
MULTI-TECH SYSTEMS, INC.

MT64ISDN/C

Card Type      ISDN TA
Chip Set       Unidentified
Transfer Rate  56Kbps/64Kbps x 2
Data Bus       Unidentified
ISDN Protocols SAP, T-Link, V.120, PPP
Switch Types   5ESS, NI-1, DMS-100, NEC

                         Proprietary AT Command Set

                                                                      V2158

                                AUTO-ANSWER

  Type:          Configuration

  Format:        AT [cmds] _Jn [cmds]

  Description:   Selects whether the TA can auto-answer incoming calls.

    Command                              Function

      _J0         Auto-answer disabled.

      _J1         Auto-answer enabled.

                                AUTO-ANSWER

  Type:          Register

  Format:        AT [cmds] S0=n [cmds]

  Description:   Selects whether the TA can auto-answer incoming calls.

    Command                              Function

      S0=0        Auto-answer disabled.

      S0=1        Auto-answer enabled.

      S0=2        Auto-answer enabled only when DTR is high.

                          BIT-MAPPED REGISTER S14

  Format:             AT [cmds] S14=n [cmds]

  Default:            Unidentified

  Range:              60

  Description:        Controls command echo, result codes, and serial
                      port speed locking.

     Bit        Value                        Function

     1-0           00    Not used.

      2              0   Command echo enabled.

                    1    Command echo disabled.

      3              0   Result codes enabled.

                    1    Result codes disabled.

      4              0   Result codes in numeric form.

                    1    Result codes in verbose form.

      5              0   Local serial port speed follows connect speed.

                    1    Local serial port speed locked.

                                BONDED CALL

  Type:          Register

  Format:        AT [cmds] S59=n [cmds]

  Description:   Selects whether the TA will attempt to make a bonded
                 call.

    Command                              Function

     S59=3        Call bonding disabled.

     S59=5        Call bonding enabled.

                      BONDED CALL - ANSWERING TIMEOUT

  Type:                  Register

  Format:                AT [cmds] S44=n [cmds]

  Default:               10

  Range:                 0 - 255

  Unit:                  1 second

  Description:           Sets the time when answering a call that the TA
                         will wait for the remote TA to send the bond
                         negotiation before it disconnects.

                      BONDED CALL - CAPACITY TIMEOUT

  Type:                  Register

  Format:                AT [cmds] S45=n [cmds]

  Default:               5

  Range:                 0 - 255

  Unit:                  1 second

  Description:           Sets the time that the TA will wait to agree
                         with the remote TA on channel capacities before
                         it disconnects.

                    BONDED CALL - EQUALIZATION TIMEOUT

  Type:                  Register

  Format:                AT [cmds] S43=n [cmds]

  Default:               50

  Range:                 0 - 255

  Unit:                  1 second

  Description:           Sets the time that the TA will wait for the two
                         channels of a bonded call to be equalized before
                         it disconnects.

                    BONDED CALL - FRAME PATTERN TIMEOUT

  Type:                  Register

  Format:                AT [cmds] S41=n [cmds]

  Default:               10

  Range:                 0 - 255

  Unit:                  1 second

  Description:           Sets the time that the TA will wait during the
                         bond frame pattern before it disconnects.

                     BONDED CALL - ORIGINATION TIMEOUT

  Type:                  Register

  Format:                AT [cmds] S40=n [cmds]

  Default:               10

  Range:                 0 - 255

  Unit:                  1 second

  Description:           Sets the time when originating a call that the
                         TA will wait for the remote TA to send the bond
                         negotiation before it disconnects.

                     BONDED CALL - SECOND CALL TIMEOUT

  Type:                  Register

  Format:                AT [cmds] S42=n [cmds]

  Default:               50

  Range:                 0 - 255

  Unit:                  1 second

  Description:           Sets the time that the TA will wait for the
                         second call of a bonded call to be completed
                         before it disconnects.

                                 CALL TYPE

  Type:          Register

  Format:        AT [cmds] S53=n [cmds]

  Description:   Selects what type of call is to be made.

    Command                              Function

     S53=0        Speech call.

     S53=1        Audio call.

     S53=2        56Kbps data call.

     S53=3        64Kbps data call.

