audio destination port that the system must send When E401 receives this order opens the port 30000 to listen to the incoming RTP packets and sends what it generates to the indicated address and port E401 answers the controller with the corresponding ACK ACK STARTAUDIO_OK ACK _STARTAUDIO_NOK indicating whether it has been able to activate the audio or not In case of communication failures in order to avoid E401 to remain with the audio constantly activated a refresh order from the controller is sent Every time the order STARTAUDIO is received the audio communication will remain active for a maximum of 2 minutes The audio communication using E401 uses the protocol RTP with a codification G 711 A and a sampling frequency of 8 kHz EQUITEL E401 user manual Page 10 le UI September 2011 Ed 1 0 2 1 4 Audio communication closing To close an audio communication previously established the controller must send the message STOPAUDIO E401 will send the corresponding ACK ACK_STOPAUDIO_CLOSED ACK _STOPAUDIO_NOCLOSED This way the controller will know whether the audio is closed or not 2 2 SIP mode E401 incorporates a SIP agent that allows receiving and making calls directly to IP telephones If using an appropriate PBX even accepts anal
28. y Firmware ill Account SIP Settings SIP Proxy IP 192 768 1 11 SIP Port ar SIP Registration Timeout E secs ran Authenticated Usser T010 Authenticated Password fi oo Destination Number 2000 IMPORTANT After applying all settings you must reset the device Figure 12 SIP mode operation configuration In case of having selected the SIP mode see Figure 12 it is necessary to configure some parameters of the SIP agent that E401 has integrated e SIP Proxy IP It is the IP address or PBX name e SIP Port It is the PBX SIP port the standard one being 5060 e SIP Registration Timeout Expiry time in seconds for registering the unit in the PBX e Authenticated User It is the extension assigned to E401 in the PBX e Authenticated Password It is the password configured in the PBX for the assigned extension e Destination Number It is the SIP phone extension to which we wish to call in the implementation of the push to call functionality After configuring the SIP agent and should it be necessary to modify the parameters the button Apply Changes must be clicked in order to save the changes The operation mode sets the functioning of E401 module in the start So when a change is made in this page and the button Apply Changes is clicked the system must be rebooted to guarantee the correct functioning of the system This can be done remotely through the Web server as explained in the point
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