
SIMPLE TECHNOLOGY, INC.

28.8 COMMUNICATOR

Card Type                    Modem (asynchronous)
Chipset                      Unidentified
I/O Options                  Voice
Maximum Data Rate            28.8Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation              Bell 103A, 212A

                             ITU-T V.21, V.22bis V.23, V.32, V.32bis, V.34
Fax Modulation               ITU-T V.17, V.27ter, V.29
Error Correction/Compression MNP5, MNP10EC, V.42, V.42bis
Fax Class                    Class I & II
Data Bus                     PCMCIA Type II

                                                                      53850

                        SUPPORTED STANDARD COMMANDS

                             Basic AT Commands

  +++, comma, A/

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

  &C, &D, &F, &G, &K, &P, &Q, &R, &S, &T, &V, &W, &Y, &Z

                           Extended AT Commands

  \A, \B, \G, \J, \K, \L, \N

  %C, %E, %L, %Q

                            Special AT Commands

  :E, *H, -K, )M, @M, -Q

                                S-Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18,
  S21, S22, S23, S24, S25

  S27, S29, S30, S31, S32, S33, S36, S38, S46, S48, S82, S86, S95, S201

            Note: See MHI help file for complete information.

                         Proprietary AT Command Set

                          BIT-MAPPED REGISTER S40

  Format:                 AT [cmds] S40? [cmds]

  Default:                Read-only

  Range:                  0 - 238

  Description:            Controls MNP10 negotiation and power level
                          adjustment, break type, and MNP block size.

      Bit          Value                       Function

      1, 0              00   MNP10 disabled.

                        01   MNP10 enabled.

                       10    MNP10 enabled; MNP10 used in answer mode
                             only if remote modem specifically requests
                             it.

       2                 0   MNP10 power level adjustment disabled.

                        1    MNP10 power level adjustment enabled.

     5 - 3             000   \K0 set.

                       001   \K1 set.

                       010   \K2 set.

                       011   \K3 set.

                       100   \K4 set.

                      101    \K5 set.

      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? [cmds]

  Default:            Read-only

  Range:              0 - 219

  Description:        Selects compression, auto-retrain, flow control,
                      MNP type, and low-speed MNP10.

  Note:               Be aware that bit 6 is out of order.

   Bit      Value                          Function

  1, 0           00   Data compression disabled.

                 01   MNP5 enabled.

                 10   V.42bis enabled.

                11    MNP5 and V.42bis enabled.

  6, 2           00   Auto-retrain disabled.

                 01   Auto-retrain enabled.

                10    Auto-fallback/fall-forward enabled.

    3             0   Flow control disabled.

                 1    Flow control enabled.

    4             0   Stream mode for MNP.

                 1    Block mode for MNP.

    5            0    Not used.

    7             0   MNP10 at 2400 and 1200bps disabled.

                 1    MNP10 at 2400 and 1200bps enabled.

                                   DIAL

  Type:                  Immediate

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

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

        Command                              Function

           DJ            MNP10 link will be negotiated at 1200bps for
                         this call.

           DK            MNP10 power level adjustment enabled for this
                         call.

           DL            Re-dial last number.

           DP            Pulse dialing enabled.

          DS=n           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!            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&            Wait for prompt tone detection function enabled.
                         Waits for prompt tone for amount of time
                         specified by the S7 command.

           D^            Calling tone disabled for this call.

           D;            Modem returned to idle state after dialing. The
                         semicolon can only be placed at the end of the
                         dial command.

                            DISPLAY INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested about the modem.

    Command                              Function

       I0        Displays product identification code.

       I1        Displays ROM checksum.

       I3        Displays firmware revision.

       I4        Displays modem identifier.

       I5        Displays country code.

       I6        Displays data pump version.

       I7        Displays DAA code.

                               FLOW CONTROL

  Type:          Register (read-only)

  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         XON/XOFF and RTS/CTS flow control enabled.

                                LINE SPEED

  Type:                  Register

  Format:                AT [cmds] S37=n [cmds]

  Description:           Sets the maximum allowable data exchange rate
                         attempted during the handshaking process.

        Command                             Function

         S37=0           Attempt to connect at fastest common speed.

         S37=1           Set speed to 300bps.

         S37=2           Set speed to 300bps.

         S37=3           Set speed to 300bps.

         S37=5           Set speed to 1200bps.

         S37=6           Set speed to 2400bps.

         S37=7           Attempt to connect with V.23.

         S37=8           Set speed to 4800bps.

         S37=9           Set speed to 9600bps.

        S37=10           Set speed to 12Kbps.

        S37=11           Set speed to 14.4Kbps.

        S37=12           Set speed to 7200bps.

                          MNP10 LINK NEGOTIATION

  Type:          Register (read-only)

  Format:        AT [cmds] S28? [cmds]

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

    Command                              Function

     S28=0       Link will be negotiated at highest possible speed.

     S28=64      Link will be negotiated at 1200bps.

    S28=128      Link will be negotiated at 4800bps.

