
PRACTICAL PERIPHERALS, INC.

PM14400FXMT

Card Type                    Modem (asynchronous)
Chip Set                     Unidentified
Maximum Modem Rate           14.4Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.21, V.22, V.22bis, V.32, V.32bis
Fax Modulation Protocol      ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    Class I & II

Data Bus                     External

                             DIAGNOSTIC LED(S)

   LED        Color          Status                 Condition

   AA      Unidentified        On              Auto-answer enabled

   AA      Unidentified        Off             Auto-answer disabled

   AA      Unidentified     Blinking             Phone is ringing

   RX      Unidentified        On            Modem is receiving data

   RX      Unidentified        Off         Modem is not receiving data

   TX      Unidentified        On           Modem is transmitting data

   TX      Unidentified        Off        Modem is not transmitting data

   CD      Unidentified        On            Carrier signal detected

   CD      Unidentified        Off         Carrier signal not detected

   OH      Unidentified        On               Modem is off-hook

   OH      Unidentified        Off               Modem is on-hook

   RS      Unidentified        On          Modem is ready to send data

   RS      Unidentified        Off       Modem is not ready to send data

   TR      Unidentified        On               DTR signal is high

   TR      Unidentified        Off              DTR signal is low

   EC      Unidentified        On            Error correction enabled

   EC      Unidentified        Off          Error correction disabled

   CS      Unidentified        On          Modem is clear to send data

   CS      Unidentified        Off       Modem is not clear to send data

   MR      Unidentified        On                  Power is on

   MR      Unidentified        Off                 Power is off



                           SUPPORTED COMMAND SET

                             Basic AT Commands

  AT, +++, A/

  A, D, E, H, M, V, W, X, Y, Z

  &A, &B, &F, &L, &R, &S, &T, &V, &W, &Y, &Z

                                S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S26,
  S30, S36, S37, S38, S46,

  S48, S82, S86, S95, S108, S109, S110

  Note: See MHI Help File for full command documentation.











                         Proprietary AT Command Set

                            AUTO-MODE DETECTION

  Type:                  Configuration

  Format:                AT [cmds] Nn [cmds]

  Description:           Selects various options for the automatic
                         detection and negotiation of protocols during
                         the handshake process if the modem is
                         communicating with a remote modem of dissimilar
                         speed.

        Command                              Function

          N0             Auto-mode detection disabled

          N1             In originate mode, handshake begins at line
                         speed designated by the S37 register. Modem can
                         shift to a slower speed if necessary.

                         In answer mode, handshake attempted with the
                         following protocols in order - V.FC, V.32bis,
                         V.32, V.22bis, V.22 or Bell 212, V.21, and Bell
                         103

                    CLOCK SOURCE - SYNCHRONOUS TRANSMIT

  Type:          Configuration

  Format:        AT [cmds] &Xn [cmds]

  Description:   Selects DTE transmit clock source

    Command                              Function

      &X2        Modem generates clock from the receive carrier signal

                          COMMUNICATION PROTOCOLS

  Type:                  Configuration

  Format:                AT [cmds] Bn [cmds]

  Description:           Selects the communication protocol for data
                         calls

            Note: The B command allows the simultaneous selection of more
            than one suffix, enabling multiple protocols.

        Command                              Protocol

          B0             ITU-T V.22 at 1200bps

          B1             Bell 212A at 300 or 1200bps

          B2             ITU-T V.23 at 75/1200bps

          B3             ITU-T V.23 at 1200/75bps

          B15            ITU-T V.21 at 300bps

          B16            Bell 103 at 300bps

                            COMMUNICATIONS MODE

  Type:          Configuration

  Format:        AT [cmds] &Mn [cmds]

  Description:   Selects communications mode

    Command                                Mode

      &M0        Asynchronous mode









                            COMMUNICATIONS MODE

  Type:           Configuration

  Format:         AT [cmds] &Qn [cmds]

  Description:    Selects communications mode options

    Command                                Mode

      &Q0         Asynchronous mode, serial port speed follows connect
                  speed.

      &Q1         Synchronous mode 1

      &Q2         Synchronous mode 2

      &Q3         Synchronous mode 3

      &Q3         Hayes AutoSync mode

      &Q5         Error correction mode

      &Q6         Buffered asynchronous mode

      &Q8         MNP operational mode

      &Q9         Conditional data compression

                         DATA CARRIER DETECT (DCD)

  Type:          Configuration

  Format:        AT [cmds] &Cn [cmds]

  Description:   Selects whether the DCD option is enabled or disabled

    Command                              Function

      &C0        DCD enabled

      &C1        DCD enabled after carrier signal detected

      &C2        DCD signal on except during disconnect

                         DATA TERMINAL READY (DTR)

  Type:                  Configuration

  Format:                AT [cmds] &Dn [cmds]

  Description:           Selects modem response to DTR

            Note: The action each variant of &D causes depends on the
            setting of &Q

        Command                              Function

          &D0            Modem does not respond to DTR

          &D1            Modem goes to command mode after DTR goes is off

          &D2            Modem goes to command mode and disconnects
                         (hangs up) after DTR goes off; Auto-Answer is
                         disabled.

