
IBM CORPORATION

PC CARD MODEM WITH GSM

Card Type                    Modem, Fax
Chip Set                     Unidentified
Maximum Modem Rate           56Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation Protocol     Unidentified
Fax Modulation Protocol      Unidentified
Error Correction/Compression Unidentified
Fax Class                    Unidentified
Data Bus                     PCMCIA

                                                                      55021

                           SUPPORTED COMMAND SET

                             Basic AT Commands

  AT, +++, A/

  A, B, E, F, H, M, O, Q, S, V, W, X, Y, Z

  &C, &D, &R, &T, &V, &W, &Y, &Z

                           Extended AT Commands

  \A, \B, \K

  %C, %E, %L, %Q

                                S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18,
  S21, S22, S25, S26, S29,

  S30, S31, S32, S33, S38, S40, S41, S95

                             Special Commands

  +MS

  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

                            COMMUNICATIONS MODE

  Type:          Configuration

  Format:        AT [cmds] &Qn [cmds]

  Description:   Selects communications mode options

    Command                                Mode

      &Q0        Direct asynchronous mode

      &Q4        Auto-synchronous mode

      &Q5        Error correction mode

      &Q6        Buffered asynchronous mode

                           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































                                   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

          DL             Re-dial last number

          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"WXY"           Optional method of denoting telephone numbers.
                         Letters enclosed in quotes are interpreted as
                         numbers according to the system found on a
                         telephone keypad.

          D^             Changes the state of call tone

          D@             Wait for Quite Answer function enabled. Modem
                         waits until a "quiet answer," a ring-back signal
                         followed by silence up to the time specified in
                         S7, is received prior to executing the rest of
                         the dial string.

          D&             Wait for credit card (bong) tone before
                         continuing with the dial string

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

                          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          Load factory configuration 0

                               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        Both RTS/CTS & XON/XOFF flow control enabled















                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports the product code

       I1        Reports firmware checksum

       I2        Tests and reports ROM checksum

       I3        Report software release code

       I4        Report product identifier

                              SPEAKER VOLUME

  Type:          Configuration

  Format:        AT [cmds] Ln [cmds]

  Description:   Controls speaker volume

    Command                              Function

       L0        Lowest volume setting

       L1        Low volume setting

       L2        Medium volume setting

       L3        Highest volume setting

                            Extended AT Commands

                         ERROR CORECTION PROTOCOL

  Type:          Configuration

  Format:        AT [cmds] /Nn [cmds]

  Description:   Controls the error correction protocol

    Command                              Function

      /N0        MNP and LAPM disabled

      /N1        MNP and LAPM disabled

      /N2        V.42 reliable enabled

      /N3        V.42 auto-reliable mode enabled

      /N4        LAPM reliable mode enabled

      /N5        MNP reliable mode enabled

                        INITIATE MNP RELIABLE MODE

  Type:          Immediate

  Format:        AT [cmds] \O [cmds]

  Description:   Initiates MNP reliable mode from normal or direct mode















                            S(status) -REGISTERS

                            BIT-MAPPED REGISTER

  Type:            Register

  Format:          AT [cmds] S23=n [cmds]

  Unit:            Bit-mapped

  Description:     Digital loop-back control

   Bit    Value                           Function

    0          0   Remote request for remote digital loop-back disabled

              1    Remote request for remote digital loop-back enabled

  3,2,1      000   DTE baud rate = 300

             010   DTE baud rate = 1200

             011   DTE baud rate = 2400

             100   DTE baud rate = 4800

             101   DTE baud rate = 9600

            111    DTE baud rate = 19200

   5,4        00   Parity even

              01   Not used

              10   Odd parity

             11    No parity

                          BIT-MAPPED REGISTER S27

  Format               AT [cmds] S27=n [cmds]

  Default:             Unidentified

  Range:               0-111

  Unit:                Bit-mapped

  Description:         Selects synchronous/asynchronous mode, line type,
                       clock source, and ITU-T/Bell modes.

   Bit       Value                          Function

  3, 1,          000   Asynchronous mode, serial port speed follows
    0                  connect speed
                 001
                       Asynchronous off-line command mode and synchronous
                 010   connect mode

                 011   Asynchronous off-line command mode; modem
                       autodials first number in directory, then
                 100   synchronous connect mode

                 101   Asynchronous off-line command mode on low DTR,
                       synchronous connect mode on high DTR
                111
                       Auto-synchronous mode

                       Error correction mode

                       Buffered asynchronous mode

    6              0   ITU/T mode

                  1    Bell mode

    7             0    Reserved















                         CONNECTION FAILURE CODES

  Type:               Register

  Format              AT [cmds] S86? [cmds]

  Description:        Reports codes which correspond to the possible
                      causes of a connection failure

       Value                                Meaning

         0            Normal hang up

         4            Carrier signal lost

         5            No error-control detected for remote modem during
                      feature negotiation

         9            No common protocol found

         12           No failure - remote modem disconnected normally

         13           Remote modem failed to respond after 10
                      re-transmissions same message

         14           Violation of negotiated protocol caused failure

                       ERROR CORRECTION NEGOTIATION

  Type:                     Register

  Format                    AT [cmds] S36=n [cmds]

  Description:              Selects the action of the modem if it fails
                            to connect with the error-correction protocol
                            set in &Q.

        Bit           Value                     Function

      2, 1, 0               0   Modem disconnects

                            1   Modem stays on-line and a direct mode
                                connection is established
                           10
                                Reserved
                           11
                                Modem stays on-line and a normal mode
                          100   connection is established

                          101   An MNP connection is attempted and if it
                                fails, the modem disconnects
                          110
                                An MNP connection is attempted and if it
                         111    fails, a direct mode connection is
                                established

                                Reserved

                                An MNP mode connection is attempted and
                                if it fails, a normal mode connection is
                                established

       7 - 3               0    Reserved

                       ERROR CORRECTION/COMPRESSION

  Type:           Register

  Format:         AT [cmds] S46=n [cmds]

  Description:    Selects active error correction and compression
                  protocols

    Command                              Function

    S46=136       LAP-M only, no compression

    S46=138       LAP-M with V.42bis data compression

                        FEATURE NEGOTIATION OPTIONS

  Type:           Register

  Format:         AT [cmds] S48=n [cmds]

  Description:    Selects active error correction and compression
                  protocols

    Command                              Function

     S48=0        Detection negotiation disabled, XID negotiation
                  disabled

     S48=7        Detection negotiation and XID negotiation enabled

    S48=128       Fall-back to options set in S36

                               FLOW CONTROL

  Type:                Register

  Format               AT [cmds] S39=n [cmds]

  Description:         Displays the current flow control

    Bit       Value                        Function

  2, 1, 0          0   No flow control

                  11   RTS/CTS

                 100   XON/XOFF

                 101   Transparent XON

                110    Both RTS/CTS and XON/XOFF

   7 - 3          0    Reserved

                                LINE SPEED

  Type:                  Register

  Format                 AT [cmds] S37=n [cmds]

  Description:           Sets the line connection speed

     Bit        Value                        Function

  4, 3,2,1,0     00000   Attempt auto mode connection

                 00010   Attempt 300bps connection

                 00100   Attempt 300bps connection

                 00110   Attempt 300bps connection

                 00100   Reserved

                 00101   Attempt V.32bis/V.32 4800bps connection

                  0110   Attempt 2400bps connection

                 11000   Attempt V.23 connection

                 11100   Attempt V.32bis/V.32 9600bps connection

                11110    Attempt V.32bis/V.32 12000bps connection

