WESTERMO TELEINDUSTRI AB

MD-12

Card Type                Modem
Chip Set                 Unidentified
I/O Options              9-pin serial port (RS-232), terminal blocks (3)
Data Modulation Protocol ITU-T V.24/V.28
Wiring Type              Unshielded or shielded twisted pair
Maximum Data Rate        38.4Kbps
Data Bus                 External

[Image]

                                            CONNECTIONS

                Function                   Label                 Function                   Label

  DCE serial port (9 pole terminal          CN1    Network interface (4 pole terminal        CN3
  block)                                           block)

  AC power connector (3 pole terminal       CN2    9-pin serial port                         CN4
  block)

                        CARRIER CONTROL

                Setting                   S1/1    S1/2   S1/3

          Carrier forced high             Off      On     Off

        Carrier activated by RTS          Off      On     On

        Carrier activated by DTR           On     Off     Off

     Carrier activated by DTR & RTS        On     Off     On

                     CLEAR TO SEND CONTROL

                Setting                   S1/4    S1/5   S1/6

         CTS controlled by RTS             On     Off     Off

            CTS forced high               Off      On     Off

            CTS follows DCD               Off     Off     On

                             DIAGNOSTIC LED(S)

   LED        Color         Status                  Condition

   PWR     Unidentified       On                   Power is on

   PWR     Unidentified       Off                 Power is off

   RD      Unidentified       On             Modem is receiving data

   RD      Unidentified       Off          Modem is not receiving data

   TD      Unidentified       On           Modem is transmitting data

   TD      Unidentified       Off        Modem is not transmitting data

   RTS     Unidentified       On               RTS signal is high

   RTS     Unidentified       Off               RTS signal is low

   DCD     Unidentified       On              Data carrier present

   DCD     Unidentified       Off           Data carrier not present.
                                           Connection not established