
OSITECH COMMUNICATIONS, INC.

ETHERNETTALK LT990

NIC Type      Ethernet
Transfer Rate 10Mbps
Data Bus      Compaq portable bus
Topology      Linear Bus/Star
Wiring Type   Proprietary Unshielded Twisted Pair

              RG-58A/U 50ohm coaxial
Boot ROM      Not available

[Image]

                       CONNECTIONS

           Purpose                     Location

            RJ-12                         CN1

             BNC

  Note: See table below for RJ-12 pinout configuration.

  ETHERNET ADAPTER CABLE PINOUT

      RJ-12            RJ-45

        1               N/A

        2                2

        3                1

        4                3

        5                6

        6               N/A

       N/A               4

       N/A               5

       N/A               7

       N/A               8

                         DIAGNOSTIC LED(S)

    LED        Color      Status               Condition

    LED1        Red      Blinking      Data is being transmitted

    LED1        Red        Off       Data is not being transmitted

    LED2       Green        On           Polarity is reversed

    LED2       Green       Off            Polarity is normal

    LED3       Green     Blinking       Data is being received

    LED3       Green       Off        Data is not being received

    LED4        Red         On        Network connection is good

    LED4        Red        Off       Network connection is broken

