
MAXTECH CORPORATION

GM144E

Modem Type                   Data (synchronous/asynchronous)/Fax
Maximum Data Rate            14.4Kbps
Maximum Fax Rate             14.4Kbps
Data Bus                     External
Fax Class                    Class I & II
Data Modulation Protocol     Bell 103A/212A

                             ITU-T V.22, V.22bis, V.32, V.32bis
Fax Modulation Protocol      ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression MNP 5, V.42, V.42bis

[Image]

                                CONNECTIONS

         Purpose             Location          Purpose           Location

  Line out                     CN1       DC power                  CN4

  Line in                      CN2       Power switch              SW1

  RS-232/422                   CN3

                             DIAGNOSTIC LED(S)

    LED         Color         Status                 Condition

    TST          Red            On                Normal operation

    TST          Red           Flash           Modem has detected and
                                                  corrected error

     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

                         Proprietary AT Command Set

                  AUTO-RELIABLE TIME BUFFER CONFIGURATION

  Type:          Configuration

  Format:        AT [cmds] $An [cmds]

  Example:       AT $A1 &W<CR>

  Description:   Controls the handling of incoming data during
                 auto-reliable time period.

    Command                              Function

   $A0          Data is discarded.

      $A1        Data is buffered.

                             CALLBACK ATTEMPTS

  Type:          Register

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

  Example:       ATS16=6<CR>

  Default:       4

  Range:         1-255

  Unit:          1 attempt

  Description:   Sets the maximum number of login attempts after initial
                 callback connection.

                         FAILED PASSWORD ATTEMPTS

  Type:          Register

  Format:        AT [cmds] S26?

  Example:       ATS26?<CR>

  Default:       Read-only

  Range:         0-255

  Unit:          1 attempt

  Description:   This register stores the number of failed password
                 attempts.

                             DISTINCTIVE RING

  Format              AT [cmds] S101=n [cmds]

  Example:            ATS101=40<CR>

  Default:            0

  Range:              0 - 255

  Unit:               Bit-mapped

  Description:

     Bit       Value                        Function

      0         0      Do not respond to ring type A.

                 1      Respond to ring type A.

      1          0      Not used.

      2         0      Do not respond to ring type C.

                 1      Respond to ring type C.

      3         0      Do not respond to ring type D.

                 1      Respond to ring type D.

      4         0      Do not respond to ring type E.

                 1      Respond to ring type E.

      5          0      Not used.

      6         0      Do not respond to ring type G.

                 1      Respond to ring type G.

      7         0      Report RING for all ring types.

                 1      Report RING n where n is the ring type.

