MULTI-TECH SYSTEMS, INC.

MT1432MK-MAC, MT1432MU-MAC, MT1432MUI-MAC

Card Type                    Modem (asynchronous)
Chipset                      Multi-Tech Systems, Inc.
Maximum Data Rate            14.4Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation              Bell 103A, 113, 212A

                             ITU-T V.21 (MT1432MUI only), V.22, V.22bis,
                             V.23, V.32, V.32bis
Fax Modulation               ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    Class II
Data Bus                     Serial

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                                CONNECTIONS

          Function             Label           Function             Label

  9V DC power in               CN1     Telephone line out           CN3

  Macintosh serial port        CN2

                      AUTO-ANSWER CONFIGURATION

              Setting                             SW1

  Standby, wait for incoming call              Position 3

                Off                            Position 2

                On                             Position 1

                          DIAGNOSTIC LED(S)

    LED        Color      Status               Condition

     TD         Red         On         Modem is transmitting data

     TD         Red         Off      Modem is not transmitting data

     RD         Red         On          Modem is receiving data

     RD         Red         Off       Modem is not receiving data

     CD         Red         On          Carrier signal detected

     CD         Red         Off       Carrier signal not detected

                         DIAGNOSTIC LED(S) (CON'T)

  14 Status     Color     96 Status    Color            Condition

     On          Red         On         Red         Modem connected at
                                                    12Kbps in V.32bis

     Off         Red         On         Red         Modem connected at
                                                         9600bps

     On          Red         Off        Red         Modem connected at
                                                         14.4Kbps

     Off         Red         Off        Red         Modem connected at
                                                   slower than 9600bps

      LED          Color          Status                Condition

       24           Red             On              Modem connected at
                                                         2400bps

       24           Red             Off           Modem not connected at
                                                         2400bps

       12           Red             On              Modem connected at
                                                         1200bps

       12           Red             Off           Modem not connected at
                                                         1200bps

       OH           Red             On              Modem is off-hook

       OH           Red          Blinking           Modem is dialing in
                                                        pulse mode

       OH           Red             Off              Modem is on-hook

       TR           Red             On              DTR signal is high

       TR           Red             Off             DTR signal is low

       EC           Red             On           Error correction enabled

       EC           Red          Blinking        Data compression enabled

       EC           Red             Off              Error correction
                                                         disabled

       FX           Red             On             Modem is connected in
                                                         FAX mode

       FX           Red             Off           Modem is not connected
                                                       in FAX mode

       LB           Red             On            Battery is low (approx.
                                                     10 minutes left)

       LB           Red             Off              Battery is good

                 SUPPORTED STANDARD COMMANDS

                      Basic AT Commands

  +++, A/

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

  &D, &G, &P, &T

                         S-Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S25, S30

            Note: See MHI help file for complete information.

                         Proprietary AT Command Set

     See MULTI-TECH SYSTEMS, INC. MT1432MU for a full command summary.