
BEST DATA PRODUCTS, INC.

MACH 2 56K

Card Type                    Modem (asynchronous)
Chipset                      Unidentified
Maximum Data Rate            56Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation              Bell 103A, 212A

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

                             U.S. Robotics x2
Fax Modulation               ITU-T V.17, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    Class I & II
Data Bus                     16-bit ISA
Card Size                    Full height, half length

[Image]

                                CONNECTIONS

          Function             Label           Function             Label

  Telephone line out           CN1     Telephone line in            CN2

                      SUPPORTED STANDARD COMMANDS

                           Basic AT Commands

  +++, comma, A/

  A, B, E, F, H, L, M, O, P, T, V, X, Z

  &C, &D, &F, &G, &P, &R, &S, &T, &W, &Z

                              S-Registers

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

            Note: See MHI help file for complete information.

  UNIDENTIFIED COMMANDS

   Command      Default

     S31          128

                         Proprietary AT Command Set

                          BIT-MAPPED REGISTER S13

  Format           AT [cmds] S13=n [cmds]

  Default:         0

  Range:           0 - 159

  Description:     Controls DTR reset, DTR dialing, reset dialing, and
                   MNP3.

   Bit    Value                           Function

    0          0   DTR normal.

              1    Reset on low DTR.

    1          0   Non-error-correcting mode transmit buffer set to
                   1.5KB.
              1
                   Non-error-correcting mode transmit buffer set to 128
                   bytes.

    2          0   Backspace and delete keys normal.

              1    Backspace and delete keys reversed.

    3          0   DTR dialing disabled.

              1    DTR dialing enabled.

    4          0   Reset dialing disabled.

              1    Reset dialing enabled.

  6, 5       00    Not used.

    7          0   Modem enters command state when +++ is received.

              1    Modem disconnects and enters command state when +++ is
                   received.

                          BIT-MAPPED REGISTER S15

  Format:                 AT [cmds] S15=n [cmds]

  Default:                0

  Range:                  0 - 255

  Description:            Controls error correction and compression in
                          selected protocols, MNP modes, and V.42
                          operation.

      Bit          Value                      Function

       0                 0  Error correction/compression enabled in V.22
                            mode.
                        1
                            Error correction/compression disabled in V.22
                            mode.

        1                0   Error correction/compression enabled in
                             V.22bis mode.
                        1
                             Error correction/compression disabled in
                             V.22bis mode.

        2                0   Error correction/compression enabled in V.32
                             and V.32bis modes.
                        1
                             Error correction/compression disabled in
                             V.32 and V.32bis modes.

        3                0   MNP handshake enabled.

                        1    MNP handshake disabled.

        4                0   MNP4 disabled.

                        1    MNP4 enabled.

        5                0   MNP3 disabled.

                        1    MNP3 enabled.

        6                0   MNP operation normal

                        1    MNP configured for non-compatible modems.

        7                0   V.42 enabled.

                        1    V.42 disabled.

                          BIT-MAPPED REGISTER S27

  Format:                AT [cmds] S27=n [cmds]

  Default:               0

  Range:                 0 - 191

  Description:           Controls V.21/Bell 103A, V.32 encoding and
                         modulation, V.32bis modulation, V.42 answer tone
                         and selective reject, and 9600 result codes.

    Bit       Value                          Function

     0                0  Bell 103A enabled.

                     1   V.21 enabled.

     1                0  V.32 trellis coding enabled.

                     1   V.32 trellis coding disabled.

     2                0  V.32 modulation enabled.

                     1   V.32 modulation disabled.

     3                0  2100Hz answer tone enabled.

                     1   2100Hz answer tone disabled.

     4                0  Fallback to V.23 disabled.

                     1   Fallback to V.23 enabled.

     5                0  V.32bis modulation enabled.

                     1   V.32bis modulation disabled.

     6               0   Not used.

     7                0  Actual result codes displayed.

