
MULTI-TECH SYSTEMS, INC.

MT5634ZLX

Card Type                    Modem
Chip Set                     Unidentified
Maximum Modem Rate           56Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.22, V.22bis, V.32ter, V.32bis, V.34,
                             K56flex
Fax Modulation Protocol      ITU-T V.17, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    I & II
Data Bus                     PCMCIA

                                                                      55295

                         SUPPORTED COMMAND SET

                           Basic AT Commands

  AT, +++, A/

  A, E, H, M, P, Q, T, V, W, X, Z

  &C, &F, &G, &P, &R, &V, &W, &Y, &Z

                          Extended AT Commands

  \A, \G, \J, \K, \V, \X



                              S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S30



  Note: See MHI Help File for full command documentation.

                         Proprietary AT Command Set

                            AUTO-MODE DETECTION

  Type:                  Configuration

  Format:                AT [cmds] Nn [cmds]

  Description:           Selects various options for the automatic
                         detection and negotiation of protocols during
                         the handshake process if the modem is
                         communicating with a remote modem of dissimilar
                         speed.

        Command                              Function

          N0             Auto-mode detection disabled. Handshake begins
                         at line speed designated by the S37 register. If
                         S37=0 handshake follows interface speed

          N1             Auto-mode detection enabled. Handshake begins at
                         line speed designated by the S37 register. If
                         S37=0 handshake at highest possible speed with
                         fallback to lower speed if necessary

                          COMMUNICATION PROTOCOLS

  Type:                  Configuration

  Format:                AT [cmds] Bn [cmds]

  Description:           Selects the communication protocol for data
                         calls

            Note: The B command allows the simultaneous selection of more
            than one suffix, enabling multiple protocols.

        Command                              Protocol

          B0             ITU-T V.22 at 1200bps or V.21 at 300bps

          B1             Bell 212A at 1200bps/Bell 103 at 300bps

          B2             ITU-T V.23 at 75/1200bps originate; 1200/75bps
                         answer

          B3             ITU-T V.23 at 1200/75bps answer; 75/1200bps
                         originate



                           DATA SET READY (DSR)

  Type:          Configuration

  Format:        AT [cmds] &Sn [cmds]

  Description:   Selects DSR options

    Command                              Function

      &S0        DSR forced high

      &S1        DSR high only while modem is connected

                         DATA TERMINAL READY (DTR)

  Type:             Configuration

  Format:           AT [cmds] &Dn [cmds]

  Description:      Selects modem response to DTR

     Command                              Function

       &D0          Modem does not respond to DTR

       &D1          Modem goes to command mode on DTR toggle

       &D2          Modem goes to command mode and disconnects (hangs up)
                    on DTR toggle;

                    Auto-Answer is disabled on low DTR.

       &D3          Modem is initialized on DTR toggle

                                   DIAL

  Type:                  Immediate

  Format:                AT [cmds] D<#> [cmds]

  Description:           Dials telephone number according to any
                         modifiers included in the string

  Note:                  Any combination of modifiers can be used to
                         produce the desired dial functions in sequence.

        Command                              Function

          DP             Pulse dialing enabled

          DR             Answer mode enabled; originate mode disabled
                         following handshake initiation.

          DSn            Dial stored telephone number n

          DT             Tone dialing enabled/Pulse dialing disabled

          DW             Dialing resumed following dial tone detection

          D,             Dialing paused for amount of time specified in
                         S8 register

          D!             Flash function initiated. Modem commanded to go
                         off-hook for specified time before returning
                         on-hook.

          D@             Wait for quiet Answer function enabled. Modem
                         waits until a "quiet answer," a ring-back signal
                         followed by silence up to the time specified in
                         S7, is received prior to executing the rest of
                         the dial string.

          D;             Modem returned to idle state after dialing. The
                         semicolon can only be placed at the end of the
                         dial command.

                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] &Kn [cmds]

  Description:   Enables flow control options

    Command                              Function

      &K0        Flow control disabled

      &K3        RTS/CTS flow control enabled

      &K4        XON/XOFF flow control enabled

                                 JACK TYPE

  Type:          Configuration

  Format:        AT [cmds] &Jn [cmds]

  Description:   Command non-functional; for compatability purposes only



                                  ON-LINE

  Type:           Immediate

  Format:         AT [cmds] On [cmds]

  Description:    Controls on-line command (data transmission) state
                  options.

            Note: The O command must be placed at the end of the command
            string.

