
DIAMOND MULTIMEDIA SYSTEMS, INC.

SUPRAFAX MODEM 288I

Card Type                    Fax, Modem (asynchronous)
Chip Set                     Rockwell
Maximum Data Rate            28.8Kbps
Maximum Fax Rate             14.4Kbps
Data Bus                     8-bit ISA
Fax Class                    Class I & II
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.21, V.22, V.22bis, V.23, V.32,
                             V.32bis, V.34

                             Rockwell V.FC
Fax Modulation Protocol      ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression MNP5, MNP10, V.42, V.42bis

[Image]

                                CONNECTIONS

        Function           Label             Function              Label

  Line out/in -                CN1      Line in/out -               CN2
  Unidentified                          Unidentified

            SERIAL PORT ADDRESS

    Setting        SEL/0          SEL/1

  COM1 (3F8h)       Open          Open

  COM2 (2F8h)      Closed         Open

  COM3 (3E8h)       Open         Closed

  COM4 (2E8h)      Closed        Closed

                      INTERRUPT

  Setting    IRQ/2      IRQ/3      IRQ/4      IRQ/5

     2       Closed      Open      Open       Open

     3        Open      Closed     Open       Open

     4        Open       Open     Closed      Open

     5        Open       Open      Open      Closed

                          SUPPORTED COMMAND SET

                            Basic AT Commands

  AT, +++, comma, A/

  A, C, D, E, F, H, L, N, O, P, Q, R, S, T, U, V, W, Y, Z

  &A, &B, &C, &G, &J, &K, &L, &P, &S, &T, &V, &W, &X, &Y, &Z

                          Extended AT Commands

  \C, \E, \O, \Q, \T, \U, \V, \X, \Y, \Z

  %A, %TT

                               S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S26,

  S38, S46, S48, S82, S86, S90, S91, S92, S95, S99, S108, S109, S110

                            Special Commands

  "H, "N, "O,-J, )M, +MS?

  Note: See MHI Help File for full command documentation.

                         Proprietary AT Command Set

                        AUTO-FALLBACK/FALL-FORWARD

  Type:          Configuration

  Format:        AT [cmds] %Gn [cmds]

  Description:   Selects auto-fallback/fall-forward

    Command                              Function

      %G0        Auto-fallback/fall-forward disabled

      %G1        Auto-fallback/fall-forward enabled

                               AUTO-RETRAIN

  Type:          Configuration

  Format:        AT [cmds] %En [cmds]

  Description:   Controls auto-retrain mode

    Command                              Function

      %E0        Auto-retrain disabled

      %E1        Auto-retrain enabled

                          BIT-MAPPED REGISTER S13

  Format:            AT [cmds] S13=n [cmds]

  Default:           0

  Range:             0-8

  Description:       Controls DTR dialing during asynchronous mode

     Bit      Value                         Function

    2 - 0        000    Not used

      3             0   DTR auto-dialing In asynchronous mode disabled

                   1    DTR auto-dialing In asynchronous mode enabled

                          BIT-MAPPED REGISTER S14

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

  Default:            Unidentified

  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  Answer mode enabled

                  1   Originate mode enabled

                          BIT-MAPPED REGISTER S21

  Format                 AT [cmds] S21=n [cmds]

  Default:               4

  Range:                 0-253

  Unit:                  Bit-mapped

  Description:           Selects jack type, CTS/DCD/DSR signals, low DTR
                         action, and the long space disconnect function.

    Bit       Value                          Function

     0               0   Selects RJ-11, RJ-41S, or RJ45S jack

                    1    Selects RJ-12 or RJ-13 jack

     1              0    Not used

     2               0   CTS forced high

                    1    CTS follows RTS

   4, 3             00   Modem does not respond to DTR

                    01   Modem hangs-up if off-hook & auto-answer is
                         disabled
                    10
                         Modem hangs up if off-hook & auto-answer not
                   11    disabled

                         Modem switches to asynchronous command state

     5               0   DCD forced high

                    1    DCD normal

     6               0   DSR forced high

                    1    DSR normal

     7               0   Long space disconnect function disabled

                    1    Long space disconnect function enabled

                          BIT-MAPPED REGISTER S22

  Format            AT [cmds] S22=n [cmds]

  Default:          118

  Range:            0-127

  Unit:             Bit-mapped

  Description:      Controls speaker volume and controls, and limits
                    results codes.

   Bit     Value                          Function

  1, 0         00   Low level 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 enabled
             111
                    All result codes enabled

                          BIT-MAPPED REGISTER S23

  Format                AT [cmds] S23=n [cmds]

  Default:              55

  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 19200bps

                 111    Sets serial port speed to 38400bps or higher

   5, 4            00   Parity even

                   01   Not Used

                   10   Parity odd

                  11    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]

  Default:             73

  Range:               0-11

  Unit:                Bit-mapped

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

   Bit       Value                          Function

  3, 1,          000   Asynchronous Direct mode
    0
                 001   Asynchronous off-line command mode and synchronous
                       connect mode
                 010
                       Asynchronous off-line command mode - modem
                 011   auto-dials first number in directory, then
                       synchronous connect mode.
                 100
                       Asynchronous off-line command mode on low DTR,
                 101   synchronous connect mode on high DTR.

