3COM CORPORATION

MICROLINK 2400

Modem Type             Data (synchronous/asynchronous)
Maximum Data Rate      2400bps
Data Bus               8-bit ISA
Data Modulation        Bell 103A/212A
Protocol
                       ITU-T V.22

[Image]

                                CONNECTIONS

         Purpose           Location            Purpose           Location

  Line out                    CN1       Line in                    CN2

                DTR SIGNAL

  Setting                   SW1/1

  » DTR forced high           On

  DTR normal                 Off

                          RESULT CODES

  Setting                                    SW1/2

  » Verbose codes enabled                     Off

  Numeric result codes enabled                On

           RESULT CODES DISPLAY

  Setting                   SW1/3

  Display disabled           Off

  » Display enabled           On

             ECHO COMMANDS DISPLAY

  Setting                        SW1/4

  » Local echo enabled            Off

  Local echo disabled             On

                                AUTO ANSWER

  Setting                                             SW1/5

  » Modem doe not answer on first                      On
  ring

  Modem answers on first ring                          Off

           CARRIER DETECT

  Setting               SW1/6

  » CD normal            Off

  CD forced high         On

                 MULTI-LINE INSTALLATION

  Setting                               SW1/7

  » Single phone connected               Off

  Multiple phones connected               On

                     AT COMMAND SET

  Setting                              SW1/8

  » AT command set enabled              On

  AT command set disabled               Off

                                ESCAPE CODE

  Setting                                              SW1/9

  » Go to command mode and display OK                   On
  result code when escape character is
  received

  Disconnect, go to command mode and                    Off
  display NO CARRIER when escape
  character is received

        VOLUME

  Setting    SW1/10

  » High      Off

  Low          On

                  BASE I/O ADDRESS SELECTION

       Address                J3                  J4

    COM1: (3F8h)             Off           Pins 2 & 3 closed

    COM2: (2F8h)              On           Pins 2 & 3 closed

    COM3: (3E8h)             Off           Pins 1 & 2 closed

    COM4: (2E8h)              On           Pins 1 & 2 closed

                INTERRUPT

         IRQ                  J5

          4           Pins 2 & 3 closed

          3           Pins 1 & 2 closed

                         Proprietary AT Command Set

               See document V1260 for a full command summary.