3COM CORPORATION
================

   AUTO DIAL S-100

   Card Type                Modem (asynchronous)                  
   Chip Set                 U.S. Robotics                         
   Maximum Data Rate        1200bps                               
   Data Bus                 External                              
   Data Modulation Protocol Bell 103/212A                         

                                                            54168

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |       Function        | Label  |   Function    |   Label   |
   |------------------------------------------------------------|
   | Line out                  |   CN1    | DC power     | CN4  |
   |---------------------------+----------+--------------+------|
   | Line in                   |   CN2    | Power switch | SW1  |
   |---------------------------+----------+--------------+------|
   | RS-232/422                |   CN3    |              |      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Setting               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   | Factory configured                  |  J1   | Unidentified |
   |-------------------------------------+-------+--------------|
   | 10-bit character transmission       |  J2   | Unidentified |
   |-------------------------------------+-------+--------------|
   | 11-bit character transmission       |  J2   | Unidentified |
   |-------------------------------------+-------+--------------|
   | Equalize for dial-up phone lines    |  J5   | Unidentified |
   |-------------------------------------+-------+--------------|
   | Equalize for dedicated phone lines  |  J5   | Unidentified |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     ADDRESS SELECTION                      |
   |------------------------------------------------------------|
   |   Setting   |  S6/A   |  S6/B   |  S6/C   |  S6/D  |  J6   |
   |-------------+---------+---------+---------+--------+-------|
   |    00/01    |   Off   |   Off   |   Off   |  Off   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    0E/0F    |   Off   |   Off   |   Off   |  Off   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    10/11    |   Off   |   Off   |   Off   |   On   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    1E/1F    |   Off   |   Off   |   Off   |   On   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    20/21    |   Off   |   Off   |   On    |  Off   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    2E/2F    |   Off   |   Off   |   On    |  Off   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    30/31    |   Off   |   Off   |   On    |   On   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    3E/3F    |   Off   |   Off   |   On    |   On   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    40/41    |   Off   |   On    |   Off   |  Off   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    4E/4F    |   Off   |   On    |   Off   |  Off   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    50/51    |   Off   |   On    |   Off   |   On   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    5E/5F    |   Off   |   On    |   Off   |   On   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    60/61    |   Off   |   On    |   On    |  Off   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    6E/6F    |   Off   |   On    |   On    |  Off   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    70/71    |   Off   |   On    |   On    |   On   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    7E/7F    |   Off   |   On    |   On    |   On   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    80/81    |   On    |   Off   |   Off   |  Off   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    8E/8F    |   On    |   Off   |   Off   |  Off   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    90/91    |   On    |   Off   |   Off   |   On   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    9E/9F    |   On    |   Off   |   Off   |   On   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    A0/A1    |   On    |   Off   |   On    |  Off   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    AE/AF    |   On    |   Off   |   On    |  Off   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    B0/B1    |   On    |   Off   |   On    |   On   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    BE/BF    |   On    |   Off   |   On    |   On   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    C0/C1    |   On    |   On    |   Off   |  Off   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    CE/CF    |   On    |   On    |   Off   |  Off   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    D0/D1    |   On    |   On    |   Off   |   On   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    DE/DF    |   On    |   On    |   Off   |   On   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    E0/E1    |   On    |   On    |   On    |  Off   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    EE/EF    |   On    |   On    |   On    |  Off   |  On   |
   |-------------+---------+---------+---------+--------+-------|
   |    F0/F1    |   On    |   On    |   On    |   On   |  Off  |
   |-------------+---------+---------+---------+--------+-------|
   |    FE/FF    |   On    |   On    |   On    |   On   |  On   |
   |------------------------------------------------------------|
   |      Note: J6 'Off' position in table corresponds to 'Up'  |
   |      position on board. J6 'On' position corresponds to    |
   |      'Down' position.                                      |
   +------------------------------------------------------------+

   +-------------------------------+
   | MISCELLANEOUS TECHNICAL NOTES |
   |-------------------------------|
   | Note: Diagram not available.  |
   +-------------------------------+

                     Proprietary AT Command Set