                                 CD SIGNAL

  Type:          Configuration

  Format:        AT [cmds] &Cn [cmds]

  Description:   Controls the behaviour of the CD signal.

    Command                              Function

      &C0         CD forced high.

      &C1         CD normal.

      &C2         CD forced low on disconnect.

      &C3         CD forced low when there is no connection.

                                 CD SIGNAL

  Type:          Register

  Format:        AT [cmds] S33=n [cmds]

  Description:   Controls the behaviour of the CD signal.

    Command                              Function

     S33=0        CD forced high.

     S33=1        CD normal.

     S33=2        CD forced low on disconnect.

     S33=3        CD forced low when there is no connection.

                               CLOCK SOURCE

  Type:          Register

  Format:        AT [cmds] S76=n [cmds]

  Description:   Selects where the TA derives the transmit clock.

    Command                              Function

     S76=0        TA uses internal clock source.

     S76=1        DTE generates clock source.

                            CLOCK SOURCE - ISDN

  Type:          Configuration

  Format:        AT [cmds] _Xn [cmds]

  Description:   Selects where the TA derives the ISDN U clock.

    Command                              Function

      _X0         TA uses network as clock source.

      _X1         TA generates clock source.

                            CLOCK SOURCE - ISDN

  Type:          Register

  Format:        AT [cmds] S51=n [cmds]

  Description:   Selects where the TA derives the ISDN U clock.

    Command                              Function

     S51=0        TA uses network as clock source.

     S51=1        TA generates clock source.

                                COMMAND SET

  Type:          Immediate

  Format:        AT [cmds] _Un [cmds]

  Description:   Selects the command set that will be used.

    Command                              Function

      _U0         Command sets disabled.

      _U1         AT command set enabled.

      _U2         V.25bis command set enabled.

                             COMMAND SET - AT

  Type:          Immediate

  Format:        AT [cmds] S55=n [cmds]

  Description:   Selects the command set that will be used.

    Command                              Function

     S55=2        AT command set enabled.

     S55=3        AT command set disabled.

                               CONNECT TIME

  Type:               Register

  Format:             AT [cmds] S7=n [cmds]

  Default:            Unidentified

  Range:              0-240

  Unit:               1 second

  Description:        Selects the amount of time the TA will wait for an
                      outgoing call to connect.

                                CTS SIGNAL

  Type:          Configuration

  Format:        AT [cmds] &Rn [cmds]

  Description:   Controls the behaviour of the CTS signal.

    Command                              Function

      &R0         CTS follows RTS.

      &R1         CTS forced high.

                                CTS SIGNAL

  Type:          Register

  Format:        AT [cmds] S30=n [cmds]

  Description:   Controls the behaviour of the CTS signal.

    Command                              Function

     S30=0        CTS follows RTS.

     S30=1        CTS forced high.

                                DATA LENGTH

  Type:          Configuration

  Format:        AT [cmds] _Wn [cmds]

  Description:   Selects the length of the data word.

    Command                              Function

      _W0         7 bit word length.

      _W1         8 bit word length.

                                DATA LENGTH

  Type:          Configuration

  Format:        AT [cmds] S72=n [cmds]

  Description:   Selects the length of the data word.

    Command                              Function

     S72=0        8 bit word length.

     S72=1        7 bit word length.

                                DATA PARITY

  Type:          Configuration

  Format:        AT [cmds] _On [cmds]

  Description:   Selects the format of the parity bit.

    Command                              Function

      _O0         Even parity.

      _O1         Mark parity.

      _O2         Odd parity.

      _O3         No parity.

                                DATA PARITY

  Type:          Configuration

  Format:        AT [cmds] S73=n [cmds]

  Description:   Selects the format of the parity bit.

    Command                              Function

     S73=0        No parity.

     S73=1        Odd parity.

     S73=2        Even parity.

                                 DATA STOP

  Type:          Configuration

  Format:        AT [cmds] _Qn [cmds]

  Description:   Selects the number of stop bits.

    Command                              Function

      _Q0         One stop bit.

      _Q1         Two stop bits.

                                 DATA STOP

  Type:          Configuration

  Format:        AT [cmds] S74=n [cmds]

  Description:   Selects the number of stop bits.

