
MICROCOM, INC.

AX/1200

Card Type                    Modem (synchronous/asynchronous)
Chipset                      Microcom, Inc.
Maximum Onboard Memory       8K battery-backup DRAM
Maximum Data Rate            1200bps
Data Bus                     Serial
Data Modulation              Bell 103A/212A

                             ITU-T V.22
Error Correction/Compression MNP4

[Image]

                                CONNECTIONS

     Function       Label                Function                 Label

  Line out              CN1      Volume                             R1

  Line in               CN2      Talk/data switch                   SW3

  DC power              CN3      Synchronous/asynchronous switch    SW4

  RS-232/422            CN4      Reset switch                       SW5

                        USER CONFIGURABLE SETTINGS

                  Setting                      Label         Position

  Busy out disabled                             JP1         Pins 3 & 4
                                                              closed

  Busy out enabled                              JP1         Pins 1 & 2
                                                              closed

  Receiver sensitivity set to -10 to -43        JP2         Pins 3 & 4
  dBm                                                         closed

  Receiver sensitivity set to 0 to -33 dBm      JP2         Pins 1 & 2
                                                              closed

  Pin 12 of RS-232 port indicates 1200bps      JP3/A          Closed
  connection

  Pin 12 of RS-232 port does not indicate      JP3/A           Open
  1200bps connection

  Synchronous transmit clock on RS-232 pin     JP3/B          Closed
  15 enabled

  Synchronous transmit clock on RS-232 pin     JP3/B           Open
  15 disabled

                    USER CONFIGURABLE SETTINGS (CONT)

                  Setting                      Label         Position

  Pin 15 of RS-232 port does not indicate      JP3/C           Open
  1200bps connection

  Pin 15 of RS-232 port indicates 1200bps      JP3/C          Closed
  connection

  RTS signal in on RS-232 pin 15 disabled      JP3/D           Open

  RTS signal in on RS-232 pin 15 enabled       JP3/D          Closed

  Factory configured - do not alter             JP4            N/A

  DTR normal                                   SW1/1            On

  DTR forced high                              SW1/1           Off

  Microcom SX command set enabled              SW1/2            On
  (asynchronous mode only)

  AT command set enabled (asynchronous mode    SW1/2           Off
  only)

  Result codes disabled (asynchronous mode     SW1/3            On
  only)

  Result codes enabled (asynchronous mode      SW1/3           Off
  only)

  Command echo disabled (asynchronous mode     SW1/4           Off
  only)

  Command echo enabled (asynchronous mode      SW1/4            On
  only)

  Auto-answer enabled (asynchronous mode       SW1/5            On
  only)

  Auto-answer disabled (asynchronous mode      SW1/5           Off
  only)

  CD normal (asynchronous mode only)           SW1/6            On

  CD forced high (asynchronous mode only)      SW1/6           Off

  Verbose result codes enabled                 SW1/7            On
  (asynchronous mode only)

  Numeric result codes enabled                 SW1/7           Off
  (asynchronous mode only)

  Command sets disabled (asynchronous mode     SW1/8            On
  only)

  Command sets enabled (asynchronous mode      SW1/8           Off
  only)

  MNP result codes disabled (asynchronous      SW2/5            On
  mode only)

  MNP result codes enabled (asynchronous       SW2/5           Off
  mode only)

  Factory defaults not restored on reset       SW2/6            On
  (asynchronous AT command set only)

  Factory defaults restored on reset           SW2/6           Off
  (asynchronous AT command set only)

  Switched line type (synchronous mode         SW2/6            On
  only)

  Leased line type (synchronous mode only)     SW2/6           Off

  Configuration not set to switch settings     SW2/7            On
  on reset (asynchronous mode only)

  Configuration set to switch settings on      SW2/7           Off
  reset (asynchronous mode only)

  Auto-answer disabled (synchronous mode       SW2/7            On
  only)

  Auto-answer enabled (synchronous mode        SW2/7           Off
  only)

  Factory configured - do not alter            SW2/8           Off

                 AUTO-DIAL NUMBER (SYNCHRONOUS MODE ONLY)

     Setting         SW1/4          SW1/5         SW1/6         SW1/7

  First number        Off            On            On             On

  Second number        On            Off           On             On

  Third number         On            On            Off            On

  Fourth number        On            On            On            Off

    Disabled           On            On            On             On

                 FLOW CONTROL (ASYNCHRONOUS MODE ONLY)

   Modem to DTE    Modem to Modem         SW2/1            SW2/2

     Disabled         Disabled             On                On

     XON/XOFF         XON/XOFF             On               Off

     RTS/CTS          XON/XOFF             Off               On

     Disabled         Disabled             Off              Off

              CONNECT MODE (ASYNCHRONOUS MODE ONLY)

       Setting                SW2/3                SW2/4

     Normal mode               On                    On

     Direct mode               Off                  Off

    Reliable mode              On                   Off

  Auto-reliable mode           Off                   On

             CD, DSR, AND CTS SIGNALS (SYNCHRONOUS MODE ONLY)

    CD Signal         DSR Signal        CTS Signal       SW2/4     SW2/5

   Forced high        Forced high       Forced high       On        On

      Normal          Follows OH          Normal          On        Off

  High except at     High except at    High except at     Off       On
    disconnect        disconnect        disconnect

      Normal          Forced high       Forced high       Off       Off

                             DIAGNOSTIC LED(S)

    LED          Color           Status                Condition

    PWR       Unidentified         On                 Power is on

    PWR       Unidentified         Off               Power is off

    TST       Unidentified         On          System error has occurred
                                                or modem is retraining

    TST       Unidentified      Blinking       Serial port is waiting to
                                                     be configured

    TST       Unidentified      One blink       Data error has occurred

    TST       Unidentified         Off             Normal operation

    OH        Unidentified         On              Modem is off-hook

    OH        Unidentified         Off             Modem is on-hook

    HS            Red              On            Modem is operating at
                                                        1200bps

    HS            Red              Off           Modem is operating at
                                                        300bps

    DTR       Unidentified         On             DTR signal is high

    DTR       Unidentified         Off             DTR signal is low

    TX        Unidentified      Blinking      Modem is transmitting data

    TX        Unidentified         Off         Modem is not transmitting
                                                         data

    RX        Unidentified      Blinking        Modem is receiving data

    RX        Unidentified         Off        Modem is not receiving data

                        SUPPORTED STANDARD COMMANDS

                             Basic AT Commands

  +++, comma, A/

  A, B, E, H, I, M, O, P, Q, T, V, X, Z

  &D, &F, &G, &L, &M, &P, &R, &T, &W, &Z

                           Extended AT Commands

  \A, \B, \C, \E, \G, \J, \L, \N, \O, \Q, \T, \U, \V, \X, \Y, \Z

  %A, %E

                                S-Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S12, S14, S16, S18, S21,
  S22, S23, S25, S26, S27

            Note: See MHI documentation for complete information.

           See MICROCOM, INC. AX/2400 for a full command summary.

