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Vortex EF200 User Guide

1. 0 0 Figure 2 Typical EF200 Connections e Connect the TO PHONE jack of the EF200 to an analog telephone handset using a standard telephone cable e Connect the EF200 s To LINE jack to the telephone line in your wall using a standard RJ11 modular telephone cable e Connect the To AEC jack to the input of the local room audio system This may be the input to an AEC such as the REMOTE INPUT of the EF400 e Connect the FROM AEC jack to the output of the local room audio system This may be the output of an AEC like the EF400 s REMOTE OUTPUT e Connect the TO REMOTE jack of the EF200 to the input of a video CODEC or other four wire transmission interface e Connect the FROM REMOTE jack of the EF200 to the output of a video CODEC or other four wire transmission interface e If RS 232 remote control is desired connect the RS 232 REMOTE CONTROL port of the EF200 to a remote control device such as an RS 232 interface to a touch panel or a COM port on a personal computer e Connect the external power supply to the POWER SUPPLY INPUT jack of the ASPI Digital The Sound of DSP 9 Note Note Note Caution EF200 USER M ANUAL EF200 In order to add a phone call to a connection either or both the AEC or REMOTE con nectors of the EF200 must be connected to other equipment To dial a number the EF200 needs either the RS 232 port or the analog telephone handset to be connected Only one of these is neces
2. In the following example the remote control device requests the automatic gain con trol status of the EF200 with Device ID number 6 Then it enables the automatic gain control feature of the same EF200 Acknowledgment mode is enabled AO 6AGC AO 6AGCO AO 6AGC1 AO 6AGC1 Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE AH ENABLE DISABLE AUTO HANGUP MODE When auto hangup mode is enabled the EF200 will automatically hang up when call progress tones indicate that the other end of the line has been disconnected For instance if the person on the other end hangs up on you the EF200 will automatically hang up as well Call progress messages do not have to be enabled for this feature to work If entry and exit tones are enabled see TONEE an exit tone will be played to indicate that the EF200 has disconnected its phone interface The factory default setting for AH is 0 off Remote Commands The following commands can be sent by the remote control device to enable or dis able auto hangup mode Turn off auto hangup mode Turn on auto hangup mode Toggle auto hangup mode on or off Request status of auto hangup mode EF200 M essages The following messages are sent by the EF200 in response to an AH command or in response to any AH command when acknowledgment mode is on Auto hangup mode is currently off Auto hangup mode is currently on Example In the following example the remote
3. Auto answer is currently off In the following example the remote control device requests the auto answer status of the EF200 with Device ID number 12 Then it toggles the auto answer status turning it on Acknowledgment mode is enabled Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE ACKMOD ENABLE DISABLE ACKNOWLEDGMENT MODE Remote Commands EF200 Messages Example If acknowledgment mode is enabled the EF200 will acknowledge each command it receives by repeating the status of the command that was sent This may be used for verifying that each command is received and recognized by the EF200 When acknowledgment mode is turned off the remote control device can always request the status of a parameter by sending a query command such as AA When acknowledg ment mode is enabled a query command only generates one message in response Since acknowledgment mode reports the status of the command rather than simply echoing back the command you get a verification of the command s effect The factory default setting for ACKMOD is 1 on The following commands can be sent by the remote control device to enable or dis able acknowledgment mode Turn off acknowledgment mode Turn on acknowledgment mode Toggle acknowledgment mode on or off Request status of acknowledgment mode The following messages are sent by the EF200 in response to an ACKMOD com mand or in response to any ACKMOD command
4. TO NER ENABLE DISABLE RING TONES Remote Commands EF200 M essages Example 62 The TONER command enables or disables ring tones Ring tones are sent to the AEC and remote ends when the EF200 detects an incoming ring on its telephone line This provides an audible indication to the users that the phone is ringing The factory default setting for TONER is 1 on The following commands can be sent by the remote control device to enable or dis able ring tones The following messages are sent by the EF200 in response to a TONER command or in response to any TONER command when acknowledgment mode is on Ring tones are currently disabled Ring tones are currently enabled In the following example the remote control device requests the ring tone status of the EF200 with Device ID number 12 Then it enables ring tones on the same EF200 Acknowledgment mode is enabled ONER A12TONERO ONE A12TONER1 Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE CALLP CALL PROGRESS MESSAGE The call progress message of the EF200 reports call progress tones ring busy dial tone etc when they are detected The remote control device may use this informa tion to implement features such as automatic dialling from the remote control device Remote Commands The CALLP is a message used by the EF200 to report the call progress tones detected during the
5. Telephone Line To Phone and To Line take RJ11 connectors Standard telephone cables can be used The EF200 should be connected to an analog telephone line or an analog port from a PBX Digital PBX lines should not be used EF 400 Interface The EF400 Interface is not currently implemented Do not connect anything to this port From AEC To AEC From Remote and To Remote These audio connectors accept a mini 3 5 mm 3 con ductor terminal block provided From left to right the conductors are positive signal negative signal and ground Power Supply Input The power supply input accepts a 5 pin DIN male con nector Only use power supply provided by ASPI Digi tal 1 ground 2 ground 3 5Vdc 4 15Vdc 5 15Vdc Copyright 1998 All Rights Reserved
6. 2 If caller ID is enabled caller ID information will be sent to the remote control device between the first and second rings If auto answer is enabled the EF200 will answer the phone after the second ring 4 If auto answer is not enabled you can answer the line by sending the PHONE1 command at any time 5 An entry tone will be played when the call is answered if entry tones are enabled y To end the call send the PHONEO command to the EF200 This will cause the EF200 to hang up The EF200 can be muted in various ways using the RS 232 command set Mute All Nobody hears the FROM AEC signal The people on the phone don t hear anyone The people on the remote end don t hear anyone Phone on Hold Telephone audio is muted in both directions If you send more than one mute command to the EF200 you have to turn each one off individually For instance if you turn on MUTEP and PRIVACY and then turn off PRIVACY the people on the phone won t hear anyone until you turn off MUTEP as well The PRIVACY ON light on the front panel will only light up when the PRIVACY com mand is sent or the PRIVACY button on the front panel is pushed Any time the PRI VACY ON light is lit nobody can hear you Privacy mode does not mute audio going to the RECORD output of the EF400 If you want to prevent local speech from being recorded on a device connected to the EF400 use the MUTE contact closure on the EF400 re
7. mand Acknowledgment mode is enabled es oe es Copyright 1998 All Rights Reserved EF200 BLOCK DIAGRAM EF200 BLOCK DIAGRAM puqg H 1910 10499480 4N 10 dSd anna p ssalbold 29 4 NOOWSY QI 491 89 YILAN se ajoway ol YNIY9 99V NOONE uolssaiddng asion d10H wai awy gt gt gt gt 4 Wa wol4 041 A 10 219u99 9U0 Y Aquq Buy INLA gt gt 93v OL y or y AOWALYd da lnw J On J ae s 23V dNIY9 i 1910 E E ES E T a OE NEEE uoyd 0L 69 ASPI Digital The Sound of DSP CONNECTOR PINOUTS 5 1 o W o RS 232 5 1 Eo 15 11 LOGIC IN OUT ASPI BUS IN TO LINE EF400 INTERFACE FROM AEC ARA 4 POWER 70 EF200 USER M ANUAL RS 232 Port 9600 8 N 1 The RS 232 port accepts a male DB 9 connector Only pins 2 3 and 5 are required by the EF200 Connect pins straight through do not use null modem 1 DCD 2 TX 3 RX 4DSR 5 ground 6 DTR 7 CTS 8 RTS 9 No connection Logic In Out Port The Logic In Out port accepts a male DB 15 connector See Using the Logic In Out Port on page 15 for more information about building a Logic In Out controller ASPI Bus The ASPI Bus uses RJ45 conectors These should be used with category five twisted pair cable
8. the remote control device requests the incoming ring mes sage status of the EF200 with Device ID number 12 Then it enables ring messages on the same EF200 Acknowledgment mode is enabled A12RING1 A12RING1 Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE SAVENV SAVE CURRENT SETTINGS TO NON VOLATILE MEMORY The SAVENV saves the EF200 s current settings to non volatile memory These set tings will be used as the default settings each time the EF200 is powered on The default settings may also be restored by sending the RESTNV command Please note that audio may drop out for a second while the EF200 writes to non vola tile memory Normally the SAVENV command is used during the configuration pro cess when a conversation is not taking place Remote Commands The following commands can be sent by the remote control device to save the current settings in non volatile memory SAVENV Save the current settings as the user default EF200 M essages The EF200 sends the following message in response to a SAVENV command if acknowledgment mode is enabled The EF200 has finished saving the settings Example In the following example the remote control device saves the settings of the EF200 with Device ID number 12 ASPI Digital The Sound of DSP 57 SO UNDL SO UNDP Remote Commands EF200 Messages 58 EF200 USER M ANUAL SEND TONE TO AEC REMOTE OR PHONE The SOUNDL
9. ANUAL EF200 COMMAND SET REFERENCE COMMAND SYNTAX Device type Device ID The EF200 Command Set is used to control an EF200 using an RS 232 remote con trol device such as a touch panel or personal computer The commands control everything from answering and dialing to enabling and configuring the EF200 s fea tures The EF200 Command Set also includes messages which are sent back to the remote control device These messages can contain acknowledgment or status messages in response to EF200 commands They may also carry information about events that occur on the telephone line such as caller ID information This reference describes the syntax of all of the available commands and messages as well as the purpose and effects of each of these commands In short it provides all the information necessary to integrate the EF200 Command Set into a remote control device The EF200 commands are short strings of text which are case sensitive The com mands contain a device type and Device ID for specifying an individual device in a chain of ASPI Digital products on an ASPI Bus so that commands can be targeted at a specific unit They also contain a command name and some data to be used by the command Each command is terminated with a carriage return M character Description Number of Characters Range of Values Device Type 1 0 9 A 2 Device ID 2 00 31 Command Name 1 7 0 9 A Z Command Data 0 32 ascii c
