
DIAMOND MULTIMEDIA SYSTEMS, INC.

SUPRAEXPRESS 56

Card Type                    Modem, Fax
Chip Set                     Rockwell
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.32,
                             V.32bis, V.34

                             Rockwell 56K
Fax Modulation Protocol      ITU-T V.17, V.21, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    Class I
Data Bus                     External

                                                                      55028

                           SUPPORTED COMMAND SET

                             Basic AT Commands

  AT, +++, A/

  A, B, D, E, H, M, N, O, P, T, V, W, X, Y, Z

  &C, &P, &Q, &W, &Y, &Z

                           Extended AT Commands

  \N

  %C, %E, %G, %L

                                S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S24, S25, S26,
  S29, S30, S32, S33, S38

                             Special Commands

  #CID, +MS

  Note: See MHI Help File for full command documentation.

                         Proprietary AT Command Set

                 AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD

  Type:          Configuration

  Format:        AT [cmds] %En [cmds]

  Description:   Controls auto-retrain mode and fallback/fall-forward

    Command                              Function

      %E0        Auto-retrain disabled

      %E1        Auto-retrain enabled



























                                     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              NONE           Command 3         Command 1         Command 4

         &Q1, &Q4              Command 2         Command 3         Command 1         Command 4

         &Q2, &Q3              Command 1         Command 1         Command 1         Command 1

          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 is initialized after DTR goes off

                          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            Restore factory (PC) configuration; with
                         hardware flow control, error correction, and
                         data compression enabled

          &F1            Restore factory (Mac) default configuration,
                         with hardware flow control, error correction,
                         and data compression enabled

                                 FLASH ROM

  Type:          Configuration

  Format:        AT [cmds] ** [cmds]

  Description:   Set flash ROM code XMODEM upload mode

                               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 and XON/XOFF flow control enabled













                            LINE SIGNAL QUALITY

  Type:          Immediate

  Format:        AT [cmds] %Q [cmds]

  Description:   Returns a value which indicates line signal quality

    Command                              Function

      %Q0        Connection statistics

      %Q1        Data transfer statistics

      %Q2        Data transfer stats

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports maximum data carrier rate

       I1        Reports ROM checksum

       I2        Tests and reports ROM checksum

       I3        Reports ROM code revision number

       I4        Reports supported protocols, in encrypted format

       I5        Reports firmware copyright information

       I6        Reports country code for country PSTN signals

       I7        Reports DSP model and version code

       I9        PnP COMID string

      I10        Reports features supported by the modem

                               RESULT CODES

  Type:           Configuration

  Format:         AT [cmds] Qn [cmds]

  Description:    Enables modem to send result codes to the DTE

    Command                              Function

       Q0         Result code sending enabled

       Q1         Result code sending disabled

       Q2         Enables result code sending on originate; disable on
                  answer

                              SPEAKER VOLUME

  Type:          Configuration

  Format:        AT [cmds] Ln [cmds]

  Description:   Controls speaker volume

    Command                              Function

       L0        Speaker disabled

       L2        Medium volume setting

       L3        Highest volume setting











                            Special AT Commands

                           COUNTRY CODE DISPLAY

  Type:          Configuration

  Format:        AT [cmds] *NC? [cmds]

  Description:   Display country codes and configurations supported

                           COUNTRY CODES SELECT

  Type:          Configuration

  Format:        AT [cmds] *NCn [cmds]

  Description:   Select country code

    Command                              Function

     *NC000      United States

     *NC001      Austria

     *NC002      Belgium

     *NC003      Denmark

     *NC004      Finland

     *NC005      France

     *NC006      Germany

     *NC007      Ireland

     *NC008      Italy

     *NC010      Netherlands

     *NC011      Norway

     *NC012      Portugal

     *NC013      Spain

     *NC014      Sweden

     *NC015      Switzerland

     *NC016      United Kingdom

     *NC017      Greece

     *NC022      United States

     *NC040      Australia

     *NC043      Japan

     *NC047      Singapore

     *NC060      South Africa

     *NC061      Korea

                               DIALING CODES

  Type:          Configuration

  Format:        AT [cmds] *Zn [cmds]

  Description:   Change dialing codes

    Command                              Function

      *Z0        Use dial code 0

      *Z1        Use dial code 1







                            S(status) -REGISTERS

                          AUTOMATIC RATE ADAPTION

  Type:          Register

  Format         AT [cmds] S191=n [cmds]

