
MULTI-TECH SYSTEMS, INC.

MT5600ZDXV

Card Type                      Modem
Chip Set                       Unidentified
I/O Options                    25-pin serial port, power, line in, line out
Maximum Modem Rate             56Kbps
Maximum Fax Rate               14.4Kbps
Data Modulation Protocol       Bell 103/212A

                               ITU-T V.21, V.22, V.22bis, V.23, V.32ter,
                               V.32bis, V.34, K56flex
Fax Modulation Protocol        ITU-T V.17, V.27ter, V.29
Error Correction/Compression   MNP5, V.42, V.42bis
Fax Class                      I & II
Data Bus                       External

[Image]

                                            CONNECTIONS

                 Function                  Label                   Function                   Label

  Power connector                           CN1    Line out (RJ-11)                           CN3

  25-pin serial port                        CN2    Line in (RJ-45 connector)                  CN4

                                         DIAGNOSTIC LED(S)

    LED         Color        Status                             Condition

    TD       Unidentified   Blinking                     Modem transmitting data

    TD       Unidentified     Off                      Modem not transmitting data

    RD            UnidentifiBlinking                     Modem is receiving data

    RD       Unidentified     Off                      Modem is not receiving data

    CD       Unidentified      On                        Carrier signal detected

    CD       Unidentified     Off                      Carrier signal not detected

    56       Unidentified      On                    Modem connected in K56flex mode

    56       Unidentified     Off                Modem is not connected in K56flex mode

    28       Unidentified      On                     Modem connected in V.34 mode

    28       Unidentified     Off                  Modem is not connected in V.34 mode

    14       Unidentified      On              Modem connected in V.32bis mode at 14.4Kbps

    14       Unidentified     Off          Modem is not connected in V.32bis mode at 14.4Kbps

    OH       Unidentified      On                           Modem is on-hook

    OH       Unidentified     Off                           Modem is off-hook

    TR            Unidentified On                          DTR signal is high

    TR       Unidentified     Off                           DTR signal is low

    EC       Unidentified      On                Modem is set for V.42 error compression

    EC       Unidentified     Off              Modem is not set for V.42 error compression

    EC       Unidentified   Blinking                    Data compression enabled

    FX            Unidentified On                         Modem is in Fax mode

    FX       Unidentified     Off                       Modem is not in Fax mode



                           SUPPORTED COMMAND SET

                             Basic AT Commands

  AT, +++, A/

  A, B, E, H, M, O, Q, V, W, X, Y, Z

  &C, &G, &T, &W, &Y, &Z

                           Extended AT Commands

  \A, \B, \K, \N, \V

  %C, %E, %L, %Q

                             Special Commands

  -K, #CID

                                S Registers

  S0, S1, S2, S3, S4, S6, S7, S8, S9, S10, S11, S12, S18, S21, S24, S25,
  S29, S30, S32, S33,

  S38, S91, S92, S95

  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

                            COMMUNICATIONS MODE

  Type:          Configuration

  Format:        AT [cmds] &Mn [cmds]

  Description:   Selects communications mode

    Command                                Mode

      &M0        Asynchronous mode

                            COMMUNICATIONS MODE

  Type:           Configuration

  Format:         AT [cmds] &Qn [cmds]

  Description:    Selects communications mode options

    Command                                Mode

      &Q0         Asynchronous mode, serial port speed follows connect
                  speed.

      &Q5         Error correction mode

      &Q6         Buffered asynchronous mode



                 CONFIGURATION PROFILES & CALL STATISTICS

  Type:                  Immediate

  Format:                AT [cmds] &V [cmds]

  Description:           Displays active and stored configuration
                         profiles & statistics for last connection

        Command                              Function

          &V0            Displays the active configuration, the two
                         stored user profiles, and the first four phone
                         numbers

          &V1            Displays statistics for last connection

                           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        DTR ignored

      &D1        DTR drop causes online command mode

      &D2        DTR drop causes modem to go on-hook

      &D3        Resets on low DTR

                                   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

          DL             Re-dial last number

          DP             Pulse dialing enabled

         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.

          DV             Switch to speakerphone

          D$             Calling card "Bong" detection enabled

          D^             Data calling tone transmission disabled



                          FACTORY DEFAULT PROFILE

  Type:             Configuration

  Format:           AT [cmds] &F [cmds]

  Description:      Sets values in active profile to values found in the
                    default profile

     Command                              Function

       &F0          Load factory configuration 0

       &F1          Load factory configuration 1

                               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

      &K5        Transparent XON/XOFF flow control enabled

      &K6        Both RTS/CTS & XON/XOFF flow control enabled

                                 JACK TYPE

  Type:          Configuration

  Format:        AT [cmds] &Jn [cmds]