10. ASPI Digital The Sound of DSP 51 EF200 USER M ANUAL PRIVACY ENABLE DISABLE PRIVACY MODE MUTE ALL OUTGOING AUDIO Remote Commands EF200 M essages Example 52 The PRIVACY command mutes or unmutes audio going to the remote end and to the phone from the EF200 This means the people on the AEC end are not hear by people on the remote or phone ends This has the same effect as the PRIVACY button on the front panel and will light the PRIVACY ON LED when enabled Also see the MUTEP and MUTER commands The setting for PRIVACY is always 0 off when the EF200 is reset The following commands can be sent by the remote control device to mute or unmute all output audio Turn off privacy mode Turn on privacy mode Toggle privacy mode on or off Request status of privacy mode The following messages are sent by the EF200 in response to a PRIVACY com mand or in response to any PRIVACY command when acknowledgment mode is on Privacy mode is currently off Privacy mode is currently on In the following example the remote control device requests the privacy mode status of the EF200 with Device ID number 12 Then it turns on privacy mode on the same EF200 Acknowledgment mode is enabled A12PRIVACY1 A1l2PRIVACY1 Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE REM CON REMOTE CONNECT DISCONNECT The REMCON command connects or disconnects the audio paths going to and from the remo
11. Digital EF400 Acoustic Echo Canceller to the AEC jacks of the EF200 the calibration process is quite easy Open the EF400 and turn the remote output pot R25 fully counter clockwise to 20 dBu Turn the remote input pot R24 fully clockwise to 20 dBu The EF200 is designed to work with the EF400 when it is set to these levels If other equipment is connected to the FROM AEC and To AEC jacks it should be capable of interfacing with 20 dBu signals The pots on the EF400 are single turn pots only Do not try to turn them too far The FROM REMOTE signal level is adjusted using the FROM REMOTE GAIN TRIMPOT located just to the left of the TO PHONE LEVEL INDICATOR The range of adjustment is from 20 dBu nominal to 4 dBu nominal To calibrate this input you need to have someone on the remote end talk so that you can verify their speech level on the TO PHONE LEVEL INDICATOR 1 Turn on the EF200 as well as the room audio system including the AEC so that you can hear the speech on the remote end 2 Have the person on the remote end speak in a normal voice while there is no local audio input through the AEC 3 Adjust the FROM REMOTE GAIN TRIMPOT until normal speech levels from the remote end frequently illuminate the first yellow LED on the TO PHONE LEVEL INDICATOR and occasionally flicker the second yellow LED Turning the trim pot clockwise will increase the level and turning it counterclockwise will decrease the level This is a
12. ET 15 Operating the EF200 eesooessocsssesssccesocesoossoossssesssocsocssoosessesssecesocssoosssssssse L7 Using the EF200 Without RS 232 Control ccccscccsccessscesseceeseessecentecsseeeaecesneeneceaeees 17 Using the EF200 with RS 232 Control cccccccssccesseseseeenseseecesseceececeseeenseeeaeeceeeeeaeeee 17 Pros TeSW GOI Said sachui casecisiscecstandssecicint sacteissavistantalaaadinies sdradsaveagartineeaneics EO Residual Echdor nisin i a i a ii i aa iaa 19 Can t Receive Calls or Dial OUuUt c ccccccccessccececseesesecesseceeeeceesaecesssseeseneesesaeeensaeeees 19 Can t Get Caller ID InfOrmation ccccccccceccessscessecesecessececeecnseeeaceesnceseceaceceeeenaeesaes 20 Remote Control Problems ssepe e a EE 20 Contacting Technical SUPPOTE ccccssccescecenceeseceesecesecessececceceeeeeaceeeneesaeceaceceeeenaeeaee 21 Technical Specifications sesssocesocesooccsoesssccssocesooesocssoecssocesocesoosssossssessseee 22 GOMPTIANC AE A E E NA aagenseeeas 22 Warranty Information e sseeesooesoocssscsssecssocesocesoosesocssocesocesoocesossssecssocesooses 24 EF200 Command Set Reference cccccccscscscsssccssscssssssssssssssssssseseseee LO COMING SYNA Asa ni EE E ah gh state aa E 26 EF200 Block Diagram esesssoocsssooecssosecssosccesssoossssosessosecssosecesssosssssoossssoe 0I Connector PinOults cccccccccscsssssssssssssssscssscsssssssssssssssssssssssssssssssssssssseee 70 ASPI Digital
13. RS 232 CONTROL You can control all of the EF200 s features with an RS 232 remote control device All of the dialing functions can be controlled through the RS 232 port You can also use the front panel or an analog handset to make calls as described in the previous section even if you have an RS 232 remote control device connected to the system The instructions below explain which RS 232 commands are needed to accomplish each function Users may not need to know these commands since they may be hid den behind the user interface of the remote control device ASPI Digital The Sound of DSP 17 M aking a Call Receiving a Call Ending a Call M uting the EF200 18 Warning EF200 USER M ANUAL Follow these steps to make a call using the EF200 command set 1 The EF200 should initially be on hook the PHONE CONNECT light should not be lit 2 Take the EF200 off hook by sending the PHONE1 command the PHONE CON NECT light will turn on and wait for a dial tone Dial tone will be audible on the local and remote ends Dial the number using the DIAL command 4 The conversation may begin as soon as the other party picks up the line ad These events occur when a call is received by the EF200 1 When the phone rings the RING message will be sent to the remote control device if the messages are enabled Also ring tones may be sent to the TO AEC output to provide an audible indication that the line is ringing
14. RS200 Rack Mount shelf included with purchase of EF200 and EF400 together RS 232 remote control device optional Copyright 1998 All Rights Reserved INSTALLATION EF200 FRONT AND REAR PANELS A N SS Y O Ss JASPI Ni x c PRIVACY REMOTE PHONE BLS TA POWER TO PHONE FROM PHONE LE L T EchoFree gt TF amp S gt ar EF200 LEVEL LEVEL 1 2 3 4 5 678 9 10 11 13 15 17 gE r REMOTECONTROL ARR BUS TO PHONE 2 ae Pea he ae aiia TINDE a gg eae RS 232 EF400 FROM TO FROM TO EES EEEr INTERFACE AEC AEC REMOTE REMOTE T W o FB82888888 aL uy ANAANAAADANA LOGIC IN OUT ASPIBUS To LINE e 12 14 16 18 19 20 21 22 23 Figure 1 EF200 Front and Rear Panels 1 POWER INDICATOR When the LED is green power is on 2 FROM REMOTE GAIN TRIMPOT This adjusts the gain on the signal coming in on the FROM REMOTE channel 3 TO PHONE LEVEL INDICATOR Displays the signal level going to the telephone line 4 TO REMOTE GAIN TRIMPOT This adjusts the gain on the signal going out on the TO REMOTE channel 5 FROM PHONE LEVEL INDICATOR Displays the signal level coming in from the telephone line 6 PRIVACY ON INDICATOR This LED is blue when privacy mode is on 7 REMOTE CONNECT INDICATOR This LED
15. Usually this is only one character because most commands just turn a feature on or off Some commands however may have several characters worth of data For instance the DIAL command may be given an entire phone number at once Also some messages from the EF200 such as caller ID information may have several characters Commands can be sent to multiple devices by replacing the device type or Device ID characters with the character The following example commands illustrate the different ways you can send com mands to multiple devices by replacing the device type and or Device ID with characters Zear HaabiGaniansweromile HRDO0 wih Dace DA auto answer on the EF200 with Device ID 12 3ERROR1 Enable error messages for devices of all types with Device ID 3 AL411 Dial directory assistance on all EF200s don t try this at home kids SWVER Request software version of all devices of all types ASPI Digital The Sound of DSP 27 EF200 USER M ANUAL VALID COMMANDS AND M ESSAGES 28 The following table is a list of commands recognized by the EF200 Table 4 EF200 Command List enable disable auto answer mode 30 CE C E HONE ING Em Em w a a E m cm set noise suppression level 49 PHONE o O connect disconnect phone 50 Pine se what devices are comes to the remore conor ST Festiv resore senings Trom vonva memo 5 ors E 34 35 36 38
16. is green when the remote audio is con nected 8 PHONE CONNECT INDICATOR This LED is green when the EF200 2 wire audio is connected 9 PRIVACY BUTTON Push this button to turn privacy mode on or off 10 REMOTE BUTTON Push this button to connect or disconnect remote audio 11 PHONE BUTTON Push this button to pick up or hang up the telephone line 12 DIP SWITCHES 13 RS 232 REMOTE CONTROL PORT Connect this to an optional RS 232 remote control device such as a touch panel or personal computer COM port 14 LOGIC IN OUT PORT Connect this to logic switches for optional remote control ASPI Digital The Sound of DSP 5 15 16 17 18 19 20 21 22 23 24 EF200 USER M ANUAL ASPI Bus IN Connects to the ASPI BUS OUT of another ASPI Digital device or an ASPI Bus terminator if the ASPI Bus is in use ASPI Bus OUT Connects to the ASPI Bus IN of another ASPI Digital device or an ASPI Bus terminator if the ASPI Bus is in use TO PHONE Connects to an analog telephone handset for manual dialing TO LINE Connects to the telephone line from the wall socket EF400 INTERFACE Connects to an EF400 for remote control of the EF400 not currently implemented FROM AEC Connects to the remote output of the AEC To AEC Connects to the remote input of the AEC FROM REMOTE Connects to the audio output of a CODEC or other 4 wire device TO REMOTE Connects to the audio input of a CODEC or other 4 wire device POW
17. noise suppression Remote Commands The following commands can be sent by the remote control device to change the noise suppression level Set noise suppression level to 6 dB Set noise suppression level to 10 dB Request current noise suppression level EF200 M essages The following messages are sent by the EF200 in response to an NSL command or in response to any NSL command when acknowledgment mode is on The noise suppression level is currently 6 dB The noise suppression level is currently 10 dB Example In the following example the remote control device requests the current noise sup pression level of the EF200 with Device ID number 12 Then it changes the noise suppression level on the same EF200 Acknowledgment mode is enabled A1l2NSL A12NSL6 A12NSL10 A12NSL10 ASPI Digital The Sound of DSP 49 PHO NE CONNECT DISCONNECT PHONE LINE The PHONE command is used to take the EF200 off hook or hang it up This has the same effect as the front panel PHONE button Remote Commands EF200 Messages Example 50 EF200 USER M ANUAL The setting for PHONE is always 0 disconnected when the EF200 is reset The following commands can be sent by the remote control device to take the phone on or off hook Connect the EF200 to the phone line Toggle the EF200 between on and off hook Request the on off hook status of the EF200 The following messages are sent by the EF200 in response
18. only used as messages sent by the EF200 to contain the caller ID information The following messages are sent by the EF200 between the first and second ring of an incoming call as long as caller ID is enabled CIDTmmddhhii Caller ID timestamp information mm two digit number representing the month dd two digit number representing the day hh two digit number representing the hour ii two digit number representing the minute CIDNs Caller ID name information s string up to 16 characters long containing the caller s name CID s Caller ID telephone number information s string up to 16 characters long containing the caller s telephone number Caller ID information was not detected on this call In the following example the EF200 with Device ID 06 sends caller ID information to the remote control device The call was received from ASPI Digital at 1 42 PM on July 30th Caller ID is enabled AO6CIDTON7301342 AO 6CID 4048923200 AO 6PHONEL AO 6PHONE1 Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE DTM F DTMF DIGIT DETECTED MESSAGE Remote Commands EF200 Messages Example The DTMF message occurs whenever the DTMF detection feature is enabled and the EF200 has detected that a DTMF digit has been dialed on the opposite end of the line The DTMF decoder can detect the digits 0 9 and The DTMF decoder will only send one digit at a time immediately after it detec