  Default:       128

  Range:         0-255

  Description:   Sets the automatic rate adaption bias

                          BIT-MAPPED REGISTER S27

  Format              AT [cmds] S27=n [cmds]

  Default:            Unidentified

  Range:              0-111

  Unit:               Bit-mapped

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

   Bit      Value                          Function

    0              0  &M0/&Q0

                  1   &Q4

    0           1, 0  &M2/&Q2

               1, 1   &Q6

    1           0, 0  &M1/&Q1

               0, 1   &Q5

    2              0  Dial up line

                  1   Leased line

    4              0  Internal sync clock select

                  1   external sync clock select

    6              0  ITU

                  1   Bell

    7           128   Reserved





































                         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

       1 - 3          No failure - normal hang-up after fax connection

         4            Carrier signal lost

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

         6            Remote modem failed to respond to feature
                      negotiation

         7            Local modem is asynchronous-only, remote modem is
                      synchronous-only

         8            No common framing technique found

         9            No common protocol found

         10           Remote modem sent erroneous feature negotiation
                      message

         11           Remote modem failed to send synchronous information

         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

         15           Negotiated compression failed

         16           Line speeds selected in S37 and S109 did not match

         17           Time limit reached according to parameters set in
                      S116

         18           Time limit reached according to parameters set in
                      S30

         19           Long Space Disconnect (Y1) time limit reached

         20           Key abort

         21           V.42bis protocol violation

                                          DISPLAY CONTROL

  Type:                Register

  Format:              AT [cmds] S201=n [cmds]

  Description:         Controls the display

     Bit        Value                                    Function

      0               0   Carrier statistics disabled

                     1    Carrier statistics enabled

      1                   REJ or SREJ from occurrence is also shown

      2                   Reserved

      3               0   Rate re-negotiation display disabled

                     1    Rate re-negotiation display enabled

      4              0    Demo mode disabled

      5               0   LCD/LED update time fast

                     1    LCD/LED update time slow

      6                   Reserved

      7                   Reserved











                              DISPLAY CONTROL

  Type:                Register

  Format               AT [cmds] S194=n [cmds]

  Unit:                Bit-mapped

  Description:         Sets the display control

    Bit      Value                          Function

     0            1    Display basic mode

     1            2    Carrier stats, issue ATZ after clearing this
                       command to return to normal operation

     2            4    Reserved

     3             0   Rate renegotiation display disabled

                  1    Rate renegotiation display enabled

     4           16    Demo mode disabled

     5             0   LCD/LED Dwell time fast

                  1    LCD/LED Dwell time slow

     6           64    Reserved

     7          128    Reserved

                       ERROR CORRECTION NEGOTIATION

  Type:                 Register

  Format                AT [cmds] S36=n [cmds]

  Description:          Selects the action of the modem if it fails to
                        connect with the error-correction protocol set in
                        &Q.

        Command                             Function

         S36=0          Hang up

         S36=1          Attempt a direct connection

         S36=3          Reserved

         S36=4          Attempt a connection at MNP2-4; if that fails,
                        hang up.

         S36=5          Attempt a connection at MNP2-4; if that fails,
                        attempt a direct connection.

         S36=6          Reserved

         S36=7          Attempt a connection at MNP2-4; if that fails,
                        attempt a buffered connection.

                           EXTENDED RESULT CODES

  Type:                  Register

  Format                 AT [cmds] S95=n [cmds]

  Default:               0

  Range:                 0-255

  Unit:                  Bit-mapped

  Description:           Works in combination with the Wn command to
                         enable extended result codes. Features enabled
                         by S95 take precedence over the options selected
                         by Wn.

    Bit       Value                          Function

     0               1   CONNECT XXXX result code indicates DCE to DCE
                         rate instead of DTE to DTE rate

     1               2   Append/ARQ to CONNECT result code if EC is
                         active

     2               4   Enable CARRIER XXXX result code

     3               8   Enable PROTOCOL XXXX result code

     4              16   Undefined

     5              32   Enable compression result code

     6              64   Enable TX and RX V.34 CARRIER result code if in
                         asymmetric carrier mode

     7             128   Enable RINGING result code for ringback
                         detection

                                MINIMUM EQM

  Type:          Register

  Format:        AT [cmds] S190=n [cmds]

