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 |
   |----------------------------------------+--------+----------|
   | i DTR normal                           | SW1/1  |   Off    |
   |----------------------------------------+--------+----------|
   | DTR forced high                        | SW1/1  |    On    |
   |----------------------------------------+--------+----------|
   | i Verbal result codes                  | SW1/2  |   Off    |
   |----------------------------------------+--------+----------|
   | Numeric result codes                   | SW1/2  |    On    |
   |----------------------------------------+--------+----------|
   | i Enable result codes displayed        | SW1/3  |    On    |
   |----------------------------------------+--------+----------|
   | Disable result codes displayed         | SW1/3  |   Off    |
   |----------------------------------------+--------+----------|
   | i Local echo enabled                   | SW1/4  |   Off    |
   |----------------------------------------+--------+----------|
   | Local echo disabled                    | SW1/4  |    On    |
   |----------------------------------------+--------+----------|
   | i Auto answer disabled                 | SW1/5  |    On    |
   |----------------------------------------+--------+----------|
   | Auto answer enabled                    | SW1/5  |   Off    |
   |----------------------------------------+--------+----------|
   | i CD signal normal                     | SW1/6  |   Off    |
   |----------------------------------------+--------+----------|
   | CD signal forced high                  | SW1/6  |    On    |
   |----------------------------------------+--------+----------|
   | i RJ-11                                | SW1/7  |   Off    |
   |----------------------------------------+--------+----------|
   | RJ-12, RJ-13                           | SW1/7  |    On    |
   |----------------------------------------+--------+----------|
   | i Smart mode enabled                   | SW1/8  |    On    |
   |----------------------------------------+--------+----------|
   | Dumb mode enabled                      | SW1/8  |   Off    |
   |----------------------------------------+--------+----------|
   | i Normal operation enabled             | SW1/9  |    On    |
   |----------------------------------------+--------+----------|
   | Escape sequence enabled                | SW1/9  |   Off    |
   |----------------------------------------+--------+----------|
   | i 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   |   i 0 | HST high frequency equalization enabled     |
   |      |       |                                             |
   |      |     1 | HST high frequency equalization disabled    |
   |------+-------+---------------------------------------------|
   | 1 -  |  i 00 | Not used                                    |
   |  2   |       |                                             |
   |------+-------+---------------------------------------------|
   |  3   |   i 0 | Non-error-correcting mode transmit buffer   |
   |      |       | set to 1.5KB                                |
   |      |     1 |                                             |
   |      |       | Non-error-correcting mode transmit buffer   |
   |      |       | set to 128 bytes                            |
   |------+-------+---------------------------------------------|
   |  4   |   i 0 | MNP 4 enabled                               |
   |      |       |                                             |
   |      |     1 | MNP 4 disabled                              |
   |------+-------+---------------------------------------------|
   |  5   |   i 0 | Disable Specialized application             |
   |      |       |                                             |
   |      |     1 | Enable Specialized application only         |
   |------+-------+---------------------------------------------|
   |  6   |   i 0 | MNP normal                                  |
   |      |       |                                             |
   |      |     1 | MNP adjusted for non compliant modems       |
   |------+-------+---------------------------------------------|
   |  7   |   i 0 | InterBridge compatibility disabled          |
   |      |       |                                             |
   |      |     1 | InterBridge compatibility enabled           |
   +------------------------------------------------------------+