19. reports these numbers to the remote control device using the DTMF message when the DTMF detection feature is enabled The DTMF detection feature of the EF200 passes industry standard tests for talk off and noise immunity These tests make sure it is unlikely that the EF200 will falsely detect speech or noise as a DTMF digit It is still possible however that false detec tions will occur Because of this you should avoid using single digit DTMF codes to control anything If two or more digits are required to make a valid code single stray false digits will have no effect The factory default setting for DIMF is 0 off Remote Commands The following commands can be sent by the remote control device to enable or dis able DTMF detection Turn off DTMF detection Turn on DTMF detection Toggle DTMF detection on or off Request status of DTMF detection EF200 M essages The following messages are sent by the EF200 in response to a DTMF command or in response to any DTMF command when acknowledgment mode is on DTMF detection is currently off DTMF detection is currently on Example In the following example the remote control device requests the DTMF detection sta tus of the EF200 with Device ID number 8 Then it enables the DTMF detection of the same EF200 Acknowledgment mode is enabled ASPI Digital The Sound of DSP 37 EF200 USER M ANUAL DTM FC ENABLE DISABLE DTM F CLAMPING Remote Commands EF2
20. spaces mean switch is off Device ID Switch 6 Switch 7 Switch 8 Switch 9 Switch 10 Device ID 4 Device ID 3 Device ID 2 ss ID 1 Device ID 0 O O Ojo Z Z Z zZ i Z O Z A O Z i O Z O Z i j a O Z O Z O O O Z z Z S SO cf AP aA AL BP Of N O O O O O O O O O O Z Z Z Z Z Z Z Z Z Z O O O O O O Z Z Z Z Z Z i O Z O Z Copyright 1998 All Rights Reserved INSTALLATION CONNECTING THE EF200 To OTHER EQUIPMENT The connections described below are also shown in Figure 2 Telephone and The EF200 will typically be connected to other equipment as shown below Audio Connections Oe SIII Sees OO eZ ies p Si NWL Q 66 hassos PISSIS 6 OOO M 5 V Oo ge o o 0 m REMO ONTROL ASPI BUS 4 IMN AHO eqaqqaa RS 232 EF400 TO o SHeHae ZuZo99 INTERFACE REMOTE REMOTE O SB O BU ARUABA RATE LOGIC IN OU ASPIBUS tof ine 4 4 L 3 5 15 VDC FROM ON oer C Reserved ST TO OFF CO Reserved r To OFF ime AGC E Noise SUPPRESSON 0 0 CODEC hybrid a 6
21. telephone call It will not be recognized by the EF200 as a com mand EF200 M essages The following messages are sent by the EF200 when it detects a call progress tone during a call The call progress feature must be enabled see the CALLP command for these messages to be sent Fast busy reorder detected CALLP 02 Busy signal detected CALLP 03 Ring detected CALLP 04 Dial tone detected Example In the following example the remote control device receives call progress messages from the EF200 with Device ID number 9 In this example a number is tried twice A dial tone is received each time before the number is dialed The first time a busy signal is received The second time the phone rings AO 9PHONE1 es oe OOo oi e OOo i pe ASPI Digital The Sound of DSP 63 EF200 USER M ANUAL CIDT CIDN CID CIDX CALLER ID INFORMATION MESSAGES Remote Commands EF200 M essages Example 64 The EF200 detects caller ID information and sends it to the remote control device between the first and second rings of an incoming call As long as the caller ID fea ture is enabled see the CID command on page 35 the EF200 will send these mes sages The EF200 will either send three separate messages CIDT CIDN and CID containing the caller ID information or it will send a single CIDX message indicating that caller ID information was not received These commands should not be sent to the EF200 They are
22. the connection Unlike other phone adds the EF200 also includes an advanced noise suppression algorithm which improves the signal to noise ratio of incoming telephone signals by up to 10 dB without adding distortion or musical noise to the speech signal This greatly improves overall speech quality for all participants when callers are in a noisy environment or are using a noisy connection such as a cellular phone Automatic gain control ensures consistent audio levels compensating for differences between different lines and handsets This means users don t have to change volume levels when they switch from local to long distance calls Automatic gain control line echo cancellation and noise suppression all work together to ensure consistently high audio quality every time you make a call The EF200 s telephony features enhance its usefulness in integrated systems The DTMF dialing and Call Progress capabilities help make dialing intuitive through a remote control device The ring and entry tone generation capability allows users to hear when someone is ringing the EF200 even if an analog handset is not con nected to the system The DTMF detection feature allows integrators to add touch tone remote control capability to their systems These features make the EF200 the most advanced device of its kind Cutting edge DSP technology gives it the best sound quality available The wide range of features and controllability make t
23. the front panel on the same EF200 Acknowledgment mode is enabled A12LOCKFP A12LOCKFPO A12LOCKFP1 A12LOCKFP1 ASPI Digital The Sound of DSP 45 EF200 USER M ANUAL M UTEP MUTE AUDIO TO PHONE Remote Commands EF200 M essages Example 46 The MUTEP command mutes all signals going to the phone interface This means the people on the AEC and remote ends can talk to each other without the party on the phone hearing Also see the MUTER and PRIVACY commands The setting for MUTEP is always 0 off when the EF200 is reset The following commands can be sent by the remote control device to mute or unmute the audio going to the phone Unmute the audio going to the phone Mute the audio going to the phone MUTEP2 Toggle to phone mute on or off Request status of to phone mute The following messages are sent by the EF200 in response to a MUTEP command or in response to any MUTEP command when acknowledgment mode is on Audio going to the phone is currently not muted Audio going to the phone is currently muted In the following example the remote control device requests the to phone mute status of the EF200 with Device ID number 12 Then it mutes the audio going to the phone on the same EF200 Acknowledgment mode is enabled A12MUTEP A12MUTEPO A12MUTEP1 A12MUTEP1 Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE M UTE
24. tone to everyone indicating that someone has called and needs to enter a passcode The caller tried the passcode and gets it wrong the first time according to the remote controller so the controller sends a buzz tone to the caller indicating an incorrect passcode The caller tries again and gets the right code The controller sends entry tones to the caller and the room indicating that the caller has now entered the confer ence The caller is taken off hold Acknowledgment mode ring messages auto answer and DTMF decoding are enabled Entry tones are disabled Remote Command EF200 Message es CC es A12PHONE1 A12HOLD1 A12HOLD1 A12SOUNDP05 A12SOUNDP05 A12SOUNDLO5 A12SOUNDLO5 A12SOUNDP07 A12SOUNDP00 A12SOUNDLOO A12SOUNDLOO0 A12HOLDO A12HOLDO The Sound of DSP 59 EF200 USER M ANUAL SW VER REQUEST SOFTWARE VERSION The SWVER command requests the software version of the EF200 Remote Commands The following commands can be sent by the remote control device to mute or unmute the audio going to the remote end Request the software version of the EF200 EF200 M essages The following message is sent by the EF200 in response to a SWVER command indicating its software version Example In the following example the remote control device requests the software version of the EF200 with Device ID number 12 A12SWVER A12SWVER1 00 00 60 Copyright 1998 All Rights Reserved
25. volatile memory Also see RESTNV for restoring the user defaults from non volatile memory The following command can be sent by the remote control device to restore the EF200 to the factory defaults Change all the settings back to factory defaults The EF200 sends a RESETF message in response to a command after it sends status messages for each of the settings that were changed by the restore operation if acknowledgment mode is enabled The EF200 has finished restoring the defaults In the following example the remote control device restores the default settings of the EF200 with Device ID number 12 The EF200 sends back an acknowledgment after the restore is complete Acknowledgment mode is enabled Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE RESTNV RESTORE SETTINGS FROM NON VOLATILE MEMORY The RESTENV command restores the EF200 s settings to the user power up defaults stored in the non volatile memory This is useful for putting the EF200 in its normal configuration after someone has changed the settings for a particular call See the SAVENV command for information about saving the user defaults in non vol atile memory Remote Commands The following command can be sent by the remote control device to restore the EF200 to the user defaults Change all the settings back to their default
26. when acknowledgment mode is on Acknowledgment mode is currently off Acknowledgment mode is currently on At the beginning of the example acknowledgment mode is turned off at first The remote control device turns on automatic gain control and starts getting acknowledg ments a A23ACKMOD A23ACKMODO0 A23ACKMOD1 A23ACKMOD1 A23AGC2 A23AGC1 ASPI Digital The Sound of DSP 31 EF200 USER M ANUAL AGC ENABLE DISABLE AUTO MATIC GAIN CONTROL Note Remote Commands EF200 M essages Example 32 The automatic gain control feature is applied to the incoming telephone signal It adjusts the gain of the incoming speech to keep it at a constant level The AGC com mand enables or disables this feature To set the target level for the automatic gain control use the AGCL command There is also automatic gain control on the outgoing telephone signal but it cannot be disabled The factory default setting for AGC is 1 on The following commands can be sent by the remote control device to enable or dis able automatic gain control Turn off automatic gain control AGC1 Turn on automatic gain control AGC2 Toggle automatic gain control on or off Request status of automatic gain control The following messages are sent by the EF200 in response to an AGC command or in response to any AGC command when acknowledgment mode is on Automatic gain control is currently off Automatic gain control is currently on
27. 00 M essages Example 38 The DTMF clamping feature attenuates the input telephone signal when a DTMF digit is detected This basically mutes the DTMF digits punched by the caller so other people in the conference don t hear them The factory default setting for DTMFC is 0 off The following commands can be sent by the remote control device to enable or dis able DTMF Clamping Turn off DTMF clamping Turn on DTMF clamping Toggle DTMF clamping on or off Request status of DTMF clamping The following messages are sent by the EF200 in response to a DTMFC command or in response to any DIMFC command when acknowledgment mode is on DTMF clamping is currently off DTMF clamping is currently on In the following example the remote control device requests the DTMF clamping sta tus of the EF200 with Device ID number 17 Then it disables the DTMF clamping of the same EF200 Acknowledgment mode is enabled A1l7DTMFCO A17DTMFCO Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE ERROR ENABLE DISABLE ERROR REPORTING When the EF200 detects an error usually a command syntax error it may report it using the ERROR message The ERROR command enables or disables the error reporting feature This is useful for debugging the commands coming from the remote control device The factory default setting for ERROR is 1 on Remote Commands The following commands can be sent by the r
28. 39 40 41 42 3 44 45 46 47 48 49 50 6 send a tone to the AEC and remote ends or to the 58 S phone 1 OU SWVER request software version ONEE 5 enable disable entry and exit tones 6 ONER enable disable ring count Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE The following table is a list of messages sent by the EF200 to the host Table 5 EF200 Message List caller ID phone number 64 PONG device response to PING command RING incoming ring detected 68 64 caller ID not detected 7 ASPI Digital The Sound of DSP 29 EF200 USER M ANUAL AA ENABLE DISABLE AUTO ANSWER MODE Remote Commands EF200 M essages Example 30 When auto answer mode is enabled the EF200 automatically picks up the phone after the second ring When the call is finished auto answer remains enabled and the EF200 will automatically answer the next call If auto answer mode is disabled the PHONE command should be used to answer the call manually The factory default setting for AA is 0 off The following commands can be sent by the remote control device to enable or dis able auto answer Remote Command Effects Turn off auto answer Toggle auto answer on or off Request status of auto answer The following messages are sent by the EF200 in response to an AA command or in response to any AA command when acknowledgment mode is on