  Default:       20

  Range:         10-255

  Unit:          seconds

  Description:   Sets the minimum "good" EQM

                        SERIAL PnP FUNCTION CONTROL

  Type:            Register

  Format           AT [cmds] S193=n [cmds]

  Description:     Controls serial PnP function

   Bit    Value                           Function

    0          0   Serial PnP saved to NVRAM disabled

              1    Serial PnP saved to NVRAM enabled

    1              Reserved

    2              Reserved

    3              Reserved

    4              Reserved

    5              Reserved

    6              Reserved

    7              Reserved

                         SPECIAL FUNCTION CONTROL

  Type:              Register

  Format             AT [cmds] S192=n [cmds]

  Unit:              Bit-mapped

  Description:       Controls the special functions

   Bit      Value                          Function

    0            0   Silent answer snoop mode

                1    Standard

                     Fast

    1            0   Adaptive answer mode

                1    Attempt data carrier first, switch to fax mode if
                     not successful

                     Attempt data carrier first, switch to fax mode if
                     only CNG tone detected

    2            0   V.34 transmitter power reduction based on INFO1
                     sequence disabled
                1
                     V.34 transmitter power reduction based on INFO1
                     sequence enabled

    3            0   V.34 phase 4 TRN period disabled

                1    V.34 phase 4 TRN period enabled

    4            0   V.34 rate limiting after connection disabled

                1    V.34 rate limiting after connection enabled

    5            0   V.34 EQM threshold reduction for 3000 and 3429
                     symbol rates disabled
                1
                     V.34 EQM threshold reduction for 3000 and 3429
                     symbol rates enabled

    6            0   No action when possible false V.34 carrier is
                     detected
                1
                     Retrain when possible false V.34 carrier is detected

    7            0   Silent answer reason code off

                1    Silent answer reason code on

                            V.25bis COMMAND SET

                         CALL REQUEST WITH ADDRESS

  Type:          Immediate

  Format:        CRSn

  Description:   Dials the number stored in memory register n

                           CALL REQUESTED NUMBER

  Type:                   Immediate

  Format:                 CRN<#>

  Description:            Dials the number given; it will ignore spaces
                          and hyphens in the string; if the string is
                          more than fifty characters long, a result of
                          INV will be returned.

                          CONNECT INCOMING CALLS

  Type:                   Immediate

  Format:                 CIC

  Description:            Instructs the modem to answer an incoming call;
                          if no call is currently incoming, a result of
                          INV will be returned.

                          DISREGARD INCOMING CALL

  Type:                  Immediate

  Format:                DIC

  Description:           Instructs the modem to ignore the incoming call,
                         if the modem is set to automatically answer; if
                         no call is currently incoming, a result of INV
                         will be returned.

                              PROGRAM NUMBER

  Type:                  Configuration

  Format:                PRNn;<#> or PRNn

  Description:           Stores a phone number in memory address n; if
                         the number is more than fifty characters long, a
                         result of INV will be returned. If the second
                         form of this command is issued (i.e. with no
                         string to store), it will clear memory address
                         n.

                      REQUEST LIST OF DELAYED NUMBERS

  Type:                   Immediate

  Format:                 RLD

  Description:            Requests the list of delayed numbers from the
                          modem; this is a list of numbers that the modem
                          attempted to call and failed, and is not
                          allowed to call again until a set amount of
                          time has elapsed; this is usually to prevent
                          repeated dialing of a number (which could
                          indicate an attempted security breach.) If this
                          feature is not enabled, the modem will return
                          INV.

                     REQUEST LIST OF FORBIDDEN NUMBERS

  Type:                   Immediate

  Format:                 RLF

  Description:            Requests the list of forbidden numbers from the
                          modem; the modem is unable to dial numbers on
                          this list until its power has been cycled; if
                          this feature is not enabled, the modem will
                          return INV.

                          REQUEST LISTED NUMBERS

  Type:                   Immediate

  Format:                 RLI

  Description:            Requests the modem to return the list of stored
                          numbers; if no numbers are stored, the modem
                          will return LSN.

                       STANDARD AT# VOICE COMMAND SET

                             DISTINCTIVE RING

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

  Default:                Unidentified

  Range:                  0 - 7

  Description:            Selects which distinctive ring signals the
                          modem will respond to.

      Bit          Value                       Function

       0                 0   Do not respond to distinctive ring type 1.

