Description

This article is from the Token Ring FAQ, by James Messer James@NetworkUptime.com with numerous contributions by others.

4.3] What pin assignments are used in token ring cabling?

An IBM-type Data Connector or Universal Data Connector (IDC or UDC),
is a hermaphroditic connector (neither male nor female). These
connectors attach to each other without having a specified male or
female connector type on each end. These connectors are commonly
found on IBM Type 1 cabling, a two-pair shielded cable.

The UDC connector has the following cabling requirements:

       Red    - Receive +
       Green  - Receive -
       Orange - Transmit +
       Black  - Transmit -

A DB-9 connector uses four wires (two pairs) for token ring
networking:

Pin 1 - Red    - Receive +
       Pin 5 - Black  - Transmit -
       Pin 6 - Green  - Receive -
       Pin 9 - Orange - Transmit +

A RJ-45 connector is an eight wire twisted pair cable:

       Pin 3 - Blue/White   - Transmit -
       Pin 4 - White/Orange - Receive +
       Pin 5 - Orange/White - Receive -
       Pin 6 - White/Blue   - Transmit +

RJ-11 connectors are rarely used:

       Pin 2 - Blue/White   - Transmit -
       Pin 3 - White/Orange - Receive +
       Pin 4 - Orange/White - Receive -
       Pin 5 - White/Blue   - Transmit +

 

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• prev: 4.2] What types of cables are used for token ring?
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