                110    Not Used

                       Asynchronous Reliable Mode

                       Asynchronous Normal Mode

    2              0   Switched line (PSTN/Dial-up)

                  1    Leased line

  5, 4            00   Modem generates clock

                  01   DTE generates clock

                 10    Modem generates clock from the receive carrier
                       signal

    6              0   ITU/T mode

                  1    Bell mode

                          BIT-MAPPED REGISTER S28

  Format               AT [cmds] S28=n [cmds]

  Default:             Unidentified

  Range:               0-31

  Unit:                Bit-mapped

  Description:         Controls V.23 split speed, transmit/receive speed,
                       half duplex; and pulse dialing.

   Bit       Value                          Function

    0              0   V.23 split speed operation disabled

                  1    V.23 split speed operation enabled

    1              0   75bps transmit, 1200bps receive enabled

                  1    1200bps transmit, 75bps receive enabled

    2              0   1200bps transmit, 1200bps receive disabled

                  1    1200bps transmit, 1200bps receive enabled

   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]

  Default:           2

  Range:             0-10

  Description:       Select automode and extended result code format.

     Bit       Value                        Function

      0            0    Not used

      1             0   Auto-mode disabled

                   1    Auto-mode 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

                          BIT-MAPPED REGISTER S40

  Format                 AT [cmds] S40=n [cmds]

  Default:               Unidentified

  Range:                 0-239

  Unit:                  Bit-mapped

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

    Bit       Value                          Function

     0               0   V.42 LAPM to MNP 10 connection disabled

                    1    V.42 LAPM to MNP 10 connection enabled

     1               0   Power level adjustment disabled

                    1    Power level adjustment enabled

     2               0   Link will be negotiated at highest possible
                         speed
                    1
                         Link will be negotiated at 1200bps

  5, 4, 3          000   \K0

                   001   \K1

                   010   \K2

                   011   \K3

                   100   \K4

                  101    \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]

  Default:         Unidentified

  Range:           0-31

  Unit:            Bit-mapped

  Description:     Selects compression, auto-retrain, flow control, 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 disabled

              1    Auto-retrain enabled

    3          0   Flow control disabled

              1    Flow control enabled

    4          0   Stream mode for MNP

              1    Block mode for MNP

                         BIT-MAPPED REGISTER S192

  Format:                    AT [cmds] S192=n [cmds]

  Default:                   2

  Range:                     0-243

  Description:               Controls silent Answer Snoop Mode, adaptive
                             answer mode, V.34 rate limiting, rate
                             renegotiating display, demo mode, and silent
                             answer reason code

       Bit           Value                      Function

        0                   0  Standard - Full CNG. A "Snoop" occurs for
                               3 seconds after each ring, and for 12
                           1   seconds after the last ring.

                               Fast - CNG Tone Only. A "Snoop" occurs for
                               3 seconds after each ring, and for 5
                               seconds after the last ring.

         1                  0   Attempt data carrier first (FAX fallback
                                if failed data).

                                In this mode, adaptive answer accept data
                                carriers primarily and switches to FAX
                                mode if DATA was not successful. No CNG
                           1    tone required, any and all failed DATA
                                connections are handled as valid FAX call
                                attempts.

                                Attempt data carrier first (FAX if CNG
                                tone).

                                In this mode, adaptive answer accept data
                                carriers primarily wait until data
                                carrier answer tone for 4 seconds to
                                allow a possible CNG tone detect to
                                occur; but switches to FAX mode when a
                                CNG tone is detected.

       3, 2               00    Not used

         4                  0   V34 rate limiting disabled

                           1    V34 rate limiting enabled; The modem will
                                connect using the rate from +MS, after a
                                connection is made all data rates more
                                than one step below the connection rate
                                will be disabled.

         5                  0   Rate Renegotiating Display disabled

                           1    Rate Renegotiating Display enabled

         6                  0   Demo Mode disabled

                           1    Demo Mode enabled; modem displays V34 288
                                LP DC as if it is connected. Issue ATZ to
                                return normal operation.

         7                  0   Silent answer reason code disabled

                           1    Silent answer reason code enabled; "CNG
                                -- SA": Silent Answer or Silent Answer
                                Plus code detects CNG. "CNG -- Adaptive
                                Answer": Adaptive Answer code detects
                                CNG. "DATA Time-out": Data mode timed out
                                during an Adaptive Answer.

                         BIT-MAPPED REGISTER S201

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

  Default:             Unidentified

  Range:               0-63

  Description:         Controls power level, and compromise equalizer.

     Bit         Value                        Function

    4 - 0           00000  Initial power level -26dBm

                    00001  Initial power level -30dBm

                    00010  Initial power level -10dBm

                      ...  ...