                        1    Respond to distinctive ring type 1.

       1                2    Enables double rings and reports these as
                             RING 2 0.8s on, 0.4s off, 0.8s on, 0.4s off

       2                4    Enables triple rings and reports these as
                             RING 3 0.4s on, 0.2s off, 0.2s off, 4.0s off

                               LCD DISPLAYS

  Type:                  Configuration

  Format:                AT [cmds] #LCDn [cmds]

  Description:           Controls whether the DTE will allow the modem to
                         send a 1300Hz calling tone when originating

        Command                              Function

         #LCD0           "STRING mode disabled

         #LCD1           "STRING string is displayed on LCD line 1

         #LCD2           "STRING string is displayed on LCD line 2

                              MODE SELECTION

  Type:          Immediate

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

  Description:   Selects which mode the modem will operate in.

    Command                              Function

     #CLS=0      Modem will operate in data mode.

     #CLS=1      Modem will operate in fax class I mode.

     #CLS=2      Modem will operate in fax class II mode.

     #CLS=8      Modem will operate in voice mode.















                     SELECT DATA, FAX, OR VOICE/AUDIO

  Type:          Immediate

  Format:        AT [cmds] #CLSn [cmds]

  Description:   Selects data, fax, or voice/audio

    Command                              Function

     #CLS0       Select data mode

     #CLS1       Select class 1 fax

     #CLS2       Select class 2 fax

     #CLS8       Select voice/audio mode

     #CLS8       Select online voice command mode

                             TOTAL VOLUME GAIN

  Type:          Configuration

  Format:        AT [cmds] L:nn [cmds]

  Description:   Sets the total volume gain adjustment

    Command                              Function

     L:=00       Lowest gain

     L:=31       Highest gain

                               VOICE DEVICE

  Type:                  Configuration

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

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

  Note:                  This modem may not support all options listed
                         below. The #VLS? Command will display the
                         available options.

        Command                              Function

        #VLS=0           Telephone line and handset used for voice I/O.

        #VLS=1           Telephone handset used for voice I/O.

        #VLS=2           Internal speaker only used for voice I/O.

        #VLS=3           External microphone only used for voice I/O.

        #VLS=4           Telephone line and handset used for voice I/O;
                         internal speaker enabled.

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

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

        #VLS=7           Handset muted by disconnecting handset or
                         speakerphone from telephone line.

        #VLS=8           Connects caller ID relay for recording of
                         conversation over handset.

        #VLS=9           Connects handset (or speakerphone) to DSP chip
                         for recording or playback.























                               VOICE DEVICE

  Type:                  Configuration

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

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

  Note:                  This modem may not support all options listed
                         below. The #VLS? Command will display the
                         available options.

        Command                              Function

        #VLS=0           Telephone line and handset used for voice I/O.

        #VLS=1           Telephone handset used for voice I/O.

        #VLS=2           Internal speaker only used for voice I/O.

        #VLS=3           External microphone only used for voice I/O.

        #VLS=4           Telephone line and handset used for voice I/O;
                         internal speaker enabled.

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

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

        #VLS=7           Handset muted by disconnecting handset or
                         speakerphone from telephone line.

        #VLS=8           Connects caller ID relay for recording of
                         conversation over handset.

        #VLS=9           Connects handset (or speakerphone) to DSP chip
                         for recording or playback.

                          VOICE RING DETECT TIME

  Type:                  Configuration

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

  Default:               Unidentified

  Range:                 Unidentified

  Unit:                  Unidentified

  Description:           Sets the maximum time the modem will wait for
                         the remote station to ring before it assumes
                         that it went off-hook before it rang.

        Command                              Function

         #VLS=0          Disables the "ringback never came timer"

                          VOICE RING DETECT TIME

  Type:                  Configuration

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

  Default:               Unidentified

  Range:                 Unidentified

  Unit:                  Unidentified

  Description:           Sets the maximum time the modem will wait for
                         the remote station to ring before it assumes
                         that it went off-hook before it rang.