    Command                              Function

     S74=0        One stop bit.

     S74=1        One and a half stop bits.

     S74=2        Two stop bits.

                            DIAL STORED NUMBER

  Type:          Immediate

  Format:        AT [cmds] DTSn [cmds]

  Description:   Dials the number stored in memory location n.

                             DISPLAY CALLER ID

  Type:          Immediate

  Format:        AT [cmds] &Nn [cmds]

  Description:   Reads the remote TAs telephone number.

    Command                              Function

      &N1         Reads the remote TAs first SPID.

      &N2         Reads the remote TAs second SPID.

                           DISPLAY STORED NUMBER

  Type:          Register

  Format:        AT [cmds] SS8n? [cmds]

  Description:   Displays the number stored in memory location n.

                                DSR SIGNAL

  Type:          Configuration

  Format:        AT [cmds] &Sn [cmds]

  Description:   Controls the behaviour of the DSR signal.

    Command                              Function

      &S0         DSR forced high.

      &S1         DSR normal.

      &S2         DSR forced low when there is no connection.

      &S3         DSR forced low in Dialup mode.

                                DSR SIGNAL

  Type:          Register

  Format:        AT [cmds] S32=n [cmds]

  Description:   Controls the behaviour of the DSR signal.

    Command                              Function

     S32=0        DSR forced high.

     S32=1        DSR normal.

     S32=2        DSR forced low when there is no connection.

     S32=3        DSR forced low in Dialup mode.

                          DSR SIGNAL - TEST MODE

  Type:           Immediate

  Format:         AT [cmds] _Cn [cmds]

  Description:    Controls the behaviour of the DSR signal when in a test
                  mode.

     Command                             Function

       _C0        DSR forced low.

       _C1        DSR forced high.

                                DTR SIGNAL

  Type:           Configuration

  Format:         AT [cmds] &Dn [cmds]

  Description:    Controls the behaviour of the DTR signal.

    Command                              Function

      &D0         DTR forced high.

      &D1         TA enters command mode when DTR goes low.

      &D2         TA hangs up and returns to command mode when DTR goes
                  low.

                                DTR SIGNAL

  Type:               Register

  Format:             AT [cmds] S34=n [cmds]

  Description:        Controls the behaviour of the DTR signal.

       Command                              Function

        S34=0          DTR forced high.

        S34=1          TA enters command mode when DTR goes low.

        S34=2          TA hangs up and returns to command mode when DTR
                       goes low.

        S34=4          TA hangs up on an incoming call and returns to
                       command mode when DTR goes low.

        S34=8          TA hangs up on an outgoing call and returns to
                       command mode when DTR goes low.

                                 ECHO TONE

  Type:          Register

  Format:        AT [cmds] S56=n [cmds]

  Description:   Selects whether an echo tone will be used.

    Command                              Function

     S56=0        Echo tone disabled.

     S56=1        Echo tone enabled on answer only.

     S56=2        Echo tone enabled on originate only.

     S56=3        Echo tone enabled.

                               ERROR COUNTER

  Type:               Immediate

  Format:             AT [cmds] _Vn [cmds]

  Description:        Increments or clears the error counter for test
                      modes.

      Command                              Function

        _V0           Clears the error counter.

        _V1           Increments the error counter by introducing an
                      error into the test pattern.

                       ESCAPE SEQUENCE - OUT OF BAND

  Type:          Immediate

  Format:        <BREAK> AT [cmds]<CR>

  Description:   Puts the modem in Command Mode.

  Notes:         Do not precede this command with AT.

                 <BREAK> refers to the hardware modem break signal.

                             FLOW CONTROL TYPE

  Type:          Configuration

  Format:        AT [cmds] \Qn [cmds]

  Description:   Selects the type of flow control that will be used.

    Command                              Function

      \Q0         Flow control disabled.

      \Q1         XON/XOFF flow control enabled.

      \Q2         CTS flow control enabled.

      \Q3         RTS/CTS flow control enabled.

                              INCOMING CALLS

  Type:          Register

  Format:        AT [cmds] S58=n [cmds]

  Description:   Selects which calls the TA will answer.

    Command                              Function

     S58=0        All calls will be answered.