29. 40 x 1 2 provided with the RS200 If one EF200 is to be mounted on the shelf place it in the center If two units are to be mounted mount them side by side 3 If only one EF200 is mounted attach the two small faceplates supplied with the RS200 to each side of the EF200 Use four more of the small screws to secure the face plates 4 Secure the RS200 shelf to the rack using all four large screws 10 32 x 1 2 sup plied with the RS200 5 The EF200 power supply block should be placed securely in the base of the rack unit To eliminate any risk of the power cable being pulled out of the EF200 rear panel connector use the plastic Ty Wraps provided with the RS200 to provide strain relief by securing the power cable to the rack upright at the rear of the EF200 Failure to use all four screws to attach the RS200 shelf to the rack may result in uneven loading and cause a safety hazard Ensure that the power supply is securely located such that it cannot become dislodged and fall Such a fall could cause personal injury or equipment failure When mounting an EF200 in a rack consideration should be given to airflow and operating ambient temperatures inside the rack To ensure safe operation of the EF200 ambient operating temperatures inside the rack should not exceed 50 degrees Celsius Allow 2 inches of open space in front of the EF200 and four inches behind the unit for proper ventilation Equipment should not be installed in the rack in
30. CODEC should be connected to the last EF200 The connections are the same as for a single EF200 ASPI Digital The Sound of DSP 13 Connecting the Audio Between EF200s Connecting the ASPI Bus Caution Note EF200 USER M ANUAL Connect the TO REMOTE jack of the first EF200 to the FROM AEC jack of the second EF200 Connect the FROM REMOTE jack of the first EF200 to the TO AEC jack of the second EF200 Connect the REMOTE jacks of the second EF200 to the AEC jacks of the third EF200 in the same way Repeat this process until you get to the last EF200 Calibrate each EF200 by turning the FROM REMOTE GAIN TRIMPOT fully clockwise and the TO REMOTE GAIN TRIMPOT fully counterclockwise These are five turn pots so you will have to turn them a few times The trimpots on the last EF200 the one connected to the CODEC should be calibrated according to the directions for a single EF200 The ASPI Bus can connect multiple ASPI Digital products such as the EF200 to the same RS 232 remote control device This means only one RS 232 connection is needed to control all devices on the ASPI Bus Each device on the ASPI Bus should have a different Device ID or Type ID so that each device can be addressed and con trolled individually These steps should be followed to connect the ASPI Bus 1 Connect the RS 232 remote control device to the first ASPI Digital product in the chain 2 Connect an ASPI Bus terminator to the ASPI BUS IN of the fir
31. Copyright 1998 EF200 USER M ANUAL INTRO DUCTION Congratulations About This M anual Product Description Congratulations on your purchase of the EchoFree EF200 Phone Add By choos ing ASPI Digital s EchoFree products you are investing in cutting edge DSP technol ogy that will help provide the best possible audio quality for your system This manual explains how to install configure and calibrate the EF200 in any system that needs a two wire to four wire interface It also provides information about oper ating and troubleshooting the EF200 The EchoFree EF200 Phone Add provides a full duplex interface between a four wire audio system and a two wire telephone line It allows a telephone caller to be brought in to any four wire audio system such as a distance learning or videoconfer encing system The EF200 is similar to a digital hybrid but with many more features and capabilities The primary function of the EF200 is the line echo canceller LEC which digitally eliminates reflections from the telephone hybrid The LEC algorithm features extremely fast adaptation and excellent full duplex operation This allows natural communication without half duplex behavior or residual echo The LEC algorithm is G 165 and G 168 compliant which ensures reliable proven performance Because of its rapid adaptation the EF200 requires no training noise This means that callers don t get blasted by white noise at the beginning of
32. ECHOFREE EF200 PHONE ADD USER M ANUAL Copyright 1999 ASPI Digital All rights reserved Printed in the United States of America Because of technical progress specifications are subject to change without notice EchoFree is a trademark and ASPI is a registered trademark of ASPI Digital ASPI Digital The Sound of DSP 1720 Peachtree Street NW Suite 220 Atlanta GA 30309 2439 404 892 3200 www echofree com Technical Support 404 892 3200 help aspi com EF200UM 0100 99 EF200 USER MANUAL INEPODUCHON PEPEE EA T A T S AEEA a Piod t Features snme A i E E A E NE an 3 DUNS CAMA ORD so accssised svecsaisveldesesionsdesstecdeceswuse scusensioeeseusssoseunvassesvesussaswes ssir A Preparing for Installation e cccccccccccccssccccesveceseceesseecescseesussesessaeeseseeesuseesesseeeenaees 4 EF200 Front and Rear Panel ren an E EEA R e R RAA 5 Setting the DIP Switeh Sonin ae arai ea aE ar ina TEES eTEN E ENSS 7 Connecting the EF200 to Other Equipment 0 sccccsccessecesseessecentecseceenecesneenseeeaeees 9 Configuring the Non Volatile Memory cccsccessssesscesseceneecusceeacensnceseceaceceeeenaeesnes 10 Calibrating the EF200 Audio Signal Levels sccsccccsccesseseseessecececesceeaeceeeeeneceaeees 12 Connecting Multiple EF 2008 0 s ccssccesessssseesceeenceesecesceceseeesceceacecseeeeaeceseeesaeceaeees 13 MOtUnting the EP 200 ET E bees sack ics A A TT TAT 14 Using the Logic In Out POT r eiei R EEE E ER E
33. EF200 COMMAND SET REFERENCE TO NEE ENABLE DISABLE ENTRY AND EXIT TONES The TONEE command enables or disables entry and exit tones These are tones which are sent to the AEC and remote ends when the phone is connected or disconnected Entry and exit tones are especially useful when auto answer or auto hangup are enabled For example they can give an audible indication that the phone was picked up and didn t just stop ringing The factory default setting for TONEE is 1 on Remote Commands The following commands can be sent by the remote control device to enable or dis able entry and exit tones Disable entry and exit tones Enable entry and exit tones Toggle entry and exit tones on and off Request status of entry and exit tones EF200 M essages The following messages are sent by the EF200 in response to a TONEE command or in response to any TONEE command when acknowledgment mode is on Entry and exit tones are currently disabled Entry and exit tones are currently enabled Example In the following example the remote control device requests the entry and exit tone status of the EF200 with Device ID number 12 Then it enables entry and exit tones on the same EF200 Acknowledgment mode is enabled ONE ONEE1 A12TONEE1 ASPI Digital The Sound of DSP 61 EF200 USER M ANUAL
34. ER SUPPLY INPUT Connects to the external power supply provided with the EF200 Copyright 1998 All Rights Reserved INSTALLATION SETTING THE DIP SWITCHES Note Switches 1 amp 2 Reserved Switch 3 AGC Enable Switch 4 Noise Suppression Enable Switch 5 Override EPROM Switches 6 10 Device ID Locate the 10 position DIP switch on the left side of the EF200 rear panel For the purpose of this discussion the switches are numbered one through ten from left to right The following instructions explain how to set each switch Changing the DIP switches will have no effect until the EF200 is reset Each time you change the setting of the DIP switches you must turn the EF200 off and back on for the changes to take effect Switches and 2 are reserved and should always be set to the off position When this switch is on automatic gain control is enabled on the telephone input sig nal when the EF200 is powered up After the EF200 is powered up the automatic gain control status may change if commands are sent to turn it off Also this switch may be disabled depending on the settings of switch 5 see below The default set ting for this switch is off This switch controls whether noise suppression is applied to the telephone input sig nal when the EF200 is powered up After the EF200 is powered up the noise sup pression status may change if commands are sent to turn it on or off This switch may be disabled depen
35. MAND The PONG message is sent by the EF200 in response to a PING command This can be used by the remote control device to find out what device IDs are used by EF200s Also see the PING command Remote Commands The EF200 will not recognize the PONG command You should only send the PING command from a remote control device EF200 M essages The following message is sent by the EF200 when the remote control device sends it a PING command PONG Response to PING command Example In the following example the remote control device sends the PING command to find out what EF200s are on the bus Two EF200s return a PONG message to announce their presence Acknowledgment mode is enabled ASPI Digital The Sound of DSP 67 EF200 USER M ANUAL RING INCOMING RING MESSAGE Remote Commands EF200 Messages Example 68 The RING message is sent each time the EF200 s telephone line rings This mes sage is enabled or disabled using the RING command Also ring tones may be sent to the AEC and remote audio outputs see TONER The RING command is not processed by the EF200 The RING command can be sent to turn RING messages on or off The following message is sent by the EF200 each time its phone line rings The telephone line just had an incoming ring In the following example the EF200 with Device ID 6 reports two incoming rings to the remote control device The user then picks up the phone using the PHONE com
36. R MUTE AUDIO TO REMOTE The MUTER command mutes or unmutes audio going to the remote end from the EF200 This means no audio is sent out the TO REMOTE jack This allows people on the AEC and phone ends to have a conversation without the people on the remote end hearing Also see the MUTEP and PRIVACY commands The setting for MUTER is always 0 off when the EF200 is reset Remote Commands The following commands can be sent by the remote control device to mute or unmute the audio going to the remote end Remote Command Effects MUTERO Unmute audio going to the remote end MUTER1 Mute audio going to the remote end MUTER2 Toggle remote mute on or off Request status of remote mute EF200 M essages The following messages are sent by the EF200 in response to a MUTER command or in response to any MUTER command when acknowledgment mode is on MUTERO Audio going to remote is currently not muted MUTER1 Audio going to remote is currently muted Example In the following example the remote control device requests the to remote mute sta tus of the EF200 with Device ID number 12 Then it mutes the audio going to the remote end on the same EF200 Acknowledgment mode is enabled A12MUTER1 A12MUTER1 ASPI Digital The Sound of DSP 47 EF200 USER M ANUAL NS ENABLE DISABLE NO ISE SUPPRESSIO N Remote Commands EF200 M essages Example 48 The noise suppres