          &D3            Modem is initialized after DTR goes off

























                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] &Kn [cmds]

  Description:   Enables flow control options

    Command                              Function

      &K0        Flow control disabled

      &K1        RTS to CTS flow control enabled

      &K2        XON/XOFF flow control enabled

      &K3        RTS/CTS flow control enabled

      &K4        XON/XOFF flow control enabled

      &K5        Transparent XON/XOFF flow control enabled

      &K6        RTS/CTS flow control with pass through enabled

      &K7        RTS/CTS flow control with XON/XOFF DCE to DCE enabled

                                GUARD TONE

  Type:           Configuration

  Format:         AT [cmds] &Gn [cmds]

  Description:    Commands the modem to transmit a guard tone in
                  V.22/V.22bis

            Note: Used primarily for international data transmission

    Command                              Function

      &G0         Guard tone disabled

                                   HELP

  Type:          Immediate

  Format:        AT [cmds] $H

  Description:   Accesses summary of the modems commands

                                  ON-LINE

  Type:           Immediate

  Format:         AT [cmds] On [cmds]

  Description:    Controls on-line command (data transmission) state
                  options.

            Note: The O command must be placed at the end of the command
            string.

     Command                             Function

       O0         On-line command mode with no retraining enabled

       O1         On-line command mode with retraining enabled

       O2         On-line command mode and initiate rate negotiation























                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports modem model and speed

       I1        Reports ROM checksum

       I2        Perform ROM checksum, returns OK or ERROR

       I3        Reports firmware revision number

       I4        Reports modem feature availability

       I6        Reports link statistics

                               RESULT CODES

  Type:                  Configuration

  Format:                AT [cmds] Qn [cmds]

  Description:           Enables modem to send result codes to the DTE

        Command                              Function

           Q0            Result code sending enabled

           Q1            Result code sending disabled

           Q2            Modem returns result codes when originating a
                         call, but does not return result codes from the
                         answer mode.

                              SPEAKER VOLUME

  Type:          Configuration

  Format:        AT [cmds] Ln [cmds]

  Description:   Controls speaker volume

    Command                              Function

       L0        Low volume setting

       L1        Low volume setting

       L2        Medium volume setting

       L3        Highest volume setting

                          TRELLIS CODE MODULATION

  Type:          Immediate

  Format:        AT [cmds] &U [cmds]

  Description:   Controls trellis encoding

    Command                              Function

      &U0        Enables trellis encoding

      &U1        Disables trellis encoding













                            S(status) -REGISTERS

                            BUFFER LOWER LIMIT

  Type:           Register

  Format:        AT [cmds] S49=n [cmds]

  Range:         1-249

  Default:       64

  Unit:          bytes

  Description:   Sets the lower limit of the buffer

                            BUFFER UPPER LIMIT

  Type:           Register

  Format:        AT [cmds] S50=n [cmds]

  Range:         2-250

  Default:       bytes

  Unit:          220

  Description:   Sets the upper limit of the buffer

                                 DCE SPEED

  Type:          Register

  Format         AT [cmds] S43? [cmds]

  Description:   Displays the DCE speed of the current connection

                                PACKET SIZE

  Type:          Register

  Format         AT [cmds] S136=n [cmds]

  Range:         0-2

  Unit:          frame size

  Description:   Designates the LAP-M packet size

                       PRIVATE CIRCUIT CARRIER LEVEL

  Type:            Register

  Format           AT [cmds] S63=n [cmds]

  Range:           0-15

  Units:           -dBm

  Description:     Controls the carrier power level in dBm for leased
                   line operation.

                               PROBE TIMING

  Type:                   Register

  Format:                 AT [cmds] S97=n [cmds]

  Range:                  15-70

  Unit:                   0.1 sec

  Description:            Sets the duration of the signal used by the
                          modem in answer mode during a V.32 automode
                          handshake to determine if the calling modem is
                          a V.22 or V.22bis type modem





                               RING SETTINGS

  Type:          Register

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

  Range:         0-255

  Unit:          bit map

  Description:   Sets the distinctive ring setting