                    01010  Initial power level -10dBm

                    01011  Initial power level -11dBm

                 ...to...  ...to...

                   11111   Initial power level -31dBm

       5                0   Equalizer disabled

                       1    Equalizer enabled

                         BIT-MAPPED REGISTER S210

  Format:           AT [cmds] S210=n [cmds]

  Default:          Unidentified

  Range:            0-13

  Description:      Controls Baud rate and V.34 asymmetric carrier rate.

     Bit      Value                         Function

    2 - 0         000  Baud rate Data rates

                  001  2400 2400 - 21800bps

                  010  2400 4800 - 24000bps

                  011  2400,2800 4800 - 24000bps

                  100  2400,2800,3000 4800 - 26400bps

                 101   2400,2800,3000,3200 4800 - 28800bps

                       2400,2800,3000,3200,3429 4800 - 28800bps

      3             0   V.34 transmit and receive carriers use the same
                        rate
                   1
                        V.34 transmit and receive Carriers may use
                        different rates

                            BLACKLISTED NUMBERS

  Type:                  Immediate

  Format:                AT [cmds] *B [cmds]

  Description:           Displays a numbered chart of BLACKLISTED
                         numbers, except permanently forbidden numbers
                         based on country setting. "OK" is returned if no
                         numbers are blacklisted.

                                BREAK SEND

  Type:          Configuration

  Format:        AT [cmds] \Bn [cmds]

  Default:       Unidentified

  Range:         1-9

  Unit:          .1 second

  Description:   Sends break to modem in non-error correction state

                                BREAK TYPE

  Type:                    Configuration

  Format:                  AT [cmds] \Kn [cmds]

  Description:             Configures action of break signal

     Command       Break from DTE     Modem receives      Break received
                                            \B          from remote modem

       \K0        Online command     Break sent to      Buffers cleared,
                  mode enabled,      remote modem and   break sent to DTE
                  send no break      buffers cleared
                  to remote modem

       \K1        Break sent to      Break sent to      Buffers cleared,
                  remote modem       remote modem and   break sent to DTE
                  and buffers        buffers cleared
                  cleared

       \K2        Online command     Send break to      Break sent
                  mode enabled,      remote modem       immediately to
                  send no break      immediately        DTE
                  to remote modem

       \K3        Send break to      Send break to      Break sent
                  remote modem       remote modem       immediately to
                  immediately        immediately        DTE

       \K4        Online command     Send break with    Break sent with
                  mode enabled,      transmitted data   received data to
                  send no break                         the DTE
                  to remote modem

       \K5        Send break with    Send break with    Break sent with
                  transmitted        transmitted data   received data to
                  data                                  the DTE

                                 CALLER ID

  Type:          Configuration

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

  Description:   Controls the Caller ID function

    Command                              Function

     #CID?       Displays current Caller ID mode

     #CID=?      Returns Caller ID modes supported

     #CID=0      Caller ID disabled

     #CID=1      Caller ID displays formatted data

     #CID=2      Caller ID displays raw hexadecimal data

                            COMMUNICATIONS MODE

  Type:                  Configuration

  Format:                AT [cmds] &Mn [cmds]

  Description:           Selects communications mode

  Note: Same function as &Q(0-3) settings.

        Command                                Mode

          &M0            Asynchronous Direct mode

          &M1            Asynchronous off-line command mode and
                         synchronous connect mode.

          &M2            Asynchronous off-line command mode - modem
                         auto-dials first number in directory, then
                         synchronous connect mode.

          &M3            Asynchronous off-line command mode on low DTR,
                         synchronous connect mode on high DTR.

                            COMMUNICATIONS MODE

  Type:                  Configuration

  Format:                AT [cmds] &Qn [cmds]

  Description:           Selects communications mode options

        Command                                Mode

          &Q0            Asynchronous Direct mode

          &Q1            Asynchronous off-line command mode and
                         synchronous connect mode.

          &Q2            Asynchronous off-line command mode - modem
                         auto-dials first number in directory, then
                         synchronous connect mode.

          &Q3            Asynchronous off-line command mode on low DTR,
                         synchronous connect mode on high DTR.

          &Q4            Not Used

          &Q5            Asynchronous Reliable Mode

          &Q6            Asynchronous Normal Mode

            Note: Be VERY careful when issuing these commands! Once you
            enter &Q(1-3) and save it to memory,

            there are only two known ways to return to Asynchronous Mode:

            1. Issue AT &Q(0,5-9) &W from a Synchronous Terminal to
            restore the modem to Asynchronous Mode.

            2. Connect modem to an Asynchronous Terminal with the DTR
            signal (line 20) disabled (a "break-out" box works very
            nicely for this) and issue the configuration you want or AT
            &Q(0,5-9) &W to return the modem to 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                              Function

           B0            V.21 (1200bps) and V.22 (1200 bps)

           B1            Bell 103 (300 bps) and Bell 212A (1200 bps)