                     1   Force 9600 result codes.

                          BIT-MAPPED REGISTER S32

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

  Default:             0

  Range:               0 - 59

  Description:         Controls V.8 protocol and options, and V.34 and x2
                       modulation protocols.

     Bit        Value                        Function

      0               0  V.8 Call Indicate disabled.

                     1   V.8 Call Indicate enabled.

      1               0  V.8 disabled.

                     1   V.8 enabled.

      2              0    Not used.

      3               0   V.34 modulation enabled.

                     1    V.34 modulation disabled.

      4               0   V.34 modulation at 31.2Kbps and 33.6Kbps
                          enabled.
                     1
                          V.34 modulation at 31.2Kbps and 33.6Kbps
                          disabled.

      5               0   U.S. Robotics x2 modulation enabled.

                     1    U.S. Robotics x2 modulation disabled.

                               BREAK LENGTH

  Type:             Register

  Format:           AT [cmds] S21=n [cmds]

  Default:          10

  Range:            0 - 255

  Unit:             10 ms

  Description:      Sets the length of error correction mode breaks sent
                    from DCE to DTE.

                                BREAK TYPE

  Type:          Configuration

  Format:        AT [cmds] &Yn [cmds]

  Description:   Configures action of break signal.

    Command                              Function

      &Y0        Break empties buffer.

      &Y1        Break empties buffer and is sent immediately.

      &Y2        Break does not empty buffer and is sent immediately.

                             COMPRESSION MODE

  Type:          Configuration

  Format:        AT [cmds] &Kn [cmds]

  Description:   Selects the type of data compression that will be used.

    Command                              Function

      &K0        Data compression disabled.

      &K1        Auto-detect compression mode.

      &K2        Data compression enabled.

      &K3        MNP5 data compression only enabled.

                       CONNECTION SPEED LOWER LIMIT

  Type:            Configuration

  Format:          AT [cmds] &Un [cmds]

  Description:     Sets slowest allowed connection speed if &N is set to
                   1 or higher.

     Command                              Function

       &U0         No minimum connect speed.

       &U1         Set minimum connect speed to 300bps.

       &U2         Set minimum connect speed to 1200bps.

       &U3         Set minimum connect speed to 2400bps.

       &U4         Set minimum connect speed to 4800bps.

       &U5         Set minimum connect speed to 7200bps.

       &U6         Set minimum connect speed to 9600bps.

       &U7         Set minimum connect speed to 12Kbps.

       &U8         Set minimum connect speed to 14.4Kbps.

       &U9         Set minimum connect speed to 16.8Kbps.

       &U10        Set minimum connect speed to 19.2Kbps.

        CONNECTION SPEED LOWER LIMIT (CON'T)

  Command                   Function

   &U11     Set minimum connect speed to 21.6Kbps.

   &U12     Set minimum connect speed to 24Kbps.

   &U13     Set minimum connect speed to 26.4Kbps.

   &U14     Set minimum connect speed to 28.8Kbps.

                       CONNECTION SPEED UPPER LIMIT

  Type:                  Configuration

  Format:                AT [cmds] &Nn [cmds]

  Description:           Sets required connection speed if &U is set to
                         0; otherwise, sets fastest allowed connection
                         speed.

        Command                              Function

          &N0            No maximum connect speed.

          &N1            Set maximum connect speed to 300bps.

          &N2            Set maximum connect speed to 1200bps.

          &N3            Set maximum connect speed to 2400bps.

          &N4            Set maximum connect speed to 4800bps.

          &N5            Set maximum connect speed to 7200bps.

          &N6            Set maximum connect speed to 9600bps.

          &N7            Set maximum connect speed to 12Kbps.

          &N8            Set maximum connect speed to 14.4Kbps.

          &N9            Set maximum connect speed to 16.8Kbps.

          &N10           Set maximum connect speed to 19.2Kbps.

          &N11           Set maximum connect speed to 21.6Kbps.

