WESTERMO TELEINDUSTRI AB

MA-12

Card Type                   Modem
Chip Set                    Unidentified
I/O Options                 AC power, 25-pin serial port, network interface
                            via terminal block
Data Modulation Protocol    ITU-T V.24/V.28
Wiring Type                 Unshielded twisted pair
Maximum Data Rate           38.4Kbps
Data Bus                    External

[Image]

                                            CONNECTIONS

           Function                   Label                        Function                  Label

  AC power                       CN1    25-pin serial port                        CN3

  UTP interface (terminal        CN2
  block)

                       USER CONFIGURABLE SETTINGS

                     Setting                        Label      Position

  115V AC enabled                                     S2          On

  230V AC enabled                                     S2         Off

                              CARRIER CONTROL

         Setting           S1/1    S1/2    S1/3     S1/4    S1/5    S1/6

   Carrier forced high     Off      On      Off     Off      Off     Off

   Carrier activated by    Off      On      On      Off      Off     Off
           AUX

   Carrier activated by    Off      On      Off      On      Off     Off
           SRS

   Carrier activated by    Off      On      Off     Off      On      Off
           RFR

   Carrier activated by    Off      On      Off     Off      Off     On
           RTS

   Carrier activated by     On      Off     Off     Off      Off     Off
           DTR

   Carrier activated by     On      Off     On      Off      Off     Off
       DTR and AUX

   Carrier activated by     On      Off     Off      On      Off     Off
       DTR and SRS

   Carrier activated by     On      Off     Off     Off      On      Off
       DTR and RFR

   Carrier activated by     On      Off     Off     Off      Off     On
       DTR and RTS

                     CLEAR TO SEND CONTROL

                Setting                   S1/7    S1/8   S1/9

         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