MAXTECH CORPORATION

9600BPS TURBOMODEM EXTERNAL

Card Type                    Modem (synchronous/asynchronous)
Chip Set                     Unidentified
Maximum Data Rate            9600bps
Data Bus                     External
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.21, V.22, V.22bis, V.32
Error Correction/Compression MNP5, V.42, V.42bis

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                                CONNECTIONS

         Function           Label             Function             Label

  Line in                        CN1       DC power                 CN4

  Line out                       CN2       Power switch             SW1

  RS-232/422                     CN3

                        USER CONFIGURABLE SETTINGS

                 Setting                     Label          Position

  Smart mode                                  JP1       Pins 2 & 3 closed

  Dumb mode                                   JP1       Pins 1 & 2 closed

                             DIAGNOSTIC LED(S)

   LED       Color      Status                   Condition

   TST        Red         On       Normal operation or no error detected

   TST        Red         Off            No connection established

   TST        Red       Blinking         Error correction activated

    HS        Red         On          Modem is operating at 4800bps or
                                                   faster

    HS        Red         Off         Modem is operating at slower than
                                                  4800bps

    AA        Red         On                Auto-answer enabled

    AA        Red         Off               Auto-answer disabled

    AA        Red       Blinking              Phone is ringing

    CD        Red         On              Carrier signal detected

    CD        Red         Off           Carrier signal not detected

    OH        Red         On                 Modem is off-hook

    OH        Red         Off                 Modem is on-hook

    RD        Red         On              Modem is receiving data

    RD        Red         Off           Modem is not receiving data

    SD        Red         On             Modem is transmitting data

    SD        Red         Off          Modem is not transmitting data

    TR        Red         On                 DTR signal is high

    TR        Red         Off                DTR signal is low

    MR        Red         On                    Power is on

    MR        Red         Off                   Power is off

                           SUPPORTED COMMAND SET

                             Basic AT Commands

  AT, ‘+++’, ‘Comma’, A/

  A, B, D, E, H, L, M, O, Q, S, V, X, Y, Z

  &C, &D, &G, &L, &M, &P, &R, &S, &T, &V, &W, &X, &Y, &Z

                           Extended AT Commands

  \A, \B, \C, \E, \G, \J, \K, \Q, \O, \U, \V, \X, \Y, \Z, %A, %C

                                S Registers

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

  S25, S26, S27

  Note: See MHI Help file for full command documentation.

                         Proprietary AT Command Set

                           AUTO-DIAL ON POWER-UP

  Type:                  Configuration

  Format:                AT [cmds] %Pn [cmds]

  Description:           Controls how the modem reacts when powered up.

        Command                              Function

          %P0             Disabled

          %P1             Telephone number at memory location 0 dialed
                          after modem is powered -up, AT%P1&L0 are set to
                          enable this feature.

 See MAXTECH CORPORATION, 14400BPS TURBOMODEM INTERNAL document for a full
                              command summary.