
PRACTICAL PERIPHERALS, INC.

PC144MT/MC144MT

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.21, V.22, V.22bis, V.32, V.32bis
Fax Modulation Protocol      ITU-T V.17, V.27ter, V.29
Error Correction/Compression MNP5, 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

     AA          Red            On              Auto-answer enabled

     AA          Red            Off             Auto-answer disabled

     AA          Red         Blinking             Phone is ringing

     RX          Red            On            Modem is receiving data

     RX          Red            Off         Modem is not receiving data

     TX          Red            On           Modem is transmitting data

     TX          Red            Off        Modem is not transmitting data

     CD          Red            On            Carrier signal detected

     CD          Red            Off         Carrier signal not detected

     CD          Red         Blinking           Modem is retraining

     OH          Red            On               Modem is off-hook

     OH          Red            Off               Modem is on-hook

     HS          Red            On          Modem is operating at 4800bps
                                                     or faster

     HS          Red            Off         Modem is operating at slower
                                                    than 4800bps

     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

                                 CALLER ID

  Type:          Configuration

  Format:        AT [cmds] %CCID=n [cmds]

  Example:       AT %CCID2<CR>

  Description:   Controls the Caller ID function.

  Command                                Function

   %CCID=0      Caller ID disabled.

  %CCID=1        Caller ID displays single message.

  %CCID=2        Caller ID displays all messages.

                                COMMAND SET

  Type:                Configuration

  Format:              AT [cmds] %DUMBn [cmds]

  Example:             AT %DUMB1<CR>

  Description:         Disables the AT command set.

  Note:                The AT command set is always active for the first
                       20 seconds after the modem is powered up. AT%DUMB0
                       can be entered during this time period to
                       re-enable the command set.

  Command                                   Function

   %DUMB0             Command set enabled.

  %DUMB1               Command set disabled.

                               EXTENDED RING

  Format:             AT [cmds] S101=n [cmds]

  Example:            ATS101=40<CR>

  Default:            0

  Range:              0 - 255

  Unit:               Bit-mapped

  Description:        Selects the response to extended ring types.

     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.

                               HELP SCREENS

  Type:          Immediate

  Format:        AT [cmds] $H

  Example:       AT $H<CR>

  Description:   Shows modem help screens.

                                  REDIAL

  Type:          Immediate

  Format:        AT [cmds] DL

  Example:       AT M1 DL<CR>

  Description:   Redials the last number dialed.

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In

  Example:       AT I1 &W<CR>

  Description:   Displays modem properties.

  Command                                Function

       I0        Reports modem model and speed.

       I1        Reports checksum number.

       I2        Reports checksum result.

       I3        Reports firmware version.

       I4        Reports current command settings.

       I6        Reports current connections statistics.

