(TXT) View Source
       
       # 3COM CORPORATION
       
          DIRECT 2400PC
       
          Modem Type               Data (synchronous/asynchronous)       
          Maximum Data Rate        2400bps                               
          Data Bus                 8-bit ISA                             
          Data Modulation Protocol Unidentified                          
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |      Purpose      | Location |     Purpose      | Location |
          |-------------------+----------+------------------+----------|
          | Line out          |   CN1    | Volume           |   SW2    |
          |-------------------+----------+------------------+----------|
          | Line in           |   CN2    |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         DTR SIGNAL                         |
          |------------------------------------------------------------|
          | Setting                    |             SW1/1             |
          |----------------------------+-------------------------------|
          | » On                       |        DTR forced high        |
          |----------------------------+-------------------------------|
          | Off                        |          DTR normal           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        RESULT CODES                        |
          |------------------------------------------------------------|
          | Setting                    |             SW1/2             |
          |----------------------------+-------------------------------|
          | » Off                      | Verbose result codes enabled  |
          |----------------------------+-------------------------------|
          | On                         | Numeric result codes enabled  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    RESULT CODES DISPLAY                    |
          |------------------------------------------------------------|
          | Setting                    |             SW1/3             |
          |----------------------------+-------------------------------|
          | » On                       |        Display enabled        |
          |----------------------------+-------------------------------|
          | Off                        |       Display disabled        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   ECHO COMMANDS DISPLAY                    |
          |------------------------------------------------------------|
          | Setting                    |             SW1/4             |
          |----------------------------+-------------------------------|
          | » Off                      |      Local echo enabled       |
          |----------------------------+-------------------------------|
          | On                         |      Local echo disabled      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        AUTO ANSWER                         |
          |------------------------------------------------------------|
          | Setting              |                SW1/5                |
          |----------------------+-------------------------------------|
          | » On                 | Modem does not answer on first ring |
          |----------------------+-------------------------------------|
          | Off                  |     Modem answers on first ring     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       CARRIER DETECT                       |
          |------------------------------------------------------------|
          | Setting                    |             SW1/6             |
          |----------------------------+-------------------------------|
          | » Off                      |           CD normal           |
          |----------------------------+-------------------------------|
          | On                         |        CD forced high         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  MULTI-LINE INSTALLATION                   |
          |------------------------------------------------------------|
          | Setting                    |             SW1/7             |
          |----------------------------+-------------------------------|
          | » Off                      |    Single phone connected     |
          |----------------------------+-------------------------------|
          | On                         |   Multiple phones connected   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       AT COMMAND SET                       |
          |------------------------------------------------------------|
          | Setting                    |             SW1/8             |
          |----------------------------+-------------------------------|
          | » On                       |    AT command set enabled     |
          |----------------------------+-------------------------------|
          | Off                        |    AT command set disabled    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        ESCAPE CODE                         |
          |------------------------------------------------------------|
          | Setting |                      SW1/9                       |
          |---------+--------------------------------------------------|
          | » On    |  Go to command mode and display OK result code   |
          |         |        when escape character is received         |
          |---------+--------------------------------------------------|
          | Off     |  Disconnect, go to command mode and display NO   |
          |         |    CARRIER when escape character is received     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 FACORY CONFIGURED SETTINGS                 |
          |------------------------------------------------------------|
          |           Switch            |           Setting            |
          |-----------------------------+------------------------------|
          |           SW1/10            |             Off              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 BASE I/O ADDRESS SELECTION                 |
          |------------------------------------------------------------|
          |     Address      |         J1         |         J2         |
          |------------------+--------------------+--------------------|
          |   COM1: (3F8h)   | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |   COM2: (2F8h)   | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
          |------------------+--------------------+--------------------|
          |   COM3: (3E8h)   | Pins 1 & 2 closed  | Pins 2 & 3 closed  |
          |------------------+--------------------+--------------------|
          |   COM4: (2E8h)   | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         INTERRUPT                          |
          |------------------------------------------------------------|
          |            IRQ             |              J5               |
          |----------------------------+-------------------------------|
          |             3              |       Pins 3 & 5 closed       |
          |----------------------------+-------------------------------|
          |             4              |       Pins 1 & 3 closed       |
          |----------------------------+-------------------------------|
          |             5              |       Pins 2 & 4 closed       |
          |----------------------------+-------------------------------|
          |             7              |       Pins 4 & 7 closed       |
          +------------------------------------------------------------+
       
                            Proprietary AT Command Set
       
                  See document V1255 for a full command summary.