  Description:   Command non-functional; for compatibility only

                                 LINE TYPE

  Type:          Configuration

  Format:        AT [cmds] &Ln [cmds]

  Description:   Command non-functional; for compatibility only

                            REPORT INFORMATION

  Type:           Immediate

  Format:         AT [cmds] In [cmds]

  Description:    Displays information requested

     Command                             Function

       I0         Reports product code

       I1         Reports ROM checksum

       I2         Tests and reports ROM checksum

       I3         Reports firmware version and application codes

       I4         Reports OEM identifier string in either binary or ASCII
                  format

       I5         Reports country code

       I6         Reports data pump model and internal code

       I7         Reports country code

                              SPEAKER VOLUME

  Type:          Configuration

  Format:        AT [cmds] Ln [cmds]

  Description:   Controls speaker volume

    Command                              Function

       L0        Low volume setting

       L1        Low volume setting

       L2        Medium volume setting

       L3        Highest volume setting



                              SPECIAL COMMANDS

                                 BLACKLIST

  Type:              Immidiate

  Format:            AT [cmds] *B [cmds]

  Description:       Displays blacklisted numbers. If no numbers are
                     blacklisted, returns OK.

                                   DELAY

  Type:                   Immidiate

  Format:                 AT [cmds] *D [cmds]

  Description:            Displays delayed numbers with the delay
                          associated with each. If no numbers are
                          delayed, returns OK.

                             DISTINCTIVE RING

  Type:          Immediate

  Format:        AT [cmds] -SDR=n [cmds]

  Description:   Selects the distinctive ring settings

    Command                              Function

     -SDR=0      Distinctive ring disabled

     -SDR=1      Type 1 enabled

     -SDR=2      Type 2 enabled

     -SDR=3      Type 1 and 2 enabled

     -SDR=4      Type 3 enabled

     -SDR=5      Type 1 and 3 enabled

     -SDR=6      Type 2 and 3 enabled

     -SDR=7      Type 1, 2, and 3 enabled

                               FLASH MEMORY

  Type:          Configuration

  Format:        AT [cmds] **n [cmds]

  Description:   Controls download to flash memory

    Command                              Function

      **0        Downloads last sensed speed into flash memory

      **1        Downloads 38.4Kbps into flash memory

      **2        Downloads 57.6Kbps into flash memory

                             MNP10 - FALLBACK

  Type:          Configuration

  Format:        AT [cmds] -Qn [cmds]

  Description:   Command non-functional; for compatibility only

                         MNP10 - LINK NEGOTIATION

  Type:          Configuration

  Format:        AT [cmds] *Hn [cmds]

  Description:   Command non-functional; for compatibility only

                        MNP10 - POWER LEVEL ADJUST

  Type:          Configuration

  Format:        AT [cmds] )Mn [cmds]

  Description:   Command non-functional; for compatibility only



                        MNP10 - POWER LEVEL ADJUST

  Type:                Configuration

  Format:              AT [cmds] -SEC=n [cmds]

  Range:               0-30

  Unit:                -1dBm

  Description:         Controls automatic transmit power level adjustment
                       during MNP 10 link negotiation

       Command                              Function

       -SEC=0          MNP10 disabled. Transmission level is set in the
                       S91 register

  -SEC=1, [tx_lev]     MNP10 enabled. Set transmit level

                           MODULATION SELECTION

  Type:                  Configuration

  Format:                AT [cmds] +MS=x [cmds]

  Description:           Sets options for active protocol; the transfer
                         rates specified by z and a must be valid for the
                         protocol selected. +MS? queries setting

        Command                              Function

          x=0            V.21

          x=1            V.22

          x=2            V.22bis

          x=3            V.23

          x=9            V.32

          x=10           V.32bis

          x=11           V.34

          x=56           K56flex

          x=64           Bell 103

          x=69           Bell 212A

                         PLUG & PLAY SERIAL NUMBER

  Type:          Immediate

  Format:        AT [cmds] %7n [cmds]

  Range:         8

  Unit:          Hexidecimal

  Description:   Sets and stores numbers for serial plug & play

                  PLUG & PLAY VENDOR ID & PRODUCT NUMBER

  Type:          Immediate

  Format:        AT [cmds] %8n [cmds]

  Range:         3 (ASCII), 4 (hex)

  Unit:          ASCII, Hexidecimal

  Description:   Sets and stores numbers for serial plug & play

                       TRANSMISSION LEVEL - CELLULAR

  Type:          Configuration

  Format:        AT [cmds] @Mn [cmds]

  Range:         0-30

  Unit:          -1dBm

  Description:   Command non-functional; for compatibility only

                        V.32 - COMPROMISE EQUALIZER

  Type:          Configuration

  Format:        AT [cmds] :En [cmds]

  Description:   Command non-functional; for compatibility only



                            S(STATUS) -REGISTERS

                            BACKSPACE CHARACTER

  Type:          Register

  Format         AT [cmds] S5=n [cmds]

  Range:         0-127

  Unit:          ASCII

  Description:   Selects a character used for backspace <BS>

            Note: A value greater than 32 will disable backspace

                          BIT-MAPPED REGISTER S14

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

  Range:              0-174

  Unit:               Bit-mapped

  Description:        Controls echo, result codes and display, dial mode,
                      and answer/originate mode.