     Command                             Function

       O0         On-line command mode with no retraining enabled

       O1         On-line command mode with retraining enabled

     O3-O14       Force modem to new rate defined by register S62

                              SPEAKER VOLUME

  Type:          Configuration

  Format:        AT [cmds] Ln [cmds]

  Description:   Controls speaker volume

    Command                              Function

       L0        Lowest volume setting

       L1        Low volume setting

       L2        Medium volume setting

       L3        Highest volume setting

                                TEST MODES

  Type:          Immediate

  Format:        AT [cmds] &Tn

  Description:   Selects test options

    Command                              Function

      &T0        End current test

      &T1        Begin local analog loopback test

      &T3        Begin local digital loopback

                            Extended AT Commands

                                COMPRESSION

  Type:          Configuration

  Format:        AT [cmds] %Cn [cmds]

  Description:   Selects data compression

    Command                              Function

      %C0        Data compression disabled

      %C1        MNP5 enabled

                               CONNECT MODE

  Type:          Configuration

  Format:        AT [cmds] \Nn [cmds]

  Description:   Controls the type of connection the modem will operate
                 in

    Command                              Function

      \N0        Normal mode enabled

      \N1        Direct mode enabled

      \N2        Reliable mode enabled

      \N3        Auto-reliable mode enabled

      \N4        V.42 reliable mode enabled



                             FLOW CONTROL TYPE

  Type:          Configuration

  Format:        AT [cmds] \Qn [cmds]

  Description:   Sets type of flow control used by modem

    Command                              Function

      \Q0        Flow control disabled

      \Q1        Bi-directional XON/XOFF flow control enabled

      \Q3        Bi-directional RTS/CTS flow control enabled

                             INACTIVITY TIMER

  Type:                  Configuration

  Format:                AT [cmds] \Tn [cmds]

  Range:                 0-90

  Unit:                  1 minute

  Description:           Sets the length of time that the modem does not
                         receive information before it disconnects.

                            S(STATUS) -REGISTERS

                              DCE LINE SPEED

  Type:                Register

  Format               AT [cmds] S37=n [cmds]

  Description:         Sets the maximum allowable data exchange rate
                       attempted during handshake process.

       Command                              Function

        S37=0          Speed of last connection

        S37=3          300bps

        S37=5          1200bps

        S37=6          2400bps

        S37=7          4800bps

        S37=8          7200bps

        S37=9          9600bps

       S37=10          12.0Kbps

       S37=11          14.4Kbps

       S37=12          16.8Kbps

       S37=13          19.2Kbps

       S37=14          21.6Kbps

       S37=15          24.0Kbps

       S37=16          26.4Kbps

       S37=17          28.8Kbps

       S37=18          33.6Kbps



                              DTE RATE STATUS

  Type:          Register

  Format         AT [cmds] S62=n [cmds]

  Description:   Sets the DTE rate status

    Command                              Function

     S62=0       300bps

     S62=1       600bps

     S62=2       1200bps

     S62=3       2400bps

     S62=4       4800bps

     S62=5       9600bps

     S62=6       7200bps

     S62=7       12.0Kbps

     S62=8       14.4Kbps

     S62=9       16.8Kbps

     S62=10      19.2Kbps

     S62=11      21.6Kbps

     S62=12      24.0Kbps

     S62=13      26.4Kbps

     S62=14      28.8Kbps

     S62=15      38.4Kbps

     S62=16      57.6Kbps

     S62=17      115.2Kbps

                            DTE TRANSFER SPEED

  Type:          Register

  Format         AT [cmds] S72=n [cmds]

  Description:   Sets the DTE speed during data transfer

    Command                              Function

     S72=0       Last auto-baud

     S72=1       300bps

     S72=2       600bps

     S72=3       1200bps

     S72=4       2400bps

     S72=5       4800bps

     S72=6       9600bps

     S72=7       7200bps

     S72=8       12.0Kbps

     S72=9       14.4Kbps

     S72=10      16.8Kbps

     S72=11      19.2Kbps

     S72=12      21.6Kbps

     S72=13      24.0Kbps

     S72=14      26.4Kbps

     S72=15      28.8Kbps

     S72=16      38.4Kbps

     S72=17      57.6Kbps

     S72=18      115.2Kbps



                             INACTIVITY TIMER

  Type:                 Register

  Format                AT [cmds] S89=n [cmds]

  Range:                0-65

  Default:              65

  Unit:                 .1 seconds

  Description:          Maximum duration of DTE and DCE inactivity
                        allowed prior to initiating stand-by mode

            Note: S30=0 disables the timer and allows indefinite
            inactivity.

                       TRANSMISSION LEVEL (JAPAN)

  Type          Register or Configuration

  Format        AT [cmds] S64=n [cmds]

  Range         9-20

  Default       15

  Unit          -1 dBm

  Description   Sets the signal level for transmission (Japan version)