     S58=1        Only calls from stored numbers will be answered.

                                    LDN

  Type:          Configuration

  Format:        AT [cmds] _Nn [cmds]

  Description:   Selects which LDN will be used.

    Command                              Function

      _N0         Select LDN 1.

      _N1         Select LDN 2.

                                 LDN 1 SET

  Type:          Configuration

  Format:        AT [cmds] SS62=<#> [cmds]

  Description:   Sets the first LDN.

                                 LDN 2 SET

  Type:          Configuration

  Format:        AT [cmds] SS63=<#> [cmds]

  Description:   Sets the second LDN.

                                 LINE TYPE

  Type:          Configuration

  Format:        AT [cmds] &Ln [cmds]

  Description:   Selects the type of line the TA is connected to.

    Command                              Function

      &L0         Standard dial-out ISDN.

      &L1         Leased-line ISDN.

      &L2         Leased-line ISDN, dial backup enabled.

                                 LINE TYPE

  Type:          Configuration

  Format:        AT [cmds] S50=n [cmds]

  Description:   Selects the type of line the TA is connected to.

    Command                              Function

     S50=0        Standard dial-out ISDN.

     S50=1        Leased-line ISDN.

                          LOCAL SERIAL PORT SPEED

  Type:          Configuration

  Format:        AT [cmds] %Kn [cmds]

  Description:   Selects the speed of the serial port.

    Command                              Function

      %K0         Selects 300bps speed.

      %K1         Selects 1200bps speed.

                          LOCAL SERIAL PORT SPEED

  Type:          Configuration

  Format:        AT [cmds] S71=n [cmds]

  Description:   Selects the speed of the serial port.

    Command                              Function

     S71=1        Selects 300bps speed.

     S71=3        Selects 1200bps speed.

     S71=6        Selects 2400bps speed.

     S71=8        Selects 4800bps speed.

     S71=11       Selects 9600bps speed.

     S71=15       Selects 19.2Kbps speed.

     S71=17       Selects 38.4Kbps speed.

     S71=18       Selects 48Kbps speed.

     S71=19       Selects 56Kbps speed.

     S71=20       Selects 57.6Kbps speed.

     S71=21       Selects 64Kbps speed.

     S71=22       Selects 112Kbps speed.

     S71=23       Selects 115.2Kbps speed.

     S71=24       Selects 128.8Kbps speed.

                      LOCK SERIAL PORT SPEED - T-LINK

  Type:                  Configuration

  Format:                AT [cmds] Ln [cmds]

  Description:           Selects whether the TA will negotiate the serial
                         port speed when using the T-Link protocol.

        Command                              Function

           L0             Serial port speed locked.

           L1             TA will negotiate serial port speed.

                               LOOPBACK TEST

  Type:          Register

  Format:        AT [cmds] S57=n [cmds]

  Description:   Selects what types of loopback tests the TA will use.

    Command                              Function

     S57=0        Loopback testing disabled.

     S57=1        TA will perform DDS latching loopback test.

     S57=2        TA will perform V.54 loopback test.

     S57=3        TA will perform V.54 and DDS latching loopback tests.

                                PRODUCT ID

  Type:          Register

  Format:        AT [cmds] S78=n [cmds]

  Description:   Sets the Product ID.

                                 PROTOCOL

  Type:          Register

  Format:        AT [cmds] S54=n [cmds]

  Description:   Selects what type of protocol the TA will use.

    Command                              Function

     S54=1        TA will use clear channel.

     S54=2        TA will use Bonding Mode 1.

     S54=3        TA will use SAP.

     S54=4        TA will use T-Link.

     S54=6        TA will use V.120.

     S54=9        TA will use 57.6Kbps asynchronous.

     S54=11       TA will fall back to common protocol.

     S54=12       TA will use PPP.

                         RESET TO FACTORY DEFAULTS

  Type:             Immediate

  Format:           AT [cmds] &Fn [cmds]

  Description:      Resets the TAs configuration to one of the factory
                    default setups.

     Command                              Function

       &F0          Resets to default configuration.

       &F1          Resets to 56Kbps synchronous setup.

       &F2          Resets to 64Kbps synchronous setup.

       &F3          Resets to 112Kbps synchronous setup.

