
MULTI-TECH SYSTEMS, INC.

MT5600DSVD

Card Type                          Modem
Chip Set                           Unidentified
I/O Options                        25-pin serial port, power, line in,
                                   line out, microphone in, speaker jack
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.27ter, V.29
Error Correction/Compression       MNP5, V.42, V.42bis
Fax Class                          Unidentified
Data Bus                           External

[Image]

                                CONNECTIONS

        Function           Label             Function              Label

  Line in (RJ-11)               CN1      Microphone in              CN5

  Line out (RJ-11)              CN2      Speaker jack               CN6

  25-pin serial port            CN3      Power switch               SW1

  Power jack                    CN4

                        USER CONFIGURABLE SETTINGS

                    Function                      Label      Position

  Stereo speaker mode enabled                     J10         Closed

  Mono speaker mode enabled                       J10          Open





                             DIAGNOSTIC LED(S)

   LED         Color           Status                Condition

   TD       Unidentified      Blinking        Modem transmitting data

   TD       Unidentified        Off         Modem not transmitting data

   RD          Unidentified   Blinking        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 or
                                                     V.PCM mode

   56       Unidentified        Off           Modem is not connected in
                                               K56flex or V.PCM mode

   33       Unidentified         On         Modem connected in V.34 mode
                                              at speeds up to 33.6Kbps

   33       Unidentified        Off        Modem is not connected in V.34
                                           mode at speeds up to 33.6Kbps

   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, P, Q, T, V, W, X, Y, Z

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

                           Extended AT Commands

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

  %C, %E, %L, %Q

                             Special Commands

  -K, #CID

                                S Registers

  S0, S1, S2, S3, S4, S5, S6 S7, S8, S9, S10, S11, S12, S18, S24, S25,
  S29, S32, S33, S38

                              Voice Commands

  #CLS, #MDL?, #MFR?, #REV?

  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

            Note: The action each variant of &D causes depends on the setting of &Q

        &Q Setting                &D0               &D1               &D2               &D3

       &Q0, &Q5, &Q6           Command 0         Command 1         Command 2         Command 4

         &Q1, &Q4              Command 3         Command 1         Command 2         Command 2

         &Q2, &Q3              Command 2         Command 2         Command 2         Command 2

          Command                                          Function

         Command 0          Modem does not respond to DTR

         Command 1          Modem goes to command mode after DTR goes is off

         Command 2          Modem goes to command mode and disconnects (hangs up) after DTR goes
                            off; Auto-Answer is disabled.

         Command 3          Modem goes to command mode and disconnects (hangs up) after DTR goes
                            off; Auto-Answer is not disabled

         Command 4          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

          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.

          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

                            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)



                            REPORT INFORMATION

  Type:           Immediate

  Format:         AT [cmds] In [cmds]

  Description:    Displays information requested

     Command                             Function

       I0         Reports default speed and controller firmware code

       I1         Reports ROM checksum

       I2         Tests and reports ROM checksum

       I3         Reports default speed and controller firmware code

       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

                             TRANSMIT CARRIER

  Type:          Configuration

  Format:        AT [cmds] Cn [cmds]

  Description:   Controls the transmit carrier switching

    Command                              Function

       C1        Transmit carrier enabled

                            Extended AT Commands

                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] \Gn [cmds]

  Description:   Command nonfunctional; for compatibility purposes only

    Command                              Function

      \G0        Returns OK for backward compatibility

                            PCM CODE SELECTION

  Type:          Configuration

  Format:        AT [cmds] %Un [cmds]

  Description:   Determines the PCM code type for 56K modulation

    Command                              Function

      %U0        m -law encoding enabled (North America & Japan)

      %U1        A -law encoding enabled (Europe)



                              SPECIAL COMMANDS

                             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

                           MODULATION SELECTION

  Type:                  Configuration

  Format:                AT [cmds] +MS=x,y,z,a [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=12           V.90, fallback to K56flex. .V.34 . .V.32bis,
                         etc..

          x=13           K56flex, fallback to V.90. .V.34. .V.32bis,
                         etc..

          x=64           Bell 103

          x=69           Bell 212A

                               VOICE COMMANDS

                              DATA/DSVD MODE

  Type:          Configuration

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

  Description:   Selects data or DSVD mode

    Command                              Function

     -SMS=0      Data mode

     -SMS=1      DSVD mode

     -SMS=3      Automatic mode selection

                                 DSVD MODE

  Type:          Configuration

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

  Description:   Select whether the modem will use DSVD mode.

    Command                              Function

     -SSE=0      DSVD mode disabled.

     -SSE=1      DSVD mode enabled.



                               VOICE DEVICE

  Type:          Configuration

  Format:        AT [cmds] #VLS=n [cmds]

  Description:   Selects the I/O device for the DSP chip.

    Command                              Function

     #VLS=5      Headset used for voice I/O.

     #VLS=6      Speakerphone used for voice I/O.

                      VOICE - LOCAL SERIAL PORT SPEED

  Type:           Configuration

  Format:         AT [cmds] #BDR=n [cmds]

  Range:          0-48

  Unit:           2400bps

  Description:    Sets the speed of the local serial port when in voice
                  mode.

                            S(STATUS) -REGISTERS

                         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

                             INACTIVITY TIMER

  Type:                  Register

  Format                 AT [cmds] S30=n [cmds]

  Range:                 0-255

  Unit:                  10 ms

  Description:           Maximum duration of DTE and DCE inactivity
                         allowed prior to initiating hang-up process.

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

                             V.25 CALLING TONE

  Type:                Register

  Format               AT [cmds] S35=n [cmds]

  Range:               0-1

  Unit:                Decimal

  Description:         Enables V.25 data calling tone, which allows
                       remote data/fax/voice discrimination

            Note: S35=0 disables V.25 data calling tone.





