
MULTI-TECH SYSTEMS, INC.

MT56128ZLX-NT, MT56128ZLX-ST

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

                             ITU-T V.21, V.22, V.22bis, V.23, V.32bis,
                             V.34, K56flex
ISDN Data Rate               128Kbps
ISDN Modulation Protocol     V.110, V.120, X.75, ML-PPP, PPP
Error Correction/Compression Unidentified
Data Bus                     PCMCIA

                                                                      55291

                   SUPPORTED COMMAND SET

                     Basic AT Commands

  AT, +++

  A, E

  &F, &V, &Z



  Note: See MHI Help File for full command documentation.

                         Proprietary AT Command Set

                              CONVERSION LINK

  Type:          Configuration

  Format:        AT [cmds] &N0=n [cmds]

  Description:   Loads user profiles into active RAM

    Command                              Function

     &N0=0       Set single-link mode for async to sync PPP conversion

     &N0=1       Set multi-link mode for async to sync PPP conversion

                                   DIAL

  Type:                  Immediate

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

  Description:           Dials ISDN 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

          DSn            Dial stored telephone number n

           DM            Modem calls over ISDN line

           DT            Dials out the ISDN number

           DV            ISDN voice calls enabled

           DL            Re-dial last ISDN number



                               HOOK CONTROL

  Type:          Immediate

  Format:        AT [cmds] Hn [cmds]

  Description:   Selects ISDN disconnect

    Command                              Function

       H0        Modem commanded to go on-hook (hang-up)

       H1        Modem commanded to disconnect ISDN voice calls

       H3        Modem commanded to disconnect ISDN data & voice calls

       H4        Restarts ISDN layer 2 link

       H5        View responses

                                ISDN/ANALOG

  Type:          Configuration

  Format:        AT [cmds] &Gn [cmds]

  Description:   Toggles between ISDN and analog phone link

    Command                              Function

      &G0        Switch from ISDN link to analog line

      &G1        Switch from analog to ISDN link

                             LOAD USER PROFILE

  Type:          Configuration

  Format:        AT [cmds] &Ln [cmds]

  Description:   Loads user profiles into active RAM

    Command                              Function

      &L0        Load user profile 0 into active RAM

      &L1        Load user profile 1 into active RAM

      &L2        Load user profile 2 into active RAM

      &L3        Load user profile 3 into active RAM

      &L4        Load user profile 4 into active RAM

      &L5        Load user profile 5 into active RAM

      &L6        Load user profile 6 into active RAM

      &L7        Load user profile 7 into active RAM

      &L8        Load user profile 8 into active RAM

      &L9        Load user profile 9 into active RAM

                                  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

                      PHONE NUMBERS IN MULTI-LINK PPP

  Type:          Configuration

  Format:        AT [cmds] &Jn [cmds]

  Description:   Selects 1 or 2 ISDN phone numbers for Multi-Link PPP
                 calls

    Command                              Function

      &J0        2 ISDN phone numbers selected for multi-link PPP calls

      &J1        1 ISDN phone number selected for multi-link PPP calls



                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I3        OK

                        RESTORE PROFILE ON POWER-UP

  Type:               Configuration

  Format:             AT [cmds] &Pn [cmds]

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

      Command                              Function

        &P0           Restore profile 0 on power-up

        &P1           Restore profile 1 on power-up

        &P2           Restore profile 2 on power-up

        &P3           Restore profile 3 on power-up

        &P4           Restore profile 4 on power-up

        &P5           Restore profile 5 on power-up

        &P6           Restore profile 6 on power-up

        &P7           Restore profile 7 on power-up

        &P8           Restore profile 8 on power-up

                           STORE ACTIVE PROFILE

  Type:            Configuration

  Format:          AT [cmds] &Wn [cmds]

  Description:     Writes the values for the active profile into the
                   non-volatile RAM

     Command                              Function

       &W0         Write the active profile to stored profile 0

       &W1         Write the active profile to stored profile 1

       &W2         Write the active profile to stored profile 2

       &W3         Write the active profile to stored profile 3

       &W4         Write the active profile to stored profile 4

       &W5         Write the active profile to stored profile 5

       &W6         Write the active profile to stored profile 6

       &W7         Write the active profile to stored profile 7

       &W8         Write the active profile to stored profile 8

       &W9         Write the active profile to stored profile 9

                              V.110 DATA RATE

  Type:          Configuration

  Format:        AT [cmds] Bn [cmds]

  Description:   Selects the user rate in V.110 mode

    Command                              Protocol

       B0        600bps

       B1        1200bps

       B2        2400bps

       B3        4800bps

       B4        9600bps

       B5        19.2Kbps

       B6        38.4Kbps

       B7        48.0Kbps

       B8        57.6Kbps (Japan only)



                              VERIFY HARDWARE

  Type:          Immidiate

  Format:        AT [cmds] &Kn [cmds]

  Description:   Verifies TA hardware

    Command                              Function

      &K0        Verifies TA hardware. Reports OK or BAD

                              Special Commands

                              B-CHANNEL SPEED

  Type:          Configuration

  Format:        AT [cmds] !Q=n [cmds]

  Description:   Selects B-channel speed

    Command                              Function

      !Q=0       B-channel set to 64Kbps

      !Q=4       B-channel set to 56Kbps

                           DATA DIRECTORY NUMBER

  Type:          Configuration

  Format:        AT [cmds] !N1=n [cmds]

  Range:         0 - 24

  Unit:          0 - 9, *, #

  Description:   Sets the directory number (DN) 1 for the data channel

                           DATA DIRECTORY NUMBER

  Type:          Configuration

  Format:        AT [cmds] !N0=n [cmds]

  Range:         0 - 24

  Unit:          0 - 9, *, #

  Description:   Sets the directory number (DN) 0 for the data channel

                                 DATA SPID

  Type:               Configuration

  Format:             AT [cmds] !C6=n [cmds]

  Range:              0 - 20

  Unit:               ASCII

  Description:        Specifies the data service profile identifier 0
                      assigned by the ISDN provider

                                 DATA SPID

  Type:               Configuration

  Format:             AT [cmds] !C2=n [cmds]

  Range:              0 - 20

  Unit:               ASCII

  Description:        Specifies the data service profile identifier 1
                      assigned by the ISDN provider



                          ISDN D-CHANNEL PROTOCOL

  Type:          Configuration

  Format:        AT [cmds] !C0=n [cmds]

  Description:   Selects network switch type

    Command                              Function

     !C0=0       AT&T 5ESS

     !C0=1       Northern Telecom DMS-100

     !C0=2       Euro-ISDN NET3

     !C0=5       VN4

                          RATE ADAPTION PROTOCOL

  Type:            Configuration

  Format:          AT [cmds] !Z=n [cmds]

  Description:     Select rate adaption protocol used to communicate with
                   another TA

     Command                              Function

      !Z=5         V.120

      !Z=6         V.110

                         VOICE-GRADE CALL HANDLING

  Type:          Configuration

  Format:        AT [cmds] !V=n [cmds]

  Description:   Controls voice grade call handling

    Command                              Function

      !V=0       Incoming voice grade calls are answered by ISDN phone

      !V=1       Incoming voice grade calls are answered by modem

      !V=2       Audio speech enabled

      !V=4       m -law encoding enabled (Europe)

      !V=5       A -law encoding enabled (North America)