                                COMPRESSION

  Type:          Configuration

  Format:        AT [cmds] %Cn [cmds]

  Description:   Selects data compression

    Command                              Function

      %C0        Data compression disabled

      %C1        MNP5 enabled

      %C2        V.42bis enabled

      %C3        MNP5 and V.42bis 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 enabled

      \N4        V.42 reliable mode enabled

      \N5        MNP reliable mode enabled

                               COUNTRY CODE

  Type:             Configuration

  Format:           AT [cmds] *NCn [cmds]

  Description:      Sets the country code

      Command             Function          Command         Function

       *NC?         Displays country        *NC013     Spain
                    codes and
                    configurations
                    currently supported

      *NC000        United States           *NC014     Sweden

      *NC001        Austria                 *NC015     Switzerland

      *NC002        Belgium                 *NC016     United Kingdom

      *NC003        Denmark                 *NC017     Greece

      *NC004        Finland                 *NC020     Canada

      *NC005        France                  *NC021     Mexico

      *NC006        Germany                 *NC022     United States

      *NC007        Ireland                 *NC040     Australia

      *NC008        Italy                   *NC043     Japan

      *NC010        Netherlands             *NC047     Singapore

      *NC011        Norway                  *NC048     New Zealand

      *NC012        Portugal                *NC060     South Africa

                         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 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 hangs-up if off-hook & auto-answer is disabled

    Command 2     Modem hangs up if off-hook & auto-answer not disabled

    Command 3     Modem switches to asynchronous command state

    Command 4     Modem performs soft reset

                              DELAYED NUMBERS

  Type:                   Immediate

  Format:                 AT [cmds] *D [cmds]

  Description:            Displays a numbered chart of DELAYED numbers
                          and the length of delay in the format HH:MM:SS.
                          "OK" is returned if no numbers are delayed.

                                   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

       - ( ) i        These symbols and spaces are ignored

          L           Dial the last dialing string

          J           Perform MNP10 link negotiation at 1200bps
                      (one-shot)

          K           Enable power level adjustment during MNP10 link
                      negotiation (one-shot)

          P           Pulse dial the following digits

          R           Accepted, but no action occurs

         Sn           Use dialing string stored in register n. n=0-3

          T           Tone dial the following digits

          W           Wait for second dialtone, Within the time set in S6
                      and/or S7

          *           DTMF code for "star"

          #           DTMF code for "gate"

          &           Wait for "bong" Credit Card billing tone

          @           Wait for quiet answer, A 5 second silence.

          ,           Pause before finishing dialing string, time set in
                      S8

          !           Hook flash, go on-hook for 700ms, maybe changed by
                      S29.

          ^           Turn on 1300Hz call originating pulse

          ;           Return to command state

                               DIALING CODES

  Type:               Configuration

  Format:             AT [cmds] *Zn [cmds]

  Description:        Sets pulse dialing. Used for countries that
                      supports 2 pulse dialing methods.

       Command                             Function

         *Z0          Dial code 0

         *Z1          Dial code 1

                              DISTICTIVE RING

  Type:              Configuration

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

  Default:           0

  Range:             0-7

  Description:       Selects distinctive ring and result code

  Note: -SDR? = Reports current distinctive ring used

     Bit      Value                         Function

      0             0   Single rings and report as RING 1 disabled

                   1    Single rings and report as RING 1 enabled

      1             0   Double rings and report as RING 2 disabled

                   1    Double rings and report as RING 2 enabled

      2             0   Triple rings and report as RING 3 disabled

                   1    Triple rings and report as RING 3 enabled

                         DISPLAYS CURRENT SETTINGS

  Type:          Immediate

  Format:        AT [cmds] \S [cmds]

  Description:   Displays Active Configuration

                           DISPLAYS MANUFACTURER

  Type:          Immediate

  Format:        AT [cmds] +GMI [cmds]

  Description:   Displays manufacturer ID

                              DISPLAYS MODEL

  Type:          Immediate

  Format:        AT [cmds] +GMM [cmds]

  Description:   Displays model ID

                             DISPLAYS ROM CODE

  Type:          Immediate

  Format:        AT [cmds] +GMR [cmds]

  Description:   Displays ROM Code ID

                     EQM AUTOMATIC RATE ADAPTION BIAS

  Type:                 Register

  Format                AT [cmds] S191=n [cmds]

  Default:              129

  Range:                0-255

  Unit:                 Unidentified

  Description:          Controls the bias for V.32/32bis,V.FC, and V.34
                        operation. Linked to AT%Q, but doesnt affect it.

                             EQM QUALITY TIMER

  Type:                  Register

  Format                 AT [cmds] S190=n [cmds]

  Default:               60

  Range:                 10-255

  Unit:                  1 second

  Description:           Sets the minimum time period the EQM (%Q) level
                         must be "GOOD" before attempting to fall-forward
                         to a higher rate. Affects AT%E2%G1 setting

                          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         No flow control, No error correction, No data
                    compression

        &F1         MAC hardware flow control, correction & compression
                    active

        &F2         Hardware flow control, correction & compression
                    active

                         FLASH DIAL MODIFIER TIME

  Type:                   Register

  Format                  AT [cmds] S29=n [cmds]

  Default:                7

  Range:                  0-255

  Unit:                   .1 second

  Description:            Time the modem will go on-hook upon receiving
                          the ! dial modifier in dial string. S29=0 will
                          disable flash hook function.

