U.S. ROBOTICS, INC.

COURIER 2400PC

Card Type                Modem (Asynchronous)
Chip Set                 U.S. Robotics
Maximum Data Rate        2400bps
Data Bus                 Unidentified
Data Modulation Protocol Unidentified

                                                                      V1984

                        USER CONFIGURABLE SETTINGS

                      Setting                         Label      Position

  DTR normal                                          SW1/1        Off

  DTR forced high                                     SW1/1        On

  Verbal result codes                                 SW1/2        Off

  Numeric result codes                                SW1/2        On

  Enable result codes displayed                       SW1/3        On

  Disable result codes displayed                      SW1/3        Off

  Local echo enabled                                  SW1/4        Off

  Local echo disabled                                 SW1/4        On

  Auto answer disabled                                SW1/5        On

  Auto answer enabled                                 SW1/5        Off

  CD signal normal                                    SW1/6        Off

  CD signal forced high                               SW1/6        On

  RJ-11                                               SW1/7        Off

  RJ-12, RJ-13                                        SW1/7        On

  Smart mode enabled                                  SW1/8        On

  Dumb mode enabled                                   SW1/8        Off

  Normal operation enabled                            SW1/9        On

  Escape sequence enabled                             SW1/9        Off

  Restore NVRAM defaults                              SW1/10       Off

  Restore factory defaults                            SW1/10       On

                         Proprietary AT Command Set

                          BIT-MAPPED REGISTER S15

  Format                AT [cmds] S15=n [cmds]

  Default:              0

  Range:                0-81

  Unit:                 Bit-mapped

  Description:          Controls HST high frequency equalization,
                        non-error-correcting mode buffer, MNP4, BS/DEL
                        switch, MNP compliance and InterBridge
                        compatibility.

   Bit       Value                          Function

    0               0   HST high frequency equalization enabled

                   1    HST high frequency equalization disabled

  1 - 2           00    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   Disable Specialized application

                   1    Enable Specialized application only

    6               0   MNP normal

                   1    MNP adjusted for non compliant modems

    7               0   InterBridge compatibility disabled

                   1    InterBridge compatibility enabled

               See document V1983 for a full command summary.