   Bit       Value                         Function

    0             0   Not used

    1              0  Command echo disabled

                  1   Command echo enabled

    2              0  Result codes enabled

                  1   Result codes disabled

    3              0  Display result codes in numeric format

                  1   Display result codes in verbose format

    4             0   Not used

    5              0  Tone dial enabled

                  1   Pulse dial enabled

    6             0   Not used

    7           0 1   Answer mode enabled

                      Originate mode enabled

                          BIT-MAPPED REGISTER S22

  Format                 AT [cmds] S22=n [cmds]

  Range:                 0-255

  Unit:                  Bit-mapped

  Description:           Controls speaker volume and controls, limits
                         results codes, and pulse dial make/break ratio.

    Bit       Value                          Function

   1, 0             00   Off volume

                    01   Low level volume

                    10   Medium level volume

                   11    High level volume

   3, 2             00   Speaker off

                    01   Speaker off on carrier

                    10   Speaker always on

                   11    Speaker on during handshake

   6 - 4           000   Basic result codes only enabled

                   100   Basic and connection speed result codes enabled

                   101   Basic and connection speed result codes and
                         dialtone detection enabled
                   110
                         All result codes except dialtone detection
                  111    enabled

                         All result codes enabled

     7              0    Not used



                          BIT-MAPPED REGISTER S23

  Format                AT [cmds] S23=n [cmds]

  Range:                0-189

  Unit:                 Bit-mapped

  Description:          Grants/denies remote digital loopback, controls
                        DTE rate and parity, and sets guard tone.

    Bit       Value                         Function

     0              0   Remote digital loopback denied

                   1    Remote digital loopback allowed

   3 - 1          000   Sets serial port speed to 0-300bps

                  001   Sets serial port speed to 600bps

                  010   Sets serial port speed to 1200bps

                  011   Sets serial port speed to 2400bps

                  100   Sets serial port speed to 4800bps

                  101   Sets serial port speed to 9600bps

                  110   Sets serial port speed to 19.2Kbps

                 111    Sets serial port speed to 38.4Kbps or higher

   5, 4            00   Parity even

                   01   Space Parity

                   10   Parity odd

                  11    Mark or No Parity

   7, 6            00   Guard tone disabled

                   01   Guard tone 550Hz enabled

                  10    Guard tone 1800Hz enabled

                          BIT-MAPPED REGISTER S27

  Format               AT [cmds] S27=n [cmds]

  Range:               0-111

  Unit:                Bit-mapped

  Description:         Selects synchronous/asynchronous mode, line type,
                       clock source, and ITU-T/Bell modes.

   Bit       Value                          Function

  3, 1,           00   Asynchronous mode, serial port speed follows
    0                  connect speed
                  01
                       Asynchronous off-line command mode and synchronous
                  10   connect mode

                 11    Asynchronous off-line command mode; modem
                       autodials first number in directory, then
                       synchronous connect mode

                       Asynchronous off-line command mode on low DTR,
                       synchronous connect mode on high DTR

    2              0   Switched line

                  1    Leased line

  5, 4            00   Local modem generates transmit clock source

                  01   Local DTE generates transmit clock source

                 10    Remote DCE/DTE generates transmit clock source

    6              0   ITU/T mode

                  1    Bell mode

    7             0    Not Used



                          BIT-MAPPED REGISTER S28

  Format           AT [cmds] S28=n [cmds]

  Range:           0-31

  Unit:            Bit-mapped

  Description:     Controls pulse dialing.

   Bit    Value                           Function

  4, 3        00   39ms make/61ms break at 10pps

              01   33ms make/67ms break at 10pps

              10   39ms make/61ms break at 20pps

             11    33ms make/67ms break at 20pps

                          BIT-MAPPED REGISTER S31

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

  Range:              0-10

  Description:        Select automode, extended result code format and
                      caller ID functions

     Bit        Value                        Function

      0              0    Not used

      1               0   Auto-mode detection disabled

                     1    Auto-mode detection enabled

     3, 2            00   Enables CONNECT result codes to report DTE
                          speed
                     01
                          Full reporting of CONNECT result codes
                    10
                          Enables CONNECT result codes to report DCE
                          speed

     5, 4             0   Caller ID disabled

                      1   Short formatted Caller ID enabled

                     2    Long unformatted Caller ID enabled

                          BIT-MAPPED REGISTER S40

  Format                 AT [cmds] S40=n [cmds]

  Range:                 0-255

  Unit:                  Bit-mapped

  Description:           Controls power level and break handling; selects
                         MNP extended services, link negotiation, and
                         block size.