                                 FLASH ROM

  Type:          Immediate

  Format:        AT [cmds] ** [cmds]

  Description:   Set FLASH ROM code XMODEM upload mode

                               FLOW CONTROL

  Type:           Configuration

  Format:         AT [cmds] \Gn [cmds]

  Description:    Selects modem port flow control for Normal and Direct
                  modes

    Command                              Function

      \G0         Flow control disabled

      \G1         Flow control enabled

                               FLOW CONTROL

  Type:          Read-only 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 XON/XOFF and RTS/CTS enabled

                       FLOW CONTROL CHARACTER - XON

  Type:          Register

  Format:        AT [cmds] S32=n [cmds]

  Default:       17

  Range:         0-255

  Unit:          ASCII

  Description:   Sets the character used to represent XON

                       FLOW CONTROL CHARACTER - XOFF

  Type:          Register

  Format:        AT [cmds] S33=n [cmds]

  Default:       19

  Range:         0-255

  Unit:          ASCII

  Description:   Sets the character used to represent XOFF

                             INACTIVITY TIMER

  Type:                   Register

  Format                  AT [cmds] S30=n [cmds]

  Default:                0

  Range:                  0-255

  Unit:                   10 seconds

  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. In Reliable mode any data transfer resets timer.
            In Normal mode only sent data resets timer.

                             LINE SIGNAL LEVEL

  Type:           Immediate

  Format          AT [cmds] %L [cmds]

  Default:        Unidentified

  Range:          9-46

  Unit:           -dBm

  Description:    Returns a value which indicates the received line
                  signal level

                            LINE SIGNAL QUALITY

  Type:          Immediate

  Format         AT [cmds] %Q [cmds]

  Default:       Unidentified

  Range:         0-127

  Unit:          Unidentified

  Description:   Returns a value which indicates line signal quality
                 (EQM)

                             LOCK SERIAL PORT

  Type:          Configuration

  Format:        AT [cmds] \Jn [cmds]

  Description:   Sets operation of serial port speed

    Command                              Function

      \J0        Serial speed locked

      \J1        Serial speed follows connect speed

                    MAXIMUM BLOCK SIZE FOR TRANSMISSION

  Type:          Configuration

  Format:        AT [cmds] \An [cmds]

  Description:   Sets the maximum transmittable block size

    Command                              Function

      \A0        MNP block size is 64 characters

      \A1        MNP block size is 128 characters

      \A2        MNP block size is 192 characters

      \A3        MNP block size is 256 characters

                                 MNP MODE

  Type:          Configuration

  Format:        AT [cmds] -Cn [cmds]

  Description:   Controls which MNP mode is selected

    Command                              Function

      -C0         Enable MNP 10 sync mode

      -C1         Enable MNP 10 async mode

      -C2         Enable MNP 2

      -C3         Enable MNP 3

                          MNP - EXTENDED SERVICES

  Type:          Configuration

  Format:        AT [cmds] -Kn [cmds]

  Description:   Selects MNP extended services (MNP10)

    Command                              Function

      -K0        V.42 LAPM to MNP 10 connection disabled

      -K1        V.42 LAPM to MNP 10 connection enabled

      -K2        MNP 10 extended services detection enabled

                          MNP - STREAM/BLOCK MODE

  Type:          Configuration

  Format:        AT [cmds] \Ln [cmds]

  Description:   Selects the transfer mode for MNP link

    Command                              Function

      \L0        Stream mode for MNP enabled

      \L1        Block mode for MNP enabled

                             MNP10 - FALLBACK

  Type:          Configuration

  Format:        AT [cmds] -Qn [cmds]

  Description:   Allows MNP10 to fall back to speeds slower than 4800bps

    Command                              Function

      -Q0        MNP10 at 4800bps only enabled

      -Q1        MNP10 at 2400 and 1200bps enabled

                           MNP10 - FALL-FORWARD

  Type:            Configuration

  Format:          AT [cmds] -Un [cmds]

  Description:     Controls forced transmit level change during MNP10
                   fall-forward

     Command                             Function

       -U0         Automatic attenuation to -10dBm

       -U1         Automatic attenuation to as low as -18dBm

       -U2         Automatic attenuation to as low as -22dBm

       -U3         Automatic attenuation to as low as -25dBm

       -U4         Forced 2400bps transmit level to -10dBm

       -U5         Forced 2400bps transmit level to -18dBm

       -U6         Forced 2400bps transmit level to -22dBm

       -U7         Forced 2400bps transmit level to -25dBm

                         MNP10 - LINK NEGOTIATION

  Type:          Configuration

  Format:        AT [cmds] *Hn [cmds]