          &N12           Set maximum connect speed to 24Kbps.

          &N13           Set maximum connect speed to 26.4Kbps.

          &N14           Set maximum connect speed to 28.8Kbps.

          &N15           Set maximum connect speed to 31.2Kbps.

          &N16           Set maximum connect speed to 33.6Kbps.

                                   DIAL

  Type:                  Immediate

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

  Description:           Dials the telephone number indicated according
                         to any modifiers included in the string.

        Command                              Function

           DL            Re-dial last number.

           DP            Pulse dialing enabled.

           DR            Answer mode enabled; originate mode disabled
                         following handshake initiation.

          DSn            Dial stored telephone number n.

           DT            Tone dialing enabled.

           DW            Dialing resumed following dial tone detection.

           D,            Dialing paused for amount of time specified in
                         S8 register.

           D/            Dialing paused for 1/8 second.

           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.

                      DISPLAY HELP SCREEN - AMPERSAND

  Type:          Configuration

  Format:        AT [cmds] &$ [cmds]

  Description:   Displays the help screen on the AT& commands.

                        DISPLAY HELP SCREEN - BASIC

  Type:          Configuration

  Format:        AT [cmds] $ [cmds]

  Description:   Displays the basic help screen.

                        DISPLAY HELP SCREEN - DIAL

  Type:          Configuration

  Format:        AT [cmds] D$ [cmds]

  Description:   Displays the help screen on the dialing commands.

                      DISPLAY HELP SCREEN - REGISTERS

  Type:          Configuration

  Format:        AT [cmds] S$ [cmds]

  Description:   Displays the help screen for S registers.

                            DISPLAY INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays modem properties.

    Command                              Function

       I0        Displays product identification code.

       I1        Tests and displays ROM checksum result.

       I2        Tests and displays RAM checksum result.

       I3        Displays product type.

       I4        Displays current command settings.

       I5        Displays current NVRAM settings.

       I6        Displays link diagnostics.

       I7        Displays product configuration.

      I10        Displays virtual device driver configuration.

      I11        Displays current connections statistics for V.34 mode.

                           ERROR CORRECTION MODE

  Type:          Configuration

  Format:        AT [cmds] &Mn [cmds]

  Description:   Selects active error correction protocols.

    Command                              Function

      &M0        Normal mode only.

      &M4        Auto-detect mode.

      &M5        Error correction mode only.

                           EXTENDED RESULT CODES

  Type:          Configuration

  Format:        AT [cmds] &An [cmds]

  Description:   Selects extended result codes.

    Command                              Function

      &A0        Extended result codes disabled.

      &A1        Error correction result codes enabled.

      &A2        V.32 result code enabled.

      &A3        Error correction and compression result codes enabled.

                       FLOW CONTROL CHARACTER - XOFF

  Type:          Register

  Format:        AT [cmds] S23=n [cmds]

  Default:       19

  Range:         0 - 127

  Unit:          1 ASCII character

  Description:   Sets the character used to represent XOFF.

                       FLOW CONTROL CHARACTER - XON

  Type:          Register

  Format:        AT [cmds] S22=n [cmds]

  Default:       17

  Range:         0 - 127

  Unit:          1 ASCII character

  Description:   Sets the character used to represent XON.

                       FLOW CONTROL - MODEM-TO-MODEM

  Type:          Configuration

  Format:        AT [cmds] &In [cmds]

  Description:   Selects the type of modem-to-modem flow control used.

    Command                              Function

      &I0        Software flow control disabled.

      &I1        XON/XOFF pass-through enabled.

      &I2        XON/XOFF pass-through disabled.

                             FLOW CONTROL TYPE

  Type:          Configuration

  Format:        AT [cmds] &Hn [cmds]

  Description:   Sets type of flow control used by modem.

    Command                              Function

      &H0        Flow control disabled.

      &H1        CTS/RTS flow control enabled.

      &H2        XON/XOFF flow control enabled.