        Command                              Function

         #VRN=0          Turns off the ringback never came timer. After
                         dialing the modem sends VCON and immediately
                         enters online voice command control















                            V.25ter AT COMMANDS

                          ERROR CONTROL SELECTION

  Type:                  Configuration

  Format:                AT [cmds] +ESn, m, o, [cmds]

  Description:           Selects the error control setting

        Command                              Function

          n=0            Direct mode

          n=1            Buffered mode

          n=2            Initiate V.42 without detection

          n=3            Initiate V.42 with detection

          n=4            Alternate protocol (MNP)

          n=5            Initiate with synchronous mode

          n=6            Initiate with V.80 synchronous access mode

          m=0            Error control optional; if error control is not
                         established, maintain DTE-DCE data rate to match
                         line rate and use buffered mode with flow
                         control.

          m=1            Error control optional; if error control is not
                         established, change DTE-DCE data rate to match
                         line rate and use direct mode

          m=2            Error control required; if no LAPM, disconnect

          m=3            MNP required; if no MNP, disconnect

          o=0            Direct mode

          o=1            EC disabled, buffered mode

          o=3            EC optional; if no EC, use direct mode

          o=4            Error control required; if no EC, disconnect

          o=5            Error control optional; if no EC, disconnect

          o=6            MNP error control required, if no MNP,
                         disconnect

          o=7            Synchronous mode

          o=8            V.80 synchronous access mode.

                               INPUT BUFFER

  Type:          Configuration

  Format:        AT [cmds] Cn [cmds]

  Description:   Controls the input buffer size.

    Command                              Function

      n=0        10 - 759 bytes

      o=0        11 - 760 bytes

      p=0        Disables transmit level reporting

      q=0        Sets the lowest carrier rate that may be used

      r=0        Sets the maximum carrier rate that may be used

                              MANUFACTURER ID

  Type:          Configuration

  Format:        AT [cmds] +GMI [cmds]

  Description:   Displays the manufacturer ID





                                 MODEL ID

  Type:          Configuration

  Format:        AT [cmds] +GMM [cmds]

  Description:   Displays the model ID

                         REQUEST CAPABILITIES LIST

  Type:                  Configuration

  Format:                AT [cmds] +GCAP [cmds]

  Description:           Displays one or more lines of information
                         reporting the V.25ter commands available in the
                         modem

                                 ROM CODE

  Type:          Configuration

  Format:        AT [cmds] +GMRn, o, p, q, r [cmds]

  Description:   Display the ROM code

                             SELECTIVE REPEAT

  Type:            Configuration

  Format:          AT [cmds] +ESRn [cmds]

  Description:     Control selective repeat

     Command                             Function

      +ESR0        Do not use SREJ

      +ESR1        Use SREJ if available in remote DCE; continue without
                   it if not

                          SYNCHRONOUS ACCESS MODE

  Type:                  Configuration

  Format:                AT [cmds] +ESAn, m, o, p, q, r, s, t [cmds]

  Description:           Specifies the bit sequence transmitted by the
                         DCE when a transmit data buffer underrun
                         condition occures while operating in transparent
                         sub-mode

        Command                             Function

          n=0            In transparent sub-mode, the DCE transmits SYN1
                         on idle. DCE receiver does not seek
                         synchronization sequence

          n=0            In transparent sub-mode, the DCE transmits SYN1
                         on idle. DCE receiver seeks SYN1 as a
                         synchronization sequence

          m=0            In framed sub-mode, the DCE transmits HDLC flage
                         on idle

          m=0            In framed sub-mode, the DCE transmits marks on
                         idle

          o=0            In framed sub-mode, DCE transmits HDLC abort
                         when underrun during a frame

          o=0            In framed sub-mode, the DCE transmits HDLC flag
                         when underrun during a frame

          p=0            Half duplex V.34 carriers are not supported.
                         Value must be 0

          q=0            CRC generation and checking disabled



          r=0            NRZI encoding and decoding disabled

          r=0            NRZI encoding and decoding enabled

          s=0            Specifies the 8-bit transparent sub-mode
                         synchronization sequence and idle transmission
                         value.

          T=0            Specifies the 16-bit synchronization sequences
                         are not supported.

                         V.42bis DATA COMPRESSION

  Type:           Configuration

  Format:         AT [cmds] +DSn, m, o, p [cmds]

  Description:    Controls the V.42bis data compression

     Command                             Function

       n=0        Disabled

       n=1        Compression on transmit only

       n=2        Compression on receive only

       n=3        Bi-directional compression

       m=0        Do not require V>42bis compression when connecting

       o=0        V.43bis dictionary size for bi-directional compression

       o=1        V.42bis maximum dictionary size for bi-directional
                  compression

       p=0        Maximum V.42bis string size