  Description:   Sets the speed at which MNP10 link negotiation will
                 occur

    Command                              Function

      *H0        Link will be negotiated at highest possible speed

      *H1        Link will be negotiated at 1200bps

      *H2        Link will be negotiated at 4800bps

                        MNP10 - POWER LEVEL ADJUST

  Type:                Configuration

  Format:              AT [cmds] )Mn [cmds]

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

       Command                              Function

         )M0           Power level adjustment disabled

         )M1           Power level adjustment enabled

                           MODULATION SELECTION

  Type:                Configuration

  Format:              AT [cmds] +MS=x,y,z,a [cmds]

  Default:             AT+MS=11,1,300,28800<cr>

  Description:         Sets options for active protocol; the transfer
                       rates specified by z (minimum) and a (maximum)
                       must be valid for the protocol selected.

       Command                              Function

        +MS=?          Displays supported +MS options and range

         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=64           Bell 103

        x=69           Bell 212A

        x=74           V.FC

         y=0           Automode disabled

         y=1           Auto-detect highest speed enabled

      z, a=300         Set minimum or maximum transfer rate at 300bps,
                       respectively.

      z, a=1200        Set minimum or maximum transfer rate at 1200bps,
                       respectively.

      z, a=2400        Set minimum or maximum transfer rate at 2400bps,
                       respectively.

      z, a=4800        Set minimum or maximum transfer rate at 4800bps,
                       respectively.

      z, a=7200        Set minimum or maximum transfer rate at 7200bps,
                       respectively.

      z, a=9600        Set minimum or maximum transfer rate at 9600bps,
                       respectively.

     z, a=12000        Set minimum or maximum transfer rate at 12000bps,
                       respectively.

     z, a=14400        Set minimum or maximum transfer rate at 14400bps,
                       respectively.

     z, a=16800        Set minimum or maximum transfer rate at 16800bps,
                       respectively.

     z, a=19200        Set minimum or maximum transfer rate at 19200bps,
                       respectively.

     z, a=21600        Set minimum or maximum transfer rate at 21600bps,
                       respectively.

     z, a=24000        Set minimum or maximum transfer rate at 24000bps,
                       respectively.

     z, a=26400        Set minimum or maximum transfer rate at 26400bps,
                       respectively.

     z, a=28800        Set minimum or maximum transfer rate at 28800bps,
                       respectively.

                               PHASE 1 BUSY

  Type:                  Register

  Format:                AT [cmds] SCn=x [cmds]

  Description:           Sets the way the modem accepts a busy signal by
                         FCC specifications

      Command        Value                     Function

       SC0=x          42      Minimum BUSY ON Time

       SC1=x            0     Minimum BUSY ON Time

       SC2=x           58     Maximum BUSY ON Time

       SC3=x            0     Maximum BUSY ON Time

       SC4=x           42     Minimum BUSY OFF Time

       SC5=x            0     Minimum BUSY OFF Time

       SC6=x           58     Maximum BUSY OFF Time

       SC7=x            0     Maximum BUSY OFF Time

       SC8=x            4     Number of Cycles

                             PHASE 1 RINGBACK

  Type:                   Register

  Format:                 AT [cmds] SCn=x [cmds]

  Description:            Sets the way the modem accepts a ringback
                          signal by FCC specifications

      Command         Value                     Function

       SC9=x           90      Minimum ON Time

       SC10=x           0      Minimum ON Time

       SC11=x          300     Maximum ON Time

       SC12=x           0      Maximum ON Time

       SC13=x          290     Minimum OFF Time

       SC14=x           0      Minimum OFF Time

       SC15=x          460     Maximum OFF Time

       SC16=x           0      Maximum OFF Time

       SC17=x           1      Number of Cycles

                            PHASE 1 CONGESTION

  Type:                    Register

  Format:                  AT [cmds] SCn=x [cmds]

  Description:             Sets the way the modem accepts a congestion
                           signal by FCC specifications

      Command         Value                     Function

       SC18=x           22     Minimum ON Time

       SC19=x            0      Minimum ON Time

       SC20=x           28      Maximum ON Time

       SC21=x            0      Maximum ON Time

       SC22=x           22      Minimum OFF Time

       SC23=x            0      Minimum OFF Time

       SC24=x           28      Maximum OFF Time

       SC25=x            0      Maximum OFF Time

       SC26=x            4      Number of Cycles

                            PHASE 1 DIALTONE 1

  Type:                    Register

  Format:                  AT [cmds] SCn=x [cmds]

  Description:             Sets the way the modem accepts a dialtone 1
                           signal by FCC specifications

      Command         Value                     Function

       SC27=x           0      Minimum ON Time

       SC28=x            0      Minimum ON Time

       SC29=x            0      Maximum ON Time

       SC30=x            0      Maximum ON Time

       SC31=x            0      Minimum OFF Time

       SC32=x            0      Minimum OFF Time

       SC33=x            0      Maximum OFF Time

       SC34=x            0      Maximum OFF Time

       SC35=x            1      Number of Cycles

                            PHASE 1 DIALTONE 2

  Type:                    Register

  Format:                  AT [cmds] SCn=x [cmds]