      &H3        CTS/RTS and XON/XOFF flow control enabled.

                             INACTIVITY TIMER

  Type:                  Register

  Format                 AT [cmds] S19=n [cmds]

  Default:               0

  Range:                 0 - 255

  Unit:                  1 minute

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

                            PROFILE ON POWER-UP

  Type:            Configuration

  Format:          AT [cmds] Yn [cmds]

  Description:     Selects the profile that the modem will reset to on
                   power-up.

     Command                              Function

        Y0         Modem resets to user profile 0 on power-up.

        Y1         Modem resets to user profile 1 on power-up.

        Y2         Modem resets to factory generic profile on power-up.

        Y3         Modem resets to factory hardware flow control profile
                   on power-up.

        Y4         Modem resets to factory software flow control profile
                   on power-up.

                    REPEAT PREVIOUS COMMAND CONTINUALLY

  Type:           Immediate

  Format:         A>

  Description:    Repeats the previous command until interrupted by the
                  user.

  Note:           Do not precede this command with AT, or follow it with
                  <CR>.

                               RESULT CODES

  Type:          Configuration

  Format:        AT [cmds] Qn [cmds]

  Description:   Enables modem to send result codes to the DTE.

    Command                              Function

       Q0        Result codes enabled.

       Q1        Result codes disabled.

       Q2        Result codes enabled in originate mode only.

                               TEST PATTERN

  Type:          Register

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

  Description:   Transmits a test pattern to the remote modem.

    Command                              Function

     S16=0       Test pattern disabled.

     S16=4       Test pattern enabled.

                      V.21 ANSWER MODE FALLBACK TIMER

  Type:          Register

  Format:        AT [cmds] S29=n [cmds]

  Default:       20

  Range:         Unidentified

  Unit:          .1 second

  Description:   The function of this register is unidentified.

                            V.32 HANDSHAKE TIME

  Type:                  Register

  Format:                AT [cmds] S28=n [cmds]

  Default:               8

  Range:                 0 - 255

  Unit:                  .1 second

  Description:           Sets length of V.32 handshake. A value of 255
                         means that the modem will only accept
                         connections with V.32 at 9600bps.

                               V.34 MAPPING

  Type:                  Register

  Format:                AT [cmds] S34=n [cmds]

  Default:               0

  Range:                 0 - 255

  Description:           Controls V.34 mapping, non-linear coding,
                         transmit level deviation, pre-emphasis, and
                         pre-coding.

   Bit        Value                          Function

    0                0   8S-2D map enabled.

                    1    8S-2D map disabled.

    1                0   16S-4D map enabled.

                    1    16S-4D map disabled.

    2                0   32S-2D map enabled.

                    1    32S-2D map disabled.

    3                0   64S-4D map enabled.

                    1    64S-4D map disabled.

    4                0   Non-linear coding enabled.

                    1    Non-linear coding disabled.

    5                0   Transmit level deviation enabled.

                    1    Transmit level deviation disabled.

    6                0   Pre-emphasis enabled.

                    1    Pre-emphasis disabled.

    7                0   Pre-coding enabled.

                    1    Pre-coding disabled.

                               V.34 OPTIONS

  Type:            Register

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

  Default:         0

  Range:           0 - 255

  Description:     Controls V.34 baud rate and shaping.

   Bit    Value                           Function

    0          0   2400 baud rate enabled.

              1    2400 baud rate disabled.

    1          0   2743 baud rate enabled.

              1    2743 baud rate disabled.

    2          0   2800 baud rate enabled.

              1    2800 baud rate disabled.

    3          0   3000 baud rate enabled.

              1    3000 baud rate disabled.

    4          0   3200 baud rate enabled.

              1    3200 baud rate disabled.

    5          0   3429 baud rate enabled.

              1    3429 baud rate disabled.

    6         0    Not used.

    7          0   Shaping enabled.

              1    Shaping disabled.