       &F4          Resets to 128Kbps synchronous setup.

       &F5          Resets to 128Kbps leased-line setup.

       &F6          Resets to 128Kbps LDM Master setup.

       &F7          Resets to 57.6Kbps asynchronous setup.

       &F8          Resets to 115.2Kbps asynchronous setup.

       &F9          Resets to 57.6Kbps asynchronous setup with fallback.

                           RESULT CODES - SPEED

  Type:           Register

  Format:         AT [cmds] S22=n [cmds]

  Description:    Selects whether CONNECT messages will display connect
                  speed.

     Command                             Function

      S22=0       Speed will not be displayed.

     S22=224      Speed will be displayed.

                             RTS TO CTS DELAY

  Type:          Configuration

  Format:        AT [cmds] _Dn [cmds]

  Description:   Selects the delay when CTS follows RTS.

    Command                              Function

      _D0         Set delay to 1ms.

      _D1         Set delay to 18ms.

                             RTS TO CTS DELAY

  Type:          Register

  Format:        AT [cmds] S31=n [cmds]

  Description:   Selects the delay when CTS follows RTS.

    Command                              Function

     S31=0        Set delay to 1ms.

     S31=1        Set delay to 18ms.

                                   SPID

  Type:          Configuration

  Format:        AT [cmds] _In [cmds]

  Description:   Selects which SPID will be used.

    Command                              Function

      _I0         Select SPID 1.

      _I1         Select SPID 2.

                                SPID 1 SET

  Type:          Configuration

  Format:        AT [cmds] SS60=<#> [cmds]

  Description:   Sets the first SPID.

                                SPID 2 SET

  Type:          Configuration

  Format:        AT [cmds] SS61=<#> [cmds]

  Description:   Sets the second SPID.

                          STORE NUMBER IN MEMORY

  Type:          Register

  Format:        AT [cmds] SS8n=<#> [cmds]

  Description:   Stores a number in memory location n.

                                SWITCH TYPE

  Type:          Configuration

  Format:        AT [cmds] _Sn [cmds]

  Description:   Selects what type of switch the TA is connected to.

    Command                              Function

      _S0         5ESS switch type.

      _S1         DMS100 switch type.

      _S2         National type 1 switch.

      _S3         NEC switch type.

                                SWITCH TYPE

  Type:          Configuration

  Format:        AT [cmds] S52=n [cmds]

  Description:   Selects what type of switch the TA is connected to.

    Command                              Function

     S52=0        5ESS switch type.

     S52=1        DMS100 switch type.

     S52=2        National type 1 switch.

     S52=3        NEC switch type.

                              SYNC/ASYNC MODE

  Type:          Immediate

  Format:        AT [cmds] &Qn [cmds]

  Description:   Selects synchronous or asynchronous mode.

    Command                              Function

      &Q0         Selects asynchronous mode.

      &Q2         Selects synchronous mode.

                              SYNC/ASYNC MODE

  Type:          Immediate

  Format:        AT [cmds] S70=n [cmds]

  Description:   Selects synchronous or asynchronous mode.

    Command                              Function

     S70=0        Selects asynchronous mode.

     S70=2        Selects synchronous mode.

                                TEST MODES

  Type:           Immediate

  Format:         AT [cmds] &Tn [cmds]

  Description:    Puts the TA into test modes.

     Command                              Function

       &T0         Ends test in progress.

       &T1         Displays all test errors.

       &T2         Displays totals on tests.

       &T3         Begins local loopback test.

       &T4         Begins network loopback test.

       &T5         Begins protocol loopback test.

       &T6         Begins remote loopback test.

       &T7         Begins remote test.

       &T8         Denies request for remote loopback test.

       &T9         Grants request for remote loopback test.

      &T10         Grants request for remote V.54 loopback test.

      &T11         Grants request for remote DDS latching and V.54
                   loopback test.

      &T12         Displays near- and far-end block error information.

                                TEST STATUS

  Type:          Register (Read-only)

  Format:        AT [cmds] S49? [cmds]

  Description:   Reports the status of the self-test.

     Value                                Meaning

       0          Self-test passed.

       1          Self-test detected an error in ROM.

       2          Self-test detected an error in RAM.