  Description:             Sets the way the modem accepts a dialtone 2
                           signal by FCC specifications

      Command         Value                     Function

       SC36=x           0      Minimum ON Time

       SC37=x            0      Minimum ON Time

       SC38=x            0      Maximum ON Time

       SC39=x            0      Maximum ON Time

       SC40=x            0      Minimum OFF Time

       SC41=x            0      Minimum OFF Time

       SC42=x            0      Maximum OFF Time

       SC43=x            0      Maximum OFF Time

       SC44=x            1      Number of Cycles

                               PHASE 2 BUSY

  Type:                  Register

  Format:                AT [cmds] SCn=x [cmds]

  Description:           Sets the way the modem accepts a busy signal by
                         FCC specifications

      Command        Value                     Function

      SC45=x           0      Minimum ON Time

       SC46=x           0     Minimum ON Time

       SC47=x           0     Maximum ON Time

       SC48=x           0     Maximum ON Time

       SC49=x           0     Minimum OFF Time

       SC50=x           0     Minimum OFF Time

       SC51=x           0     Maximum OFF Time

       SC52=x           0     Maximum OFF Time

       SC53=x           1     Number of Cycles

                             PHASE 2 RINGBACK

  Type:                   Register

  Format:                 AT [cmds] SCn=x [cmds]

  Description:            Sets the way the modem accepts a ringback
                          signal by FCC specifications

      Command         Value                     Function

       SC54=x           0      Minimum ON Time

       SC55=x           0      Minimum ON Time

       SC56=x           0      Maximum ON Time

       SC57=x           0      Maximum ON Time

       SC58=x           0      Minimum OFF Time

       SC59=x           0      Minimum OFF Time

       SC60=x           0      Maximum OFF Time

       SC61=x           0      Maximum OFF Time

       SC62=x           1      Number of Cycles

                            PHASE 2 CONGESTION

  Type:                    Register

  Format:                  AT [cmds] SCn=x [cmds]

  Description:             Sets the way the modem accepts a congestion
                           signal by FCC specifications

      Command         Value                     Function

       SC61=x           0      Minimum ON Time

       SC62=x            0      Minimum ON Time

       SC63=x            0      Maximum ON Time

       SC64=x            0      Maximum ON Time

       SC65=x            0      Minimum OFF Time

       SC66=x            0      Minimum OFF Time

       SC67=x            0      Maximum OFF Time

       SC68=x            0      Maximum OFF Time

       SC69=x            1      Number of Cycles

                             PHASE 2 DIALTONE1

  Type:                    Register

  Format:                  AT [cmds] SCn=x [cmds]

  Description:             Sets the way the modem accepts a dialtone 1
                           signal by FCC specifications

      Command         Value                     Function

       SC72=x           0      Minimum ON Time

       SC73=x            0      Minimum ON Time

       SC74=x            0      Maximum ON Time

       SC75=x            0      Maximum ON Time

       SC76=x            0      Minimum OFF Time

       SC77=x            0      Minimum OFF Time

       SC78=x            0      Maximum OFF Time

       SC79=x            0      Maximum OFF Time

       SC80=x            1      Number of Cycles

                             PHASE 2 DIALTONE2

  Type:                    Register

  Format:                  AT [cmds] SCn=x [cmds]

  Description:             Sets the way the modem accepts a dialtone 2
                           signal by FCC specifications

      Command         Value                     Function

       SC81=x           0      Minimum ON Time

       SC82=x            0      Minimum ON Time

       SC83=x            0      Maximum ON Time

       SC84=x            0      Maximum ON Time

       SC85=x            0      Minimum OFF Time

       SC86=x            0      Minimum OFF Time

       SC87=x            0      Maximum OFF Time

       SC88=x            0      Maximum OFF Time

       SC89=x            1      Number of Cycles

                                    PNP

  Type:          Register

  Format:        AT [cmds] S193=n [cmds]

  Description:   Controls plug and play feature

    Command                              Function

     S193=0       Serial PNP disabled, when &F1 set

     S193=1       Serial PNP enabled, when &F0 or &F2 set

                            REPORT INFORMATION

  Type:           Immediate

  Format:         AT [cmds] In [cmds]

  Description:    Displays requested information

     Command                             Function

       I0          SupraFAXModem product ID code

       I1          ROM checksum

       I2          Test Checksum (OK if correct, ERROR if not)

       I3          ROM revision code, Model name, and Firmware build date

       I4          Encrypted report of supported protocols

       I5          Supra Copyright and Model information

       I6          Country Code for country PSTN Signals are Configured
                   for

       I7          DSP Model and Version Code

       I9          PnP COMID string

       I10         Supported Feature Code List, Model Name, and Code
                   Definitions

       I92         Product Code ID Number

                      REPORT INFORMATION - CONNECTION

  Type:                  Immediate

  Format:                AT [cmds] %Q1 [cmds]

  Description:           Displays information on the connection

       Connection                            Display

      V.32/V.32bis        EQM: (same as %Q)

                          Receive Level: (same as %L)

                          Transmit Level: (current TX level in dBm)

       V.FC/V.34          Far Echo Delay: (round trip far end echo delay
                          in ms)

                          Far Echo Level: (signal Strength of far echo in
                          dBm)

                          Pre-Emphasis Filter: (filter in use to
                          normalize the lines frequency response as per
                          V34 DSP specs. and ITU V.34 specs.)

