
U.S. ROBOTICS, INC.

SPORTSTER PCMCIA 14.4

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

                             ITU-T V.21, V.22, V.22bis, V.23, 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

                         Proprietary AT Command Set

                                                                      V1253

                          BIT-MAPPED REGISTER S13

  Format               AT [cmds] S13=n [cmds]

  Example:             ATS13=139<CR>

  Default:             0

  Range:               0 - 89

  Unit:                Bit-mapped

  Description:         Controls DTR reset, DTR dialing, reset dialing,
                       and MNP3.

     Bit       Value                         Function

      0         0        DTR normal.

               1          Reset on low DTR.

      1         0        Not used.

      2         0        Not used.

      3         0        DTR dialing disabled.

               1          DTR dialing enabled.

      4         0        Reset dialing disabled.

               1          Reset dialing enabled.

      5         0        Not used.

      6         0        MNP 3 enabled.

               1          MNP 3 disabled.

      7         0        Not used.

                          BIT-MAPPED REGISTER S15

  Format                AT [cmds] S15=n [cmds]

  Example:              ATS15=139<CR>

  Default:              0

  Range:                0 - 56

  Unit:                 Bit-mapped

  Description:          Controls non-error-correcting mode buffer, MNP4,
                        and BS/DEL switch.

     Bit        Value                         Function

      0          0        Not used.

      1          0        Not used.

      2          0        Not used.

      3          0        Non-error-correcting mode transmit buffer set
                           to 1.5KB.
                1
                           Non-error-correcting mode transmit buffer set
                           to 128 bytes.

      4          0        MNP 4 enabled.

                1          MNP 4 disabled.

      5          0        Use backspace key for delete disabled.

                1          Use backspace key for delete enabled.

                          BIT-MAPPED REGISTER S27

  Format                    AT [cmds] S27=n [cmds]

  Example:                  ATS27=139<CR>

  Default:                  0

  Range:                    0 - 191

  Unit:                     Bit-mapped

  Description:              Controls V.21, V.32 encoding and modulation,
                            V.42 answer tone and handshake, and 9600
                            result codes.

        Bit         Value                       Function

         0           0         V.21 disabled.

                    1           V.21 enabled.

         1           0         V.32 trellis coding disabled.

                    1           V.32 trellis coding enabled.

         2           0         V.32 modulation enabled.

                    1           V.32 modulation disabled.

         3           0         2100Hz answer tone enabled.

                    1           2100Hz answer tone disabled.

       5, 4          00        V.42 detect, LAPM and MNP enabled.

                    01          V.42 detect and LAPM enabled.

                    10          MNP enabled.

                    11          LAPM enabled.

         6           0         Not used.

         7           0         Actual result codes displayed.

                    1           Force 9600 result codes.

                     COMPRESSION AND ERROR CORRECTION

  Format                AT [cmds] S51=n [cmds]

  Example:              ATS51=139<CR>

  Default:              0

  Range:                0 - 7

  Unit:                 Bit-mapped

  Description:          Selects compression and error correction for
                        specific modulations.

     Bit        Value                         Function

      0          0        MNP/V.42 disabled during V.22 operation.

                1          MNP/V.42 disabled during V.22 operation.

      1          0        MNP/V.42 disabled during V.22bis operation.

                1          MNP/V.42 disabled during V.22bis operation.

      2          0        MNP/V.42 disabled during V.32bis operation.

                1          MNP/V.42 disabled during V.32bis operation.

                               BREAK LENGTH

  Type:          Register

  Format:        AT [cmds] S21=n [cmds]

  Example:       ATS21=20<CR>

  Default:       10

  Range:         Unidentified

  Unit:          10 milliseconds

  Description:   Sets the length of error control mode breaks sent from
                 DCE to DTE.

                                BREAK TYPE

  Type:          Configuration

  Format:        AT [cmds] &Yn [cmds]

  Example:       AT &Y0<CR>

  Description:   Configures action of break signal.

  Command                                Function

  &Y0            Break empties buffer.

   &Y1          Break empties buffer and is sent immediately.

  &Y2            Break does not empty buffer and is sent immediately.

  &Y3            Break does not empty buffer and is sent with transmitted
                 data.

                          CONNECTION SPEED FORCE

  Type:          Configuration

  Format:        AT [cmds] &Nn [cmds]

  Example:       AT &N1 DT555-1212<CR>

  Description:   Sets required connection speed.,

  Command                                Function

   &N0          Variable.

  &N1            300bps

  &N2            1200bps

  &N3            2400bps

  &N4            4800bps

  &N5            7200bps

  &N6            9600bps

  &N7            12Kbps

  &N8            14.4Kbps

                           ERROR CORRECTION MODE

  Type:          Configuration

  Format:        AT [cmds] &Mn [cmds]

  Example:       AT &M1 %C1<CR>

  Description:   Selects active error correction protocols.