37. ar panel Copyright 1998 All Rights Reserved TROUBLESHO OTING TRO UBLESHO O TING RESIDUAL ECHO Identifying the Echo Source Removing the Echo If there is residual echo in the system it may not be a problem with the EF200 There are different types of echoes that come from different directions and the EF200 is only designed to remove one of them The first step is to make sure the echo isn t caused by something else Then the EF200 can be adjusted to remove any residual echo coming from the hybrid If both the AEC and Remote connections are used troubleshoot the system without the EF200 s phone connected at first This will make sure the 4 wire AECs on both ends are working properly If one side hears echo there is a problem with the AEC on the other side Troubleshoot the AEC according to the instructions for that device Make a call to test the EF200 s telephone interface If the party on the phone hears echo it is coming from the local or remote end Disconnect one end at a time by briefly unplugging the speaker or microphone and see when the echo goes away Troubleshoot the AEC on the side local or remote that was causing the echo If residual echo is heard on the local end try disconnecting the remote end If the echo is still there it is coming from the EF200 Troubleshoot the EF200 as described in the next section If the echo goes away when the remote end is disconnected trou bleshoot the AEC on the
38. command sends tones to the TO AEC and TO REMOTE outputs of the EF200 Similarly the SOUNDP command sends tones to the phone output SOUNDL and SOUNDP can each send one of several tones which can be used by the remote controller to indicate events that happen during the call For example when the DTMF decoder is being used the tones may indicate that an invalid code has been entered The following commands can be sent by the remote control device to send tones to the telephone or the AEC and remote ends soie LX Send tone number x to the TO Some oe TOARC mndTo _ and To REMOTE outputs SOUNDPx Send tone number x to the phone The following list of tones can be sent with either SOUNDL or SOUNDP oo Asie ane sen ow a e The following messages are sent by the EF200 in response to a TONEE command or in response to any TONEE command when acknowledgment mode is on Entry and exit tones are currently disabled Entry and exit tones are currently enabled Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE Example ASPI Digital The following example illustrates passcode entry using SOUNDL and SOUNDP to indicate status The EF200 auto answers and the remote controller puts it on hold as soon as it picks up so that the caller can t participate in the conference until the cor rect passcode has been entered The controller tells the EF200 to send a doorbell
39. control device requests the auto hangup mode status of the EF200 with Device ID number 12 Then it enables auto hangup mode on the same EF200 Acknowledgment mode is enabled ASPI Digital The Sound of DSP 33 EF200 USER M ANUAL CALLP ENABLE DISABLE CALL PROGRESS Remote Commands EF200 Messages Example 34 The CALLP command enables the CALLP messages which report call progress tones such as ring busy or dial tone to the remote control device The factory default setting for CALLP is 0 off The following commands can be sent by the remote control device to enable or dis able call progress Turn off call progress Turn on call progress Toggle call progress on or off Request status of call progress The following messages are sent by the EF200 in response to a CALLP command or in response to any CALLP command when acknowledgment mode is on Call progress is currently off Call progress is currently on In the following example the remote control device requests the call progress status of the EF200 with Device ID number 2 Then it disables the call progress of the same EF200 Acknowledgment mode is enabled AO2CALLPO AO2CALLPO Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE CID ENABLE DISABLE CALLER ID The caller ID feature returns caller ID information between the first and second ring of an incoming call if that service is provided on your telep
40. ding on the settings of switch 5 see below The default setting for this switch is off When this switch is off the non volatile memory settings for automatic gain control and noise suppression take precedence over the DIP switch settings When it is on the DIP switch settings take precedence over the software settings In other words if the Override EPROM switch is off the settings of switches 3 and 4 have no effect See the section about non volatile memory configuration for more information about internal automatic gain control and noise suppression settings The default setting for this switch is off These switches set the Device ID number for the EF200 The ID can be any number from 0 to 31 It is a five bit binary number with the least significant bit on switch 10 Table 1 lists the DIP switch positions necessary to set each Device ID number from 0 to 31 The Device ID is the same ID that is used with the EF200 Command Set The EF200 will respond only to commands that are sent with the same Device ID as the one set on its switches If you set the Device ID to one that doesn t agree with your remote control commands the remote control will no longer affect that particular EF200 If you are not using a remote control device via RS 232 or the ASPI Bus the Device ID settings do not matter The default Device ID is 0 ASPI Digital The Sound of DSP 7 EF200 USER M ANUAL Table 1 DIP Switch Positions for EF200 Device IDs Blank
41. e Number REN for this equipment You must upon request provide this information to your telephone company The REN is useful to determine the quantity of devices you may connect to your tele phone line and still have all of these devices ring when your telephone number is called In most but not all areas the sum of the REN s of all devices connected to one line should not exceed five 5 0 To be certain of the number of devices you may connect to your line as determined by the REN you should contact your local tele phone company to determine the maximum REN for your calling area An FCC compliant telephone cord and modular plug is provided with this equipment This equipment is designed to be connected to the telephone network or premises wir ing using a compatible modular jack which is Part 68 compliant See Installation Instructions for details If your EF200 causes harm to the telephone network the Telephone Company may discontinue your service temporarily If possible they will notify you in advance But if advance notice is not practical you will be notified as soon as possible You will be informed of your right to file a complaint with the FCC Your telephone company may make changes in its facilities equipment operations or procedures that could affect the proper functioning of your equipment If they do you will be notified in advance to give you an opportunity to maintain uninterrupted telephone service Connections t
42. ear music or be able to push a button to talk to an atten dant The setting for HOLD is always 0 off when the EF200 is reset Remote Commands The following commands can be sent by the remote control device to take the phone on or off hold Take the phone off hold Put the phone on hold Toggle to phone on and off hold Request status of whether the phone is on hold EF200 M essages The following messages are sent by the EF200 in response to a HOLD command or in response to any HOLD command when acknowledgment mode is on The phone is not on hold The phone is on hold Example In the following example the remote control device requests the on hold status of the EF200 with Device ID number 12 Then it puts the same EF200 on hold Acknowl edgment mode is enabled ASPI Digital The Sound of DSP 43 EF200 USER M ANUAL LEC ENABLE DISABLE LINE ECHO CANCELLATION Remote Commands EF200 M essages Example 44 The line echo canceller is the heart of the EF200 which removes residual echo from the telephone line We can t think of a reason you would want to turn it off except to see what a great job it s doing The factory default setting for LEC is 1 on The following commands can be sent by the remote control device to enable or dis able line echo cancellation Turn off line echo cancellation Turn on line echo cancellation Toggle line echo cancellation on or off Request status of line ech
43. ed in the non volatile memory and the RS 232 commands that configure them Table 2 Non volatile Memory Parameters nee on oom cnt rom em rom To r To J i A 7 cna gt Z ron oi oom NS Nowe snpeson enable sr Te nan Toi one Con ot Con ERROR Error reporting enable disable 1 on S S 5 w Saving C hanges Once the desired parameters have been set on the EF200 save them to the non vola tile memory by sending the SAVENV command The EF200 will be initialized with these settings every time the unit is powered on You can save to the non volatile memory up to 10 000 times Note Saving the parameters takes a few seconds and should not be done during a conversa tion Saving parameters during a conversation may cause gaps in the audio while the EF200 writes to the non volatile memory ASPI Digital The Sound of DSP 11 EF200 USER M ANUAL CALIBRATING THE EF200 AuDIO SIGNAL LEVELS Calibrating the AEC Warning Calibrating the FROM REMOTE Signal Calibrating the To REM OTE Signal Verifying Calibration 12 Note The EF200 is designed to interface with a wide range of signal levels so that it can be compatible with most equipment The expected levels for input and output should be set on the EF200 to match the levels of the equipment to which it is connected The following procedure should be followed to match these levels If you are connecting an ASPI
44. emote control device to enable or dis able error reporting Remote Command Effects ERRORO Turn off error reporting ERROR1 Turn on error reporting ERROR2 Toggle error reporting on or off ERROR Request status of error reporting EF200 M essages The following messages are sent by the EF200 in response to an ERROR command or in response to any ERROR command when acknowledgment mode is on Error reporting is currently off Error reporting is currently on Example In the following example the remote control device requests the error reporting status of the EF200 with Device ID number 7 Then it enables the error reporting of the same EF200 Acknowledgment mode is enabled AO7ERROR ERRORO AO 7ERROR1 ERROR1 ASPI Digital The Sound of DSP 39 EF200 USER M ANUAL FLASH SEND HOOKFLASH TO THE PHONE LINE Remote Commands EF200 Messages Example 40 The FLASH command is used to send a hookflash signal on the phone line in effect by hanging up the EF200 and quickly picking it up again This is just like the flash button on many telephones used for call waiting features This command has no effect when the EF200 is not connected The following command can be sent by the remote control device to hang up and pick up again Send a hookflash signal on the phone line No FLASH messages are sent by the EF200 in response to a FLASH command but it will send PHONE commands when it hang
45. er any other legal theory including but not limited to loss of profits downtime goodwill damage to or replace ment of equipment and property and any cost of recovering reprogramming or reproducing any program or data stored in or used with ASPI Digital products Some states do not allow limitations on how long an implied warranty lasts or the exclusion of incidental or consequential damages so the above exclusions or limita tions may not apply to you To obtain warranty service for your ASPI Digital product call us at 404 892 3200 or fax us at 404 892 2512 and we will issue a Return Material Authorization number RMA Use the original packaging materials to return the product Ship the product prepaid to ASPI Digital Attention Warranty Repair RMA Must be on package 1720 Peachtree Street NW Suite 220 Atlanta Georgia 30309 2439 USA Please be sure to include your name company address phone number and a descrip tion of the problem After repairing or replacing your ASPI Digital product we will ship it to you via a surface carrier of our choice at no cost to you If you wish it shipped via a specific carrier at your cost you must arrange it when you obtain the RMA Repair or replacement of your ASPI Digital product is your exclusive remedy 24 Copyright 1998 All Rights Reserved WARRANTY INFORMATION W hat this warranty This warranty does not cover defects resulting from accidents damage while in
