
AT&T PARADYNE

KEEPINTOUCH CARD MODEM 3760/3762/3763/3764

Modem Type                   Data (synchronous/asynchronous)/Fax
Maximum Data Rate            14.4Kbps
Maximum Fax Rate             14.4Kbps
Data Bus                     PCMCIA Type II
Fax Class                    Class I & II
Data Modulation Protocol     Bell 103A/212A

                             ITU-T V.21, V.22, V.22bis, V.32, V.32bis

                             AT&T ETC cellular protocol
Fax Modulation Protocol      ITU-T V.17, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis

                         Proprietary AT Command Set

                                                                      V1400

                           AT COMMAND SET ERRORS

  Type:          Configuration

  Format:        AT S84=n

  Example:       AT S84=1 <CR>

  Description:   Configures how the modem will respond to errors.

    Command                              Function

   S84=0        Normal operation.

     S84=1       NO_ERROR mode.

     S84=2       NO_STRAP_OR_ERROR mode.

                     AUTO-RELIABLE FALLBACK CHARACTER

  Type:              Register

  Format:            AT [cmds] %An [cmds]

  Example:           AT%A20<CR>

  Default:           13

  Range:             0-127

  Unit:              ASCII

  Description:       Sets the character used as the auto-reliable
                     fallback character. %A0 will disable this function.

                  AUTO-RELIABLE TIME BUFFER CONFIGURATION

  Type:             Configuration

  Format:           AT [cmds] \Cn [cmds]

  Example:          AT \C1 &W<CR>

  Description:      Controls the handling of incoming data during
                    auto-reliable time period.

      Command                             Function

   \C0             Data is buffered.

        \C1         Data is discarded.

        \C2         Data is discarded, modem returns to normal mode on
                    receiving auto-reliable fallback character.

                          AUTO-RETRAIN - V.32bis

  Type:          Configuration

  Format:        AT S76=n

  Example:       AT S76=1 <CR>

  Description:   Selects auto-retrain mode for V.32bis.

    Command                              Function

   S76=0        Auto-retrain enabled.

     S76=1       Auto-retrain disabled.

     S76=2       Auto-retrain enabled; speed defaults to 4800bps.

     S76=3       Auto-retrain enabled; speed defaults to 9600bps.

                                BREAK TYPE

  Type:          Configuration

  Format:        AT [cmds] \Kn [cmds]

  Example:       AT \K1 <CR>

  Description:   Configures action of break signal.

    Command                              Function

      \K0        Buffers cleared and break sent to remote modem, then
                 enter command mode.

      \K1        Buffers cleared and break sent to remote modem.

      \K2        Send break to remote modem immediately, then enter
                 command mode.

      \K3        Send break to remote modem immediately.

      \K4        Send break to remote modem with transmitted data, then
                 enter command mode.

   \K5          Send break to remote modem with transmitted data.

                                 CD SIGNAL

  Type:          Configuration

  Format:        AT [cmds] &Cn [cmds]

  Example:       AT &C4 &R2 &S2<CR>

  Description:   Configures the behavior of the carrier detect signal.

    Command                              Function

      &C0        CD forced high.

   &C1          CD normal.

      &C2        CD forced high except during disconnecting.

      &C3        CD follows DTR signal.

      &C4        CD follows remote RTS signal.

      &C5        CD forced low when DTR is low.

                                COMPRESSION

  Type:          Configuration

  Format:        AT %Cn

  Example:       AT *EC0 %C1 *AP0<CR>

  Description:   Selects data compression.

    Command                              Function

      %C0        Data compression disabled.

   %C1          Data compression enabled.

                               CONNECT MODE

  Type:          Configuration

  Format:        AT [cmds] \Nn [cmds]

  Example:       AT \N1 DT555-1212<CR>

  Description:   Sets connect mode.

    Command                              Function

      \N0        Normal mode enabled.

      \N1        Direct mode enabled.

      \N2        MNP mode only enabled.

      \N3        MNP mode with fallback to normal mode enabled.

