APPENDIX A

TPIM Specifications

A.1 Overview

Token Ring Port Interface Modules (TPIMs) are media adapter cards which extend network connections onto a variety of media. When installed into Ring In and Ring Out ports, TPIMs support the expansion of a Token Ring from the host module into other devices. Each TPIM has a different type of cable port to support a different media connection. Table A-1 lists each available Cabletron Systems TPIM and its respective connector.

Table A-1. TPIMs and their Corresponding Media

TPIM

Media Type

Connector

 

 

 

 

 

 

TPIM-T1

Shielded Twisted Pair

DB9

 

 

 

TPIM-T2

Unshielded Twisted Pair

RJ45

 

 

 

TPIM-T4

Shielded Twisted Pair

RJ45

 

 

 

TPIM-F2

Multimode Fiber Optic

ST

 

 

 

TPIM-F3

Single mode Fiber Optic

ST

 

 

 

The LNK (Link) LED on the face of each TPIM indicates the following:

Green - Inserting.

Red (TPIM-T1/T2/T4 only) - No Link (Autowrapped)

Off - No Link (Wrapped or Disabled)

All Cabletron TPIMs are interchangeable and hot-swappable.

A.2 Twisted Pair TPIM Pinouts

Each TPIM that supports Twisted Pair cabling has two operating modes: Ring In / Ring Out and Station. For use with STHI, the TPIM is switched to operate in Ring In/ Ring Out mode. The pinouts for TPIMs in station applications are different from pinouts for Ring In / Ring Out applications. Illustrations of the Ring In / Ring Out pinouts follow.

Page A-1

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Image 68
Cabletron Systems STHI manual Overview, Twisted Pair Tpim Pinouts