       V.34 only          SNR: (signal to Noise ratio measured during the
                          line probe, in dB)

                          Normalized Bandwidth: (The -3dB roll off points
                          after the pre-emphasis filter is applied. This
                          is not the same as the usable audio band-width
                          since the signal has been heavily processed
                          prior to this measurement. This range
                          determines the maximum symbol rate the line
                          will support.)

                          Baud rate: (symbols per second on the
                          connection)

                          Transmit Carrier: If the symbol rate is below
                          3429 there are two available carrier
                          frequencies. (A high carrier and a low
                          carrier.) The actual frequency of the carriers
                          varies with the symbol rate. "high" or "low"
                          are the only items displayed.

                          Received Carrier: same as above on received
                          carrier

                                  RTS/CTS

  Type:          Configuration

  Format:        AT [cmds] &Rn [cmds]

  Description:   Selects RTS/CTS options

    Command                              Function

      &R0        In Sync mode CTS follows RTS

                 In Async mode CTS forced high

      &R1        In Sync mode CTS forced high

                 In Async mode RTS/CTS forced high

                               SC-REGISTERS

  Type:                  Register

  Format:                AT [cmds] SCn=x [cmds]

  Description:           Each register "pair" holds the value for each
                         setting. To set a value, divide the setting by
                         256. The integer goes in the second register,
                         while the remained goes in the first. (A setting
                         of 516 would convert to 2 Remainder 4, and could
                         be set by sending ATSC0=4SC1=2 to the modem.)
                         Settings are in 1/100ths of a second. Setting
                         SC0=22 & SC4=22 allows FAST BUSY to also be
                         detected as BUSY.

                     SELECT CALL PROGRESS RESULT CODES

  Type:               Configuration

  Format:             AT [cmds] Xn [cmds]

  Description:        Enables selection of tone detection and associated
                      result code format options

      Command                              Function

         X0           Basic result codes only enabled

         X1           Basic and connection speed result codes enabled

         X2           Basic and connection speed result codes and
                      dialtone detection enabled

         X3           All result codes except dialtone detection enabled

         X4           All result codes enabled

                                SLEEP TIMER

  Type:                   Register

  Format                  AT [cmds] S24=n [cmds]

  Default:                0

  Range:                  0-255

  Unit:                   1 second

  Description:            Maximum duration of DTE and DCE inactivity
                          allowed prior to initiating low-power sleep
                          mode.

                              STATUS-REGISTER

  Type:          Configuration

  Format:        AT [cmds] (see below) [cmds]

  Description:   Gives options to read or write to a specified register

    Command                              Function

       =n         Write value n to the last S register viewed

       ?          Displays current setting for the last S register
                  accessed

      Sr?         Reports value in S register r

     Sr.b?        Reports value in S register r (not just bit b)

      SCr?        Reports value is SC register r

      Sr=n        Write value n into S register r

     Sr.b=n       Write value (0 or 1) to bit b of S register r

     SCr=n        Write value n into SC register r

                                TEST MODES

  Type:              Register

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

  Default:           0

  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            0   Local analog loopback w/ self-test not in progress

                1    Local analog loopback w/ self-test in progress

                       TRANSMISSION LEVEL - CELLULAR

  Type:             Configuration

  Format:           AT [cmds] @Mn [cmds]

  Default:          0

  Range:            0-31

  Unit:             Unidentified

  Description:      Sets the signal level for transmission while in
                    cellular mode (MNP10)

                                 V.23 MODE

  Type:          Configuration

  Format:        AT [cmds] %Fn [cmds]

  Description:   Selects V.23 split-speed

    Command                              Function

      %F1         75bps transmit, 1200bps receive (split-speed)

      %F2         1200bps transmit, 75bps receive (split-speed)

                            V.23 - SPLIT-SPEED

  Type:          Configuration

  Format:        AT [cmds] \Wn [cmds]

  Description:   Controls V.23 split-speed mode

    Command                              Function

      \W0        V.23 split-speed mode disabled

      \W1        V.23 split-speed mode enabled

                        V.32 - COMPROMISE EQUALIZER

  Type:          Configuration

  Format:        AT [cmds] :En [cmds]

  Description:   Controls V.32 compromise equalizer

    Command                              Function

      :E0        Equalizer disabled

      :E1        Equalizer enabled

