
MAXTECH CORPORATION

PCM228R (RC288P/GEN)

Card Type                    Modem/Fax card
Chip Set                     Unidentified
I/O Options                  Line in(RJ-11)
Maximum Modem Rate           28.8Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation Protocol     Bell 103/212A

                             TU-T V.21, V.22bis, V.22, V.23, V.32,
                             V.32bis, V.34
Fax Modulation Protocol      ITU-T V.27ter, V.29
Error Correction/Compression MNP5, V.42bis, V.42
Fax Class                    Class I & II
Data Bus                     PCMCIA

                                                                      54706

                           SUPPORTED COMMAND SET

                             Basic AT Commands

  AT, +++, A/

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

  &C, &F, &P, &T, &V, &W, &Y, &Z

                           Extended AT Commands

  \A, \B, \K, \N

  %C, %L, %Q

  *H, :E

  -K

  #CID

                             Special Commands

  +MS

                                S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18,
  S21, S22, S23, S24, S25

  S26, S27, S29, S30, S31, S32, S33, S36, S37, S39, S40, S41, S46, S48

  S82, S86, S91, S92, S95, S95

  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             Auto-mode detection enabled

                            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        Direct mode enabled

      &Q3        Hayes autosync mode enabled

      &Q5        V.42 data mode with fallback options enabled

      &Q6        Normal mode enabled

                           DATA SET READY (DSR)

  Type:          Configuration

  Format:        AT [cmds] &Sn [cmds]

  Description:   Selects DSR options

    Command                              Function

      &S0        DSR forced high

      &S1        DSR high only while modem is handshaking or connected

                         DATA TERMINAL READY (DTR)

  Type:          Configuration

  Format:        AT [cmds] &Dn [cmds]

  Description:   Selects modem response to DTR

    Command                              Function

      &D0        DTR override

      &D1        DTR toggle causes online command mode

      &D2        Normal DTR operations

      &D3        Resets on receipt of DTR

                                   DIAL

  Type:                  Immediate

  Format:                AT [cmds] D<#> [cmds]

  Description:           Dials telephone number according to any
                         modifiers included in the string

  Note:                  Any combination of modifiers can be used to
                         produce the desired dial functions in sequence.

        Command                              Function

          DP             Pulse dialing enabled

         DS=n            Dial stored telephone number n

          DT             Tone dialing enabled/Pulse dialing disabled

          DW             Dialing resumed following dial tone detection

          D,             Dialing paused for amount of time specified in
                         S8 register

          D!             Flash function initiated. Modem commanded to go
                         off-hook for specified time before returning
                         on-hook.

          D;             Modem returned to idle state after dialing. The
                         semicolon can only be placed at the end of the
                         dial command.



                               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

      &K5        Transparent XON/XOFF flow control enabled

      &K6        Hardware and software flow control 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

      &G1         Guard tone disabled

      &G2         1800Hz guard tone enabled

                                 LINE TYPE

  Type:          Configuration

  Format:        AT [cmds] &Ln [cmds]

  Description:   Selects line type

    Command                             Line Type

      &L0        Switched line (PSTN/Dial-up)

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports four digit product code

       I1        Reports ROM checksum

       I2        Reports internal memory test

       I3        Reports firmware ID

       I4        Reports reserved ID

       I6        Reports data pump version

                                  RTS/CTS

  Type:          Configuration

  Format:        AT [cmds] &Rn [cmds]

  Description:   Selects RTS/CTS options

    Command                              Function

      &R0        Reserved

      &R1        CTS forced high, RTS is ignored.



                              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

                          EXTENDED AT COMMAND SET

                               AUTO-RETRAIN

  Type:          Configuration

  Format:        AT [cmds] %En [cmds]

  Description:   Controls auto-retrain mode and fallback/fall-forward

    Command                              Function

      %E0        Auto-retrain disabled

      %E1        Auto-retrain enabled

                                 MNP10EC

  Type:          Configuration

  Format:        AT [cmds] -SECn, [cmds]

  Description:   Enable/disable MNP10EC. -SEC? Displays current setting

    Command                              Function

     -SEC0       MNP10EC disabled

     -SEC1       MNP10EC enabled

                             MNP10 - FALLBACK

  Type:          Configuration

  Format:        AT [cmds] -Qn [cmds]

  Description:   Allows MNP10 to fall back to speeds slower than 4800bps

    Command                              Function

      -Q0        MNP10 fallback only to 4800bps

      -Q1        MNP10 fallback to 2400 or 1200bps

                        MNP10 - POWER LEVEL ADJUST

  Type:                Configuration

  Format:              AT [cmds] )Mn [cmds]

  Description:         Controls automatic transmit power level adjustment
                       during MNP 10 link negotiation

       Command                              Function

         )M0           Power level adjustment disabled

         )M1           Power level adjustment enabled

         )M2           Power level adjustment enabled. Power level stays
                       fixed



                            TRANSMISSION LEVEL

  Type:          Configuration

  Format:        AT [cmds] @Mn [cmds]

  Range:         11-31

  Unit:          -1dBm

  Description:   Sets the signal level for transmission

    Command                              Function

      @M0        -26 dBm

      @M1        -30 dBm

    @M2-@M10     -10 dBm

   @M11-@M30     -n dbm

                            S (STATUS) REGISTERS

                       TRANSMISSION LEVEL - CELLULAR

  Type:          Register

  Format         AT [cmds] S201=n [cmds]

  Range:         0-63

  Unit:          Unidentified

  Description:   Sets the signal level for cellular transmission



