
MULTI-TECH SYSTEMS, INC.

MT3400ZLX

Card Type                    Modem, Fax
Chip Set                     Unidentified
Maximum Modem Rate           33.6Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.32bis, V.34, V34bis
Fax Modulation Protocol      ITU-T V.17, V29, V.27ter
Error Correction/Compression MNP5, V.42bis
Fax Class                    Class I & II
Data Bus                     PCMCIA

                                                                      54717

                         SUPPORTED COMMAND SET

                           Basic AT Commands

  AT, A/

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

  &C, &F, &G, &R, &V, &W, &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             In originate mode, handshake begins at line
                         speed designated by the S37 register and the B
                         command

          N1             In originate mode, handshake begins at line
                         speed designated by the S37 register. and the B
                         command. Modem can shift to a slower speed if
                         necessary.

                          AUTOSYNC COMPATIBILITY

  Type:          Configuration

  Format:        AT [cmds] &J [cmds]

  Description:   Dummy command for autosync compatibility

    Command                              Function

      &J0        Send OK to DTE

                            COMMUNICATIONS MODE

  Type:          Configuration

  Format:        AT [cmds] &Mn [cmds]

  Description:   Selects communications mode

    Command                                Mode

      &M0        Asynchronous mode

                          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 or Bell 103 at 300bps

          B2             Deselects V.23 reverse channel

          B3             Deselects V.23 reverse channel

          B16            V.21 at 300bps

                           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 after DTR goes is off

          &D2            Modem goes to command mode and disconnects
                         (hangs up) after DTR goes off; Auto-Answer is
                         disabled.

          &D3            Modem is initialized after DTR goes off

                                   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             Reverse dial. Originate call in answer mode

         DS=n            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 to CTS flow control enabled

      &K4        XON/XOFF flow control enabled

                                  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 a new rate that is user defined by S62
                   regisiter

                            PULSE DIALING RATIO

  Type:           Configuration

  Format:         AT [cmds] &Pn [cmds]

  Description:    Selects pulse dial make/break ratio

    Command                              Function

      &P0         39/61ms at 10pps (North America) or 33/67 (Japanese
                  version)

      &P1         33/67ms at 10pps (Europe) or 20pps (Japanese version)

                        RESTORE PROFILE ON POWER-UP

  Type:               Configuration

  Format:             AT [cmds] &Yn [cmds]

  Description:        Restores a selected profile into the active profile
                      on power-up (hard reset)

      Command                              Function

        &Y0           Restore profile 0 on power-up

                                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

                            V.32 - AUTO-RETRAIN

  Type:            Configuration

  Format:          AT [cmds] &Bn [cmds]

  Description:     Controls auto-retrain function if poor line quality is
                   detected

     Command                             Function

       &B1         Auto-retrain enabled if line quality is poor

       &B2         Auto-retrain disabled; modem tolerates any line

                              Special Commands

                                COMPRESSION

  Type:          Configuration

  Format:        AT [cmds] %Cn [cmds]

  Description:   Selects data compression

    Command                              Function

      %C0        Data compression disabled

      %C1        MNP5 compression 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

      \N4        V.42 or MNP 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 second

  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          Connects at last speed

        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 maximum allowable data exchange rate
                       attempted during handshake process.

       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 maximum allowable data transfer speed

    Command                              Function

     S72=0       300bps

     S72=1       600bps

     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] S46=n [cmds]

  Range:                 0-255

  Unit:                  1 second

  Description:           Sets the length of time that the modem does not
                         receive information before it goes into standby
                         mode; S46=255 will disable. Default is 100.

                                POWER LEVEL

  Type:          Register

  Format:        AT [cmds] S64=n [cmds]

  Range:         9-20

  Unit:          1dBm

  Description:   Transmission level power adjustment.

  Note:          This register is only available in the Japanese version.