46. five turn trimpot The TO REMOTE GAIN TRIMPOT should be calibrated so that the output level of the TO REMOTE signal is appropriate for the equipment to which it is connected In gen eral this would be about the same as the nominal input level The range of adjustment is from 20 dBu nominal to 4 dBu nominal Adjust this trimpot until the CODEC or other 4 wire equipment is receiving the correct level This is also a five turn trim pot The FROM PHONE LEVEL INDICATOR shows the level received from the telephone not the level going to the TO REMOTE jack When you change the gain on the TO REMOTE GAIN TRIMPOT the level shown on the meter will not change Give the EF200 a test run using both the AEC and remote connections if possible During normal conversation the TO PHONE LEVEL INDICATOR and FROM PHONE LEVEL INDICATOR should show levels that regularly hit the first yellow LED and occasionally flicker the second Levels that are much too high or too low may pre Copyright 1998 All Rights Reserved INSTALLATION vent the EF200 or other equipment from performing as designed and audio quality may suffer When connected to an EF400 the EF200 s TO PHONE LEVEL INDICATOR should show the same level as the EF400 s remote level indicator correct setting of this level is vital to the correct operation of the EF400 CONNECTING MULTIPLE EF200s Multiple EF200s can be easily connected together to allow multiple callers to be brought
47. haracters Terminator 1 M The device type indicates which ASPI Digital product the command is being sent to For the EF200 the device type is always A The Device ID is a two digit decimal number indicating the Device ID number of a specific device This is the same Device ID that is set by the rear panel DIP switches on the EF200 The Device ID must always have two digits so if the ID is less than ten a leading zero is needed For example the Device ID for unit six is 06 Each EF200 in a system should have a different Device ID so they can each be addressed individually It s ok for an EF200 to have the same Device ID as a differ ent ASPI Digital product because they will be differentiated by the device type On the EF200 the Device ID can be a 2 digit number from 00 to 31 26 Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE Command name Command data Sending commands to multiple devices Example The command name is a unique string of characters that indicates which command the EF200 should execute Command names for different products are not necessarily the same since the function and features of each product are different A list of avail able EF200 command names is shown in Table 4 on page 28 The command data is a string of up to 32 ASCII characters which follows the com mand name The allowed content of the command data depends on which command is being used
48. he EF200 extremely flexible while providing a straightfor ward user interface for simple installations Ww arranty Please take a moment to fill out and return your warranty registration card This Registration information will help us to provide you with better customer support 2 Copyright 1998 All Rights Reserved INTRODUCTION PRODUCT FEATURES ASPI Digital The Sound of DSP Easily connects to an Acoustic Echo Canceller AEC such as the ASPI Digital EF400 or other four wire system to add phone calls to conferences ASPI s proprietary noise reduction algorithm reduces static and hiss to make conference more intelligible and comfortable Built in DTMF dialer and detector Built in Caller ID feature allows conference moderator to see who is calling in User set entry and exit tones give you the option to hear a pleasant tone when callers enter or leave the conference Connection is quiet non distracting Automatic gain control on both the receive and transmit audio paths Complete RS 232 control for operation through your room controller including dialing out to a remote office Privacy mode for private conversations with the people in the room the party on the telephone or the remote 4 wire party Up to 32 EF200s can be linked together to form a simple conference bridge Diagnostic information is available to system integrators and other personnel via the EF200 s RS 232 port permitting remote tro
49. he EF200 is compliant with the ITU G 165 and G 168 requirements for line echo cancellers CE requirements FCC part 15 requirements and FCC part 68 require ments This equipment has been tested and found to comply with the limits for a Class A dig ital device pursuant to Part 15 of the FCC Rules These limits are designed to pro vide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radi 22 Copyright 1998 All Rights Reserved TECHNICAL SPECIFICATIONS Warning FCC Part 68 ate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Opera tion of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense This product was tested with ferrites around the cables connected to the DB9 and DB15 connectors Ferrites must be used on these cables to insure compliance FCC Regulations state that any unauthorized changes or modifications to this equip ment not expressly approved by the manufacturer could void the user s authorization to operate this equipment The EF200 complies with Part 68 of the FCC Rules The label affixed to this equip ment contains among other information the FCC Registration Number and Ringer Equivalenc
50. hone line The CID com mand enables and disables this feature but doesn t actually collect any caller ID information The CIDT CIDN and CID messages from the EF200 will send this information to the remote control device later when the call actually happens The phone company sends the caller ID information between the first and second ring If you manually pick up before the second ring you won t get caller ID The auto answer function picks up after the second ring so that caller ID information can be received The factory default setting for CID is 0 off Remote Commands The following commands can be sent by the remote control device to enable or dis able caller ID Turn off caller ID Turn on caller ID Toggle caller ID on or off Request status of caller ID EF200 M essages The following messages are sent by the EF200 in response to a CID command or in response to any CID command when acknowledgment mode is on Caller ID is currently off Caller ID is currently on Example In the following example the remote control device requests the caller ID status of the EF200 with Device ID number 6 Then it disables the caller ID of the same EF200 Acknowledgment mode is enabled AQ6CIDO AQ6CIDO ASPI Digital The Sound of DSP 35 EF200 USER M ANUAL DIAL DIAL ONE OR MORE DIGITS Remote Commands EF200 M essages Example 36 The DIAL command causes the EF200 to dial one or more touch tone number
51. into the system When the audio signals are connected according to the fol lowing directions the EF200 takes care of the necessary mixing functionality The ASPI Bus allows multiple devices to be controlled by a single RS 232 connection IZXKXXY Na S RRRA RLGSHo ONS Ye SX Se p RMOTMONTROL ASPLBUS To prone oo Of ry wsasvoc RS 232 E BE H 8 8 GE i AEHBBEBEEE LOGIC IN OUT fe BEE nee REMOTECONTROL wsasvoc RS 232 EF400 FRD FROM TO E INTERFACE Al C REMOTE REMOTE oWo u Sa BEGBBBBEEE LOGIC IN OUT TOPE PSTN g BE oF REMOTECONTROL To iuie 9 op Ta 45 415 VDC RS 232 e400 OF INTERFACE 3 g s UMY ecm GB t LOGIC IN OUT Asp BUS rrr are ae J a NES Sf oxic sop Figure 3 Connecting multiple EF200s Connecting the AEC The AEC should be connected to the first EF200 according to the guidelines above and CODEC The
52. ment mode is enabled AO 9GAINA 20 AO 9GAINA 20 ASPI Digital The Sound of DSP 41 EF200 USER M ANUAL GAINP SET PHONE OUTPUT GAIN Remote Commands EF200 M essages Example 42 The GAINP command sets the phone output gain level of the EF200 to any level between 99 dB and 0 dB Notice that this command can only apply attenuation The factory default setting for GAINP is 0 0 dB gain The following commands can be sent by the remote control device to set the phone output gain level Danes Senoeni eds etween so Sand phone output gain to x dB between 99 and 0 GAINP Request current phone output gain The following messages are sent by the EF200 in response to a GAINP command or in response to any GAINP command when acknowledgment mode is on Phone output gain is currently x dB In the following example the remote control device requests the current phone output gain of the EF200 with Device ID number 9 Then it sets a new level on the same EF200 Acknowledgment mode is enabled AO 9GAINP 20 AO 9GAINP 20 Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE HOLD PUT PHONE ON HOLD WITHOUT DISCONNECTING The HOLD command mutes audio going to and from the telephone line This is like taking the people on the phone out of the conference without actually hanging up on them This is different than the hold feature of your office telephone system so the person on the phone won t h
53. o cancellation The following messages are sent by the EF200 in response to an LEC command or in response to any LEC command when acknowledgment mode is on Line echo cancellation is currently off Line echo cancellation is currently on In the following example the remote control device requests the line echo cancella tion status of the EF200 with Device ID number 3 Then it enables line echo cancel lation on the same EF200 Acknowledgment mode is enabled AO3LEC1 AO3LEC1 Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE LO CKFP LOCK UNLOCK FRONT PANEL Remote Commands EF200 Messages Example The LOCKFP command locks the front panel buttons of the EF200 so that they have no effect The factory default setting for LOCKFP is 0 unlocked The following commands can be sent by the remote control device to lock or unlock the front panel of the EF200 Unlock the front panel buttons Lock the front panel buttons Toggle between locked and unlocked Request status of front panel lock The following messages are sent by the EF200 in response to a LOCKFP command or in response to any LOCKFP command when acknowledgment mode is on Front panel buttons are currently unlocked Front panel buttons are currently locked In the following example the remote control device requests the status of the front panel buttons of the EF200 with Device ID number 12 Then it locks
54. o party lines are subject to state tariffs Contact your local telephone company if you plan to use this equipment on party lines This equipment cannot be used on public coin service lines provided by the telephone company If you have trouble with the EF200 please contact us for information on obtaining service or repairs see Warranty Information on page 24 The telephone company may ask that you disconnect this equipment from the network until the problem has been corrected or until you are sure that the equipment is not malfunctioning ASPI Digital The Sound of DSP 23 EF200 USER M ANUAL WARRANTY INFORMATION W hat is covered For how long W hat we will do Limitations W hat we ask you to do Any defect in materials or workmanship Two years If your ASPI Digital product is defective and returned within two years of the date of purchase we will repair or at our option replace it at no charge to you If we repair your ASPI Digital product we may use new or reconditioned replace ment parts If we choose to replace your ASPI Digital product we may replace it with a new or reconditioned one of the same or similar design The repair or replacement is warranted for either a 90 days or b the remainder of the original two year warranty period whichever is longer ASPI Digital shall not be responsible for special incidental indirect or consequential damages resulting from any breach of warranty or und
55. ommands that have a visible impact like the PRIVACY command which turns on the front panel PRIVACY ON light Also look for messages from the EF200 like acknowledgement or error messages if the remote control device can display them Make sure the commands that are being sent to the EF200 have the correct syntax If only a couple of the commands aren t being processed there may be an error in the syntax of those commands Remember the commands are case sensitive The EF200 should return ERROR messages if the commands are typed incorrectly as long as error messages are enabled Make sure the Device ID of the EF200 matches the Device ID of the commands that are being sent If they don t match the EF200 will ignore all the commands Try sending a command to all devices instead of Device Type and Device ID If this works but sending commands to a specific device doesn t the Device ID doesn t match Make sure the RS 232 cable is connected securely to the EF200 and the remote con trol device Also the RS 232 port on the remote control device should be set to 9600 8 N 1 Copyright 1998 All Rights Reserved TROUBLESHO OTING CONTACTING TECHNICAL SUPPO RT If these troubleshooting guidelines don t resolve the problem you are experiencing with the EF200 please check our web site hitp www echofree com support for the most current technical support information If you have further questions please con tact us a