      \N4        LAP-M mode only enabled.

      \N5        LAP-M mode with fallback to normal mode enabled.

      \N6        LAP-M mode with fallback to MNP enabled.

   \N7          LAP-M mode with fallback to MNP and normal modes
                 enabled.

                                CTS SIGNAL

  Type:          Configuration

  Format:        AT [cmds] \Dn [cmds]

  Example:       AT \D0<CR>

  Description:   Selects the function of the CTS signal.

    Command                              Function

   \D0          CTS forced high.

      \D1        CTS normal.

      \D2        DSR normal, except forced low on disconnect.

      \D3        CTS follows CD.

                          DISCONNECT BUFFER DELAY

  Type:                Register

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

  Example:             AT S49=0<CR>

  Default:             10

  Range:               0-255

  Unit:                1 second

  Description:         Configures how long the modem will wait to
                       disconnect if there is data in the transmit or
                       receive buffers.

                                DSR SIGNAL

  Type:          Configuration

  Format:        AT [cmds] &Sn [cmds]

  Example:       AT &C4 &R2 &S2<CR>

  Description:   Selects the function of the DSR signal.

    Command                              Function

      &S0        DSR forced high.

      &S1        DSR normal.

      &S2        DSR normal, except forced low on disconnect.

      &S3        DSR follows DTR.

      &S4        DSR normal, except signal is brought high early.

      &S5        DSR forced low in command mode.

                                DTR SIGNAL

  Type:          Configuration

  Format:        AT [cmds] &Dn [cmds]

  Example:       AT &D1<CR>

  Description:   Configures the behavior of the Data Terminal Ready
                 signal.

    Command                              Function

      &D0        DTR forced high.

      &D1        Modem will enter command mode on low DTR.

   &D2          Modem will disconnect on low DTR.

      &D3        Modem will disconnect and reset on low DTR.

      &D4        Modem will disconnect only on low DTR, regardless of
                 remote modem.

                               ETC PROTOCOL

  Type:          Configuration

  Format:        AT [cmds] S91=n [cmds]

  Example:       AT S91=0<CR>

  Description:   Controls the AT&T ETC protocol.

    Command                              Function

   S91=0        ETC disabled.

     S91=1       ETC enabled.

                             FACTORY DEFAULTS

  Type:          Immediate

  Format:        AT &Fn

  Example:       AT &F8<CR>

  Description:   Loads factory defaults.

    Command                              Function

      &F0        Reloads factory configuration.

      &F5        Reloads factory configuration for ETC in cellular mode.

      &F6        Reloads factory configuration for ETC in switched line
                 mode.

                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] \Gn [cmds]

  Example:       AT \G1 &K3<CR>

  Description:   Selects modem port flow control.

    Command                              Function

   \G0          Flow control disabled.

      \G1        Flow control enabled.

                             FLOW CONTROL TYPE

  Type:          Configuration

  Format:        AT [cmds] \Qn [cmds]

  Example:       AT \Q5<CR>

  Description:   Sets type of flow control used by modem.

    Command                              Function

      \Q0        Flow control disabled.

   \Q1          Bidirectional XON/XOFF flow control enabled.

      \Q2        CTS flow control by DCE disabled.

      \Q3        Bidirectional CTS/RTS flow control enabled.

      \Q4        Flow control by DCE disabled.

   \Q5          XON/XOFF flow control by DCE enabled.

      \Q6        RTS flow control by DCE enabled.

                               HANG UP MODE

  Type:          Configuration

  Format:        AT [cmds] S85=n [cmds]

  Example:       AT S85=1 O<CR>

  Description:   Selects how the modem will hang up.

    Command                              Function

   S85=0        Set hang up mode to normal on next ATH command.

     S85=1       Set hang up mode to fast on next ATH command.

                             INACTIVITY TIMER

  Type:             Register

  Format:           AT [cmds] \Tn [cmds]

  Example:          AT\T20<CR>

  Default:          Unidentified

  Range:            0-255

  Unit:             1 minute

  Description:      Sets the length of time that the modem does not
                    receive information before it disconnects.

