
PRACTICAL PERIPHERALS, INC.

PC PCMCIA 288, PC PCMCIA 288 EZ-PORT

Card Type                    Modem (asynchronous)
Chip Set                     Unidentified
Maximum Modem Rate           28.8Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.34, V.32bis, V.32, V.22bis, V.22,
                             V.21, V.FC
Fax Modulation Protocol      ITU-T V.17, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    Class I & II
Data Bus                     PCMCIA

                                                                      54792

                           SUPPORTED COMMAND SET

                             Basic AT Commands

  AT, +++, A/

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

  &A, &G, &S, &V, &W, &Y, &Z

                                S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, 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

                          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

          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.

      &Q4         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 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

















                          FACTORY DEFAULT PROFILE

  Type:             Configuration

  Format:           AT [cmds] &F [cmds]

  Description:      Sets values in active profile to values found in the
                    default profile

     Command                              Function

       &F0          Restore factory default Hayes-compatible parameters

       &F1          Restore factory default IBM-compatible parameters

       &F2          Restore factory default Macintosh software handshake
                    parameters

       &F3          Restore factory default Macintosh hardware handshake
                    parameters

                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] &Kn [cmds]

  Description:   Enables flow control options

    Command                              Function

      &K0        Flow control disabled

      &K3        RTS/CTS flow control enabled

      &K4        XON/XOFF flow control enabled

                                   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 with 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        Performs a ROM checksum, reports 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:      Command is included for compatibility only. It
                    performs no function

                                TEST MODES

  Type:          Immediate

  Format:        AT [cmds] &Tn

  Description:   Selects test options

    Command                              Function

      &T0        End current test

      &T1        Begin local analog loopback test

      &T3        Begin local digital loopback

      &T4        Grant remote digital loopback request

      &T5        Deny remote digital loopback request

      &T6        Request remote digital loopback

      &T7        Request remote digital loopback and self-test

      &T8        Begin local analog loopback and self-test

      &T19       Perform RTS/CTS cable test













                          TRELLIS CODE MODULATION

  Type:          Immediate

  Format:        AT [cmds] &U [cmds]

  Description:   Controls trellis encoding

    Command                              Function

      &U0        Enables trellis encoding

      &U1        Disables trellis encoding

                            V.32 - AUTO-RETRAIN

  Type:            Configuration

  Format:          AT [cmds] &Bn [cmds]

  Description:     Controls auto-retrain function if poor line quality is
                   detected

     Command                             Function

       &B0         Auto-retrain disabled modem hangs-up

       &B1         Auto-retrain enabled if line quality is poor

       &B2         Auto-retrain enabled, disconnect if line quality is
                   poor

                            S(status) -REGISTERS

                                 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

  Unit:            -dBm

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

                               PROBE TIMING

  Type:                   Register

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

  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-mapped

  Description:   Sets the distinctive ring setting