56. ote Control EF200 USER M ANUAL If the analog telephone works on the line try using it with the EF200 to dial manually Connect the TO LINE jack of the EF200 to the telephone jack in the wall and connect the handset to the TO PHONE jack Try making a call as outlined in Using the EF200 Without RS 232 Control on page 17 If you can make calls by dialing with the analog handset but not with the remote con trol device that means there is a problem with the remote control See the Remote Control Problems section below CAN T GET CALLER ID INFORMATION You can test caller ID information on your line by connecting a caller ID box to the line If the box detects caller ID information make sure the EF200 has caller ID enabled see the CID command If you can t get caller ID information it s probably because caller ID is not available on that telephone line Contact your local telephone company to add this service to the line Some digital PBX systems send caller ID information to digital phones on the system but not to analog lines controlled by the office switchboard Even if your office phones get caller ID information that doesn t necessarily mean that information is passed on to analog lines as well REMOTE CONTROL PROBLEMS Check Command Syntax Check Device ID Check RS 232 20 If the remote control device doesn t seem to be affecting the EF200 there are a few things you can check Try sending c
57. remote end If residual echo is heard on the remote end disconnect the microphone s in the local room If the echo is still there it is coming from the EF200 Troubleshoot the EF200 as described below If the echo goes away when the microphone is disconnected the echo is coming from the local room Troubleshoot the local AEC If the EF200 is not removing hybrid echo it may be due to a mismatch of levels com ing into the EF200 If levels are too far off it may be difficult for the EF200 to deter mine when to adapt its filter Make sure the levels are in the correct range by watching the front panel LED meters during normal conversation The signals should regularly be hitting the first yellow light and occasionally flicker the second yellow light Adjust the incoming signal levels if necessary Also make sure the LEC fea ture is enabled CAN T RECEIVE CALLS OR DIAL OUT Test with an Analog Phone If you can t receive calls or dial out it is most likely because the telephone line is from a digital PBX system or the remote control system is not properly connected Try connecting a regular analog telephone to the EF200 s line and make a call If the telephone will not work on that line it is probably a digital PBX line from an office system The EF200 needs a standard analog line You will need to get an analog phone line installed for the EF200 ASPI Digital The Sound of DSP 19 Try Dialing M anually Fix the Rem
58. s EF200 M essages The EF200 sends a RESTNV message in response to a command after it sends status messages for each of the settings that were changed by the restore operation if acknowledgment mode is enabled The EF200 has finished restoring the defaults Example In the following example the remote control device restores the default settings of the EF200 with Device ID number 12 The EF200 sends back an acknowledgment after the restore is complete Acknowledgment mode is enabled Er Oooo pe ASPI Digital The Sound of DSP 55 EF200 USER M ANUAL RING ENABLE DISABLE INCOMING RING MESSAGES Remote Commands EF200 M essages Example 56 The RING command enables or disables ring messages Ring messages RING are sent by the EF200 to the remote control device when an incoming ring is detected on the telephone line Also see the RING message and the TONER command The factory default setting for RING is 0 off The following commands can be sent by the remote control device to enable or dis able ring messages Disable incoming ring messages Enable incoming ring messages Toggle ring messages on or off Request status of ring messages The following messages are sent by the EF200 in response to a RING command or in response to any RING command when acknowledgment mode is on Ring messages are currently disabled Ring messages are currently enabled In the following example
59. s The numbers 0 9 the star and the pound digits are dialed as on a normal tele phone The comma character indicates that a 0 25 second pause should be inserted Multiple comma characters will insert a longer pause Other characters are ignored For instance the phone number 404 892 3200 is just as valid as 4048923200 If the EF200 is on hook when the DIAL command is sent it will automatically take itself off hook and wait for 0 75 seconds before dialing the digits The following command can be sent by the remote control device to dial one or more digits DIALs ame Dulihestiine Whee s wa smnnerupiesl the string s where s is a string of up to 32 digits containing the phone number The following message is sent by the EF200 in response to a DIAL command when acknowledgment mode is on The EF200 received the DIAL command The phone number is not returned in the acknowledg ment In the following example the remote control device speed dials an entire phone num ber and then the user pushes a couple of extra digits to navigate through a touch tone menu Acknowledgment mode is enabled T ROODIALS 1 404 8 404 aoopzrar 92 3200 AOODIAL2 faoopran Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE DTMF ENABLE DISABLE DTM F DETECTION The DTMF detection feature detects DTMF touch tone digits when the caller on the other end of the line pushes touch tone buttons It
60. s up and picks up if acknowledgment mode is on See the example below In the following example the remote control device send the FLASH command to the EF200 Acknowledgment mode is enabled Remote Command EF200 Message AO 6FLASH A0 6PHONEO AO 6PHONE1 Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE GAINA SET PHONE INPUT GAIN The GAINA command sets the phone input gain level of the EF200 to any level between 99 dB and 12 dB Notice that this command can only apply 12 dB of gain or up to 99 dB of attenuation The gain applied by GAINA is not seen by automatic gain control so changing GAINA will effectively change the AGC target level if AGC is enabled In most cases we recommend disabling AGC if GAINA is used The factory default setting for GAINA is 3 3 dB gain Remote Commands The following commands can be sent by the remote control device to set the phone input gain level Feninax Sepi wx ub between Ooand phone input gain to x dB between 99 and 12 GAINA Request current phone input gain EF200 M essages The following messages are sent by the EF200 in response to a GAINA command or in response to any GAINA command when acknowledgment mode is on Phone input gain is currently x dB Example In the following example the remote control device requests the current phone output gain of the EF200 with Device ID number 9 Then it sets a new level on the same EF200 Acknowledg
61. sary to make calls Calls can be received using only the front panel buttons The RS 232 port may be needed to con figure power on defaults in the non volatile memory during the installation process The To LINE and TO PHONE jacks are wider than RJ11 telephone jacks but the RJ11 connectors will still fit snugly Do not connect the telephone handset or telephone line to the ASPI Bus CONFIGURING THE NO N VO LATILE M EMORY 10 Note The EF200 has a non volatile memory which can store user customizeable default settings for the EF200 s features When the EF200 is powered on it will read the non volatile memory and initialize to these settings Once the unit is running the set tings may be changed by commands or logic port switches These changes won t affect the non volatile memory unless they are saved using the SAVENV command The EF200 must be turned on and connected to the RS 232 remote control device in order to configure the non volatile memory If the OVERRIDE EPROM switch is turned on changing the automatic gain control and noise suppression settings in the non volatile memory will have no effect In that case the EF200 will initialize to the automatic gain control and noise suppression set tings on the DIP switches Copyright 1998 All Rights Reserved INSTALLATION M aking C hanges Set each of the parameters to the desired values by sending RS 232 commands to the unit Table 2 lists the parameters that are stor
62. served do not connect E a The LOGIC IN OUT PORT should not be used at the same time as the RS 232 remote control or front panel buttons If you change the status of a command using RS 232 or the front panel the LOGIC IN OUT PORT switch will not change position This means the switches will not reflect the actual status of the EF200 which is confusing to the user While the RS 232 PORT and LOGIC IN OUT PORT can be used at the same time we don t recommend it due to this potential confusion The figure below shows what type of circuit should be used with the Logic In Out Port Any switch can be used for the inputs The outputs are 5V TTL outputs with a built in 220 Ohm resistor These can be used to drive most LEDs Of course we rec ommend using a blue LED for the privacy status 11 12 Hi 15 Figure 4 LOGIC IN OUT PORT circuit Copyright 1998 All Rights Reserved OPERATING THE EF200 OPERATING THE EF200 USING THE EF200 WITHOUT RS 232 CONTROL In order to use the EF200 without a remote control device you need access to the front panel buttons You also need a regular analog telephone handset which should be connected to the TO PHONE jack M aking a Call Follow these steps to make a call using the EF200 front panel and a handset 1 The EF200 should initially be on hook the PHONE CONNECT LED should not be lit 2 Pick up the handset and wait for a dial tone 3 Dial the phone number and na
63. sion feature improves the signal to noise ratio of the incoming tele phone speech by either 6 or 10 dB The NS command enables or disables this feature The NSL command selects between 6 and 10 dB of noise suppression Noise suppres sion is only applied to the incoming telephone audio The factory default setting for NS is 1 on The following commands can be sent by the remote control device to enable or dis able noise suppression Turn off noise suppression Toggle noise suppression on or off Request status of noise suppression The following messages are sent by the EF200 in response to an NS command or in response to any NS command when acknowledgment mode is on Noise suppression is currently off Noise suppression is currently on In the following example the remote control device requests the noise suppression status of the EF200 with Device ID number 12 Then it enables noise suppression on the same EF200 Acknowledgment mode is enabled A12NS1 A12NS1 Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE NSL SET NOISE SUPPRESSION LEVEL The noise suppression feature improves the signal to noise ratio of the incoming tele phone speech by either 6 or 10 dB The NS command enables or disables this feature The NSL command selects between 6 and 10 dB of noise suppression Noise suppres sion is only applied to the incoming telephone audio The factory default setting for NSL is 10 10 dB of