    Bit       Value                          Function

   1, 0              0   MNP Extended Services disabled

                    1    MNP Extended Services enabled

     2              0    Not used

  5, 4, 3          000   AT\K0

                   001   AT\K1

                   010   AT\K2

                   011   AT\K3

                   100   AT\K4

                  101    AT\K5

   7, 6             00   MNP block size is 64 characters

                    01   MNP block size is 128 characters

                    10   MNP block size is 192 characters

                   11    MNP block size is 256 characters



                          BIT-MAPPED REGISTER S41

  Format           AT [cmds] S41=n [cmds]

  Range:           Unidentified

  Unit:            Bit-mapped

  Description:     Selects compression, auto-retrain, and MNP mode.

   Bit    Value                           Function

  1 - 0       00   Data compression disabled

              01   MNP5 enabled

              10   V.42bis enabled

             11    MNP5 and V.42bis enabled

    2          0   Auto-retrain, fallback/fall-forward disabled

              1    Auto-retrain, fallback/fall-forward enabled

   3-5        0    Not Used

    6          0   Auto-retrain enabled

              1    Auto-fallback/fall-forward enabled

    7         0    Not Used

                         CONNECTION FAILURE CODES

  Type:               Register

  Format              AT [cmds] S86? [cmds]

  Description:        Reports codes which correspond to the possible
                      causes of a connection failure

       Value                                Meaning

         0            Normal hang up

         4            Carrier signal lost

         5            No error-control detected for remote modem during
                      feature negotiation

         9            No common protocol found

         12           No failure - remote modem disconnected normally

         13           Remote modem failed to respond after 10
                      re-transmissions same message

         14           Violation of negotiated protocol caused failure

                              DCE LINE SPEED

  Type:                  Register

  Format                 AT [cmds] S37=n [cmds]

  Description:           Sets the maximum allowable data exchange rate
                         attempted during handshake process. For
                         compatibility only, use +MS to set line speed

                       ERROR CORRECTION NEGOTIATION

  Type:                      Register

  Format                     AT [cmds] S36=n [cmds]

  Description:               Selects the action of the modem if it fails
                             to connect when error control is selected.

      Command               S48=7                      S48=128

       S36=0        LAPM or hang-up          Not used

       S36=1        LAPM or Asynchronous     Asynchronous

       S36=2        LAPM or hang-up          Not used

       S36=3        LAPM or Asynchronous     Asynchronous

       S36=4        LAPM, MNP, or hang-up    MNP or hang-up

       S36=5        LAPM, MNP, or            MNP or Asynchronous
                    Asynchronous

       S36=6        LAPM, MNP, or hang-up    MNP or hang-up

       S36=7        LAPM, MNP, or            MNP or Asynchronous
                    Asynchronous



                       ERROR CORRECTION/COMPRESSION

  Type:           Register

  Format:         AT [cmds] S46=n [cmds]

  Description:    Selects active error correction and compression
                  protocols

    Command                              Function

    S46=136       Error correction only, no compression

    S46=138       Error correction with V.42bis data compression

                            FEATURE NEGOTIATION

  Type:                   Register

  Format:                AT [cmds] S48=n [cmds]

  Description:           Selects active error correction and compression
                         protocols. See S36, error correction negotiation
                         table

        Command                              Function

         S48=0            Detection negotiation disabled

         S48=7            Detection negotiation enabled

        S48=128           Fall-back to options set in S36

                               FLOW CONTROL

  Type:          Register

  Format         AT [cmds] S39? [cmds]

  Description:   Displays the current flow control

     Value                               Meaning

       0         Flow control disabled

       3         RTS/CTS flow control enabled

       4         XON/XOFF flow control enabled

       5         Transparent XON/XOFF flow control enabled

       6         Both RTS/CTS & XON/XOFF flow control enabled

                                TEST MODES

  Type:              Register

  Format:            AT [cmds] S16=n [cmds]

  Range:             0-125

  Unit:              Bit-mapped

  Description:       Controls loopback tests, analog, digital, remote
                     digital, and self tests.

   Bit      Value                          Function

    0            0   Local analog loopback not in progress

                1    Local analog loopback in progress

    1           0    Not used

    2            0   Local digital loopback not in progress

                1    Local digital loopback in progress

    3            0   Modem not in remote digital loopback

                1    Remote digital loopback in progress

    4            0   Remote digital loopback not requested

                1    Remote digital loopback requested

    5            0   Remote digital loopback w/ self-test not in progress

                1    Remote digital loopback w/ self-test in progress

   6-7          0    Not used