                          LOCAL SERIAL PORT SPEED

  Type:          Configuration

  Format:        AT [cmds] %Rnnn [cmds]

  Example:       AT %B9600 %R19200<CR>

  Description:   Sets serial port speed.

    Command                              Function

     %R300       Sets 300bps speed.

     %R600       Sets 600bps speed.

     %R1200      Sets 1200bps speed.

     %R2400      Sets 2400bps speed.

     %R4800      Sets 4800bps speed.

     %R9600      Sets 9600bps speed.

    %R12000      Sets 12Kbps speed.

    %R14400      Sets 14.4Kbps speed.

    %R19200      Sets 19.2Kbps speed.

    %R38400      Sets 38.4Kbps speed.

    %R57600      Sets 57.6Kbps speed.

                             LOCK SERIAL PORT

  Type:          Configuration

  Format:        AT [cmds] S90=n [cmds]

  Example:       AT %L3 %B14 S90=0<CR>

  Description:   Sets operation of serial port speed.

    Command                              Function

   S90=0        Serial speed locked.

     S90=1       Serial speed follows connect speed.

                    MAXIMUM BLOCK SIZE FOR TRANSMISSION

  Type:          Configuration

  Format:        AT [cmds] \An [cmds]

  Example:       AT \A3 %C1<CR>

  Description:   Sets the maximum transmittable block size.

    Command                              Function

      \A0        MNP block size is 64 characters.

      \A1        MNP block size is 128 characters.

      \A2        MNP block size is 192 characters.

   \A3          MNP block size is 256 characters.

      \A4        MNP block size is 32 characters.

      \A5        MNP block size is 16 characters.

                            NEGOTIATE PROTOCOL

  Type:                Configuration

  Format:              AT S78=n

  Example:             AT S78=1 <CR>

  Description:         Configures whether the modem will attempt to
                       negotiate protocols or if only the protocol
                       selected in S41 will be used.

       Command                              Function

   S78=0              Negotiation enabled.

        S78=1          Negotiation disabled.

                              PROTOCOL/SPEED

  Type:          Immediate

  Format:        AT [cmds] %Bn [cmds]

  Example:       AT %B14400<CR>

  Description:   Selects the current DCE speed.

    Command                              Function

     %B300       Select 300bps speed.

     %B1200      Select 1200bps speed.

     %B2400      Select 2400bps speed.

     %B4800      Select 4800bps speed.

     %B7200      Select 7200bps speed.

     %B9600      Select 9600bps speed.

    %B12000      Select 12Kbps speed.

    %B14400      Select 14.4Kbps speed.

                              PROTOCOL/SPEED

  Type:          Register

  Format:        AT [cmds] S41=n [cmds]

  Example:       ATS41=2<CR>

  Description:   Selects the current protocol and speed.

    Command                              Function

   S41=0         V.32bis 14.4Kbps.

     S41=2        V.32bis 12Kbps.

     S41=3        V.32bis or V.32 9600bps.

     S41=4        V.32bis 7200bps.

     S41=5        V.32bis or V.32 4800bps.

     S41=6        V.22bis 2400/1200bps.

     S41=7        V.22 1200bps.

     S41=8        Bell 212A 1200bps.

     S41=10       V.21 300bps.

     S41=11       Bell 103A 300bps.

     S41=12       V.23 1200/75bps.

     S41=13       V.23 75/1200bps.

                                  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 [cmds]

  Example:       AT I3 &V1 %V<CR>

  Description:   Displays modem properties.

    Command                              Function

       I0        Reports product code.

       I1        Reports firmware version in short form.

       I2        Reports firmware checksum result.

       I3        Reports serial number.

       I4        Reports modem number.

       I5        Reports hardware part number.

       I6        Reports software part number.

       I9        Reports firmware part number.

      I11        Reports ROM checksum result.

      I17        Reports reason for last error.