  Command                                Function

  &M0            Normal mode only.

   &M4          Auto-detect mode.

  &M5            ARQ mode only.

                         ESCAPE CHARACTER RESPONSE

  Type:              Register

  Format:            AT [cmds] S14=n [cmds]

  Example:           ATS14=20<CR>

  Default:           0

  Description:       Controls reaction to escape character.

  Command                                  Function

   S14=0            Normal operation.

  S14=1              When +++ is received, modem goes on hook, enters
                     command state and sends NO CARRIER result code.

                           EXTENDED RESULT CODES

  Type:          Configuration

  Format:        AT [cmds] &An [cmds]

  Example:       AT &A1 %C1<CR>

  Description:   Selects extended result codes.

  Command                                Function

  &A0            Extended result codes disabled.

  &A1            ARQ result codes enabled.

  &A2            V.32 result code enabled.

   &A3          Error control and compression result codes enabled.

                       FLOW CONTROL CHARACTER - XON

  Type:          Register

  Format:        AT [cmds] S22=n [cmds]

  Example:       ATS22=20<CR>

  Default:       17

  Range:         0-127

  Unit:          ASCII

  Description:   Sets the character used to represent XON.

                       FLOW CONTROL CHARACTER - XOFF

  Type:          Register

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

  Example:       ATS23=20<CR>

  Default:       19

  Range:         0-127

  Unit:          ASCII

  Description:   Sets the character used to represent XOFF.

                         FLOW CONTROL PASSTHROUGH

  Type:          Configuration

  Format:        AT [cmds] &In [cmds]

  Example:       AT &I0 &W<CR>

  Description:   Allows modem to act on, then transmit XON/XOFF
                 characters.

  Command                                Function

   &I0          Software flow control disabled.

  &I1            XON/XOFF passthrough enabled.

  &I2            XON/XOFF passthrough disabled.

  &I3            ENQ/ACK enabled in host mode.

  &I4            ENQ/ACK enabled in terminal mode.

  &I5            XON/XOFF passthrough disabled in error correction mode.

                             FLOW CONTROL TYPE

  Type:          Configuration

  Format:        AT [cmds] &Hn [cmds]

  Example:       AT &H0 A<CR>

  Description:   Sets type of flow control used by modem.

  Command                                Function

  &H0            Flow control disabled.

   &H1          CTS/RTS flow control enabled.

  &H2            XON/XOFF flow control enabled.

  &H3            CTS/RTS and XON/XOFF flow control enabled.

                               HELP SCREENS

  Type:                Immediate

  Format:              AT <prefix>$

  Example:             AT &$<CR>

  Description:         Shows command help screens for all commands
                       beginning with the given prefix, or no prefix if
                       none is given.

       Command                              Function

          $            Shows ATx help screen.

         &$            Shows AT&x help screen.

                             INACTIVITY TIMER

  Type:             Register

  Format:           AT [cmds] S19=n [cmds]

  Example:          ATS19=20<CR>

  Default:          0

  Range:            Unidentified

  Unit:             1 minute

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

                             LOCK SERIAL PORT

  Type:          Configuration

  Format:        AT [cmds] &Bn [cmds]

  Example:       AT &N9 &B0<CR>

  Description:   Sets operation of serial port speed.

  Command                                Function

  &B0            Serial speed follows connect speed

   &B1          Serial speed locked.

  &B2            Serial speed locked in ARQ mode only,

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Example:       AT I1 O<CR>

  Description:   Displays modem properties.

    Command                              Function

       I0        Reports product code.

       I1        Reports ROM checksum result.

       I2        Reports RAM checksum result.

       I3        Reports firmware version.

       I4        Reports current command settings.

       I5        Reports current NVRAM settings.

       I6        Reports current connections statistics.

       I7        Reports configuration.

                             TONE DIALING TEST

  Type:          Register

  Format:        AT [cmds] S16=n [cmds]

  Example:       ATS16=139<CR>

  Description:   Selects the tone dialing test

  Command                                Function

   S16=0        Tone dialing test disabled.

  S16=2          Tone dialing test enabled.

                       V.32 AND V.32bis MODULATIONS

  Format              AT [cmds] S34=n [cmds]

  Example:            ATS34=139<CR>

  Default:            0

  Range:              0 - 9

  Unit:               Bit-mapped

  Description:        Controls V.32 and V.32bis modulations.

     Bit       Value                        Function

      0         0      V.32bis enabled.

               1        V.32bis disabled.

      1          0      Not used.

      2          0      Not used.

      3         0      V.32 modulation disabled.

               1        V.32 modulation enabled.

                            V.32 HANDSHAKE TIME

  Type:          Register

  Format:        AT [cmds] S28=n [cmds]

  Example:       ATS28=20<CR>

  Default:       8

  Range:         0-255

  Unit:          .1 second

  Description:   Sets length of V.32 handshake.