64. st device 3 Connect an ASPI Bus cable between the ASPI BUS OUT of the first device and the ASPI BUS IN of the second device 4 Connect the ASPI BUS OUT of the second device to the ASPI BUS IN of the third device and so on 5 Connect an ASPI Bus terminator to the ASPI BUS OUT of the last device in the chain Don t connect the phone to the ASPI Bus Front panel buttons and LOGIC IN OUT controls do not affect other devices on the ASPI Bus Only the local device is affected by its front panel interface MOUNTING THE EF200 Tabletop Installation Rackmount Installation 14 The EF200 can be mounted in a rack enclosure using the RS200 Rack Shelf available from ASPI Digital This shelf allows you to mount one or two EchoFree half rack devices such as the EF200 and EF400 in a single rack space Alternatively the EF200 can be installed on a tabletop The EF200 is equipped with four rubber feet that allow installation on a flat surface such as a tabletop 1 Remove the adhesive backing on the rubber feet 2 Install the rubber feet in the circular cutouts on the EF200 baseplate The RS200 Rack Shelf designed to rack mount ASPI Digital products is sold sepa rately from the EF200 1 Place the EF200 on the ASPI Digital RS200 Rack Shelf Copyright 1998 All Rights Reserved INSTALLATION Caution Caution Caution Caution Caution 2 Secure the EF200 to the RS200 shelf using four of the small screws 4
65. such a way as to interfere with the ventilation of the EF200 Consideration should be given to the connection of the equipment to the supply cir cuit and the effect that overloading of circuits could have on overcurrent protection and supply wiring Appropriate consideration of equipment nameplate ratings should be used when addressing this concern Reliable earthing of rack mounted equipment should be maintained Particular atten tion should be given to supply connections other than direct connection to the Branch use of power strips USING THE LOGIC IN OUT PORT The LOGIC IN OUT PORT allows remote control of many of the EF200 s features using contact closures switches It also has several output pins which can be used to drive LED status indicators The switches should be closed to enable a feature and opened to disable it When an LED is turned on it means the feature is enabled A ASPI Digital The Sound of DSP 15 16 Note EF200 USER M ANUAL list of the pins on the LOGIC IN OUT PORT and the features they control is shown below The ground pin 15 should be used with all contact closures and LEDs Table 3 LOGIC IN OUT PORT Pin Descriptions Pin WOw Fain AGC enable disable Noise Suppression enable disable Auto answer enable disable a oo ee E Phone connect disconnect 6 ron Remote amneoicomeet 83 Input Reserved do not connect 9 Output Reserved do not connect Reserved do not connect Re
66. t Applications Engineering ASPI Digital 1720 Peachtree St NW Suite 220 Atlanta GA 30309 2439 Phone 404 892 3200 Fax 404 892 2512 Email help aspi com Before contacting us please review the warranty and repair policy on page 24 ASPI Digital The Sound of DSP 21 EF200 USER M ANUAL TECHNICAL SPECIFICATIONS MECHANICAL SPECIFICATIONS Dimensions Weight Connectors ELECTRICAL SPECIFICATIONS Power Power Consumption To From AEC level To From Remote Level Output Impedance Input Impedance Headroom Hybrid Type Logic PERFORMANCE SPECIFICATIONS Phone Frequency Response Mixer Frequency Response Line Echo Cancellation LEC Tail Length Noise Suppression COMPLIANCE FCC Part 15 8 15 207mm W x 8 40 213mm L x 1 57 40mm H 1 2 rack unit 2 Ib 1 kg Audio Mini 3 5mm quick connect terminal blocks RS232 DB9M Logic In Out DB1SHDF ASPI Bus In Out Telephone Line Set RJ45 External transformer supplied 100 240VAC 47 63 Hz SW 20 dBu nominal balanced 4 dBu nominal adjustable from 20 to 4 dBu balanced 50 Ohms drives gt 600 Ohm inputs 10 kOhms 18 dB nominal Hybrid coil with automatic adapting DSP echo cancellation Normally open contact closure inputs normally low status outputs up to 10 mA high level drive at 3V 60 3800 Hz 1 dB 20 20 000 Hz 1 dB 40 dB total 60 dB 30 dB sec convergence rate 30 ms 6 dB or 10 dB selectable T
67. te end It has the same effect as pushing the REMOTE button on the front panel of the EF200 The setting for REMCON is always 0 off when the EF200 is reset Remote Commands The following commands can be sent by the remote control device to connect or dis connect the remote end Remote Command Effects REMCONO Disconnect the remote end REMCON1 Connect the remote end REMCON2 Toggle remote end between connect disconnect REMCON Request status of remote connection EF200 M essages The following messages are sent by the EF200 in response to a REMCON command or in response to any REMCON command when acknowledgment mode is on The remote end is currently disconnected The remote end is currently connected Example In the following example the remote control device requests the to remote connect status of the EF200 with Device ID number 12 Then it connects the remote end on the same EF200 Acknowledgment mode is enabled A12REMCON A12REMCONO A12REMCON1 A12REMCON1 ASPI Digital The Sound of DSP 53 EF200 USER M ANUAL RESETF RESTORE SETTINGS TO FACTORY DEFAULTS Remote Commands EF200 Messages Example 54 The RESETF command restores the EF200 s settings to the factory defaults This will not change the user defaults unless the SAVENV command is used to store the factory defaults as the power up settings See the SAVENV command for information about saving the defaults in non
68. to a PHONE command or in response to any PHONE command when acknowledgment mode is on The EF200 is currently on hook disconnected The EF200 is currently off hook connected In the following example the remote control device requests the on off hook status of the EF200 Then it takes the EF200 off hook Acknowledgment mode is enabled AO 6PHONE AO 6PHONI T EO E1 Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE PING SEE WHAT DEVICES ARE PRESENT Remote Commands EF200 Messages Example The PING command pings all of the devices on the ASPI Bus to find out what is connected to it Each device will respond with a PONG message which contains its device type and device ID This lets you know how many of each type of device is connected and what device ID it has Generally the PING command should be used with asterisks to query all devices or devices of a certain type For example P ING queries all devices on the bus while A P ING queries all EF200s on the bus The following command can be sent by the remote control device to find out what devices are connected to the ASPI Bus PING Requests a PONG message from the device The EF200 never sends a PING message but will send a PONG message in response to one see PONG In the following example the remote control device requests a PONG message from all EF200s on the ASPI Bus Two EF200s respond
69. tran does not cover sit to our service location alterations unauthorized repair failure to follow instruc tions misuse fire flood lightning acts of God or use in those countries where such use violates Part 779 of the Export Administration Regulations of the United States Department of Commerce If your ASPI Digital product is not covered by our warranty call us at 404 892 3200 or fax us at 404 892 2512 for advice about whether we will repair your ASPI Digital product and for other repair information including charges ASPI Digital in its sole discretion may replace rather than repair your ASPI Digital product with a new or reconditioned one of the same or similar design The repair or replacement is war ranted for 90 days The limited warranties and remedies set forth above are exclusive and in lieu of all other warranties whether oral or written express or implied ASPI Digital specifi cally disclaims any and all implied warranties including without limitation the war ranties of merchantability and fitness for a particular purpose No User Serviceable This product contains no user serviceable parts Please contact ASPI Digital for Parts repairs Attempts to repair this product by an unauthorized technician will void your warranty State Law Rights This limited warranty gives you specific legal rights and you amy have other rights that may vary from state to state ASPI Digital The Sound of DSP 25 EF200 USER M
70. ts it The DIMF message is never used as a command and will not be recognized by the EF200 as one The following message is sent by the EF200 in when it detects that a DTMF digit has been dialed on the opposite end of the telephone line DTMF digit n was detected In the following example the EF200 with Device ID 22 sends a series of messages in response to the caller dialing 12 Remote Command EF200 Message ASPI Digital The Sound of DSP 65 ERRO R ERROR MESSAGE The error messages report errors that the EF200 encounters These are usually com mand syntax errors The errors are numbered and the meaning of each error number is described below Error messages are enabled or disabled with the ERROR com Remote Commands EF200 Messages Example 66 mand EF200 USER M ANUAL The ERROR command should not be sent to the EF200 It s only used as a message from the EF200 The following messages are sent by the EF200 when it has an error ERROR 02 Invalid command data In the following example the remote control device tries to send a few invalid com mands to the EF200 with Device ID 6 The EF200 returns an error message in response to each of these commands Error messages are enabled AO 6PHONEG S A06 A06 A06ERROR 01 ERROR 02 Copyright 1998 All Rights Reserved EF200 COMMAND SET REFERENCE PO NG DEVICE RESPONSE TO PING COM
71. uble shooting if necessary LED bargraphs on the front panel which are useful for visual indication of audio levels and proper system operation EF200 USER M ANUAL INSTALLATION The installation process for the EF200 consists of the following steps Os ES Ge Prepare for installation below Configure the DIP switches on the rear panel page 7 Connect the EF200 to other equipment page 9 Configure the EF200 s non volatile memory if using RS 232 page 10 Calibrate the EF200 to other equipment in the system page 12 Mount the EF200 in a rack or on a tabletop page 14 PREPARING FOR INSTALLATION Reading the entire manual or at least the installation section before beginning the installation process will help you be more prepared for installation Also please make sure you have the correct equipment outlined below before you begin installa What s Included W hat s Not Included tion The EF200 product package includes the following items EF200 User Manual this manual EF200 Phone Add External Power Supply Warranty Registration Card The following equipment is not included with the EF200 product package but may be necessary to create a completely functional system Microphone s Loudspeaker s Audio amplifier or amplified loudspeaker EchoFree EF400 Acoustic Echo Canceller Audio cables Videoconferencing CODEC or other four wire interface optional Tape recorder or VCR optional
72. vigate through any touch tone menus if necessary 4 Push the PHONE button to give the EF200 control of the line The PHONE CON NECT light should turn on 5 Hang up the handset 6 The conversation may now begin Receiving a Call When someone is calling the telephone line to which the EF200 is connected the ana log handset connected to the TO PHONE jack will ring A ring tone will also be sent to the TO AEC and To REMOTE connector which may be heard by both parties Push the PHONE button to answer the call and give the EF200 control of the line The PHONE CONNECT light should turn on The conversation may begin immediately Ending a Call When the call is over you can end the call by pushing the PHONE button on the front panel The PHONE CONNECT light should turn off Also if the analog phone is off hook be sure to hang up the analog handset connected to the TO PHONE jack M uting the EF200 You can mute the EF200 by pushing the PRIVACY button on the front panel The PRI VACY ON light will turn on You can unmute the EF200 by pushing the button again When the PRIVACY ON light is on the FROM AEC signal is not sent to the phone out put or the remote side Warning The PRIVACY button on the EF200 front panel does not mute the audio going to the RECORD output on the EF400 If you want to prevent local speech from being recorded on a device connected to the EF400 use the MUTE contact closure on the EF400 rear panel USING THE EF200 wiTH

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