      I19        Reports firmware version in long form.

                            REPORT INFORMATION

  Type:                Immediate

  Format:              AT [cmds] &Vn [cmds]

  Example:             AT I3 &V18 <CR>

  Description:         Reports configuration profiles, stored numbers,
                       and other information. If an option is preceded by
                       1, the report will be displayed repeatedly until a
                       key is pressed.

       Command                              Function

         &V0           Report current configuration.

         &V1           Report active configuration profile.

         &V2           Display profile 0.

         &V3           Display profile 1.

         &V4           Display the first two stored numbers.

         &V8           Report connection status and internal modem
                       information.

                  REPORT INFORMATION - CHANGE MODEM SPEED

  Type:          I10=mmediate

  Format:        AT [cmds] I10=n [cmds]

  Example:       AT I10=3 &V1 %V<CR>

  Description:   Changes the value reported by I0.

    Command                              Function

     I10=0       I0 will report 144 (14.4Kbps).

     I10=1       I0 will report 240 (2400bps).

     I10=2       I0 will report 480 (4800bps).

     I10=3       I0 will report 960 (9600bps).

     I10=4       I0 will report 120 (1200bps).

                            RESULT CODE FORMAT

  Type:          Immediate

  Format:        AT [cmds] Vn [cmds]

  Example:       AT V1<CR>

  Description:   Selects which type of result codes will be displayed.

    Command                              Function

       V0        Display standard numeric result codes.

   V1           Display verbose result codes.

       V2        Display AT&T numeric result codes.

                                RTS SIGNAL

  Type:          Configuration

  Format:        AT [cmds] &Rn [cmds]

  Example:       AT &C4 &R2 &S2<CR>

  Description:   Configures the behavior of the Ready to Send signal.

    Command                              Function

      &R0        RTS normal.

      &R1        RTS forced high.

   &R2          RTS follows remote CD signal.

                     SWITCHED LINE TRANSMISSION LEVEL

  Type:          Configuration

  Format:        AT [cmds] &In [cmds]

  Example:       AT &I15<CR>

  Default:       9

  Range:         10 - 25

  Unit:          -1 dBm

  Description:   Sets the signal level for transmission when in switched
                 line mode.

                              V.17 MODULATION

  Type:          Configuration

  Format:        AT S79=n

  Example:       AT S79=1 <CR>

  Description:   Selects whether V.17 can be used for fax modulation.

    Command                              Function

   S79=0        V.17 enabled.

     S79=1       V.17 disabled.

                          V.32 HANDSHAKE OPTIONS

  Type:          Configuration

  Format:        AT [cmds] S43=n [cmds]

  Example:       AT S43=0<CR>

  Description:   Shortens V.32 and V.32bis handshake time.

    Command                              Function

   S43=0        Normal handshake sequence.

     S43=1       Training time is shortened by 2 seconds in V.32 and
                 V.32bis modes.

                             V.42 WINDOW SIZE

  Type:          Configuration

  Format:        AT S89=n

  Example:       AT S89=1 <CR>

  Description:   Sets the size of the window for V.42 mode.

    Command                              Function

   S89=0        V.42 window set to 6 frames.

     S89=1       V.42 window set to 7 frames.

     S89=2       V.42 window set to 8 frames.

     S89=3       V.42 window set to 9 frames.

     S89=4       V.42 window set to 10 frames.

     S89=5       V.42 window set to 11 frames.

     S89=6       V.42 window set to 12 frames.

     S89=7       V.42 window set to 13 frames.

     S89=8       V.42 window set to 14 frames.

     S89=9       V.42 window set to 15 frames.

                           XON/XOFF PASS-THROUGH

  Type:          Configuration

  Format:        AT [cmds] \Xn [cmds]

  Example:       AT \X7 O<CR>

  Description:   Selects whether XON/XOFF signals are sent to remote
                 modem.

    Command                              Function

   \X0          XON/XOFF signals trapped by local modem.

      \X1        XON/XOFF passed through local modem.

