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
Table
TPIM | Media Type | Connector |
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Shielded Twisted Pair | DB9 | |
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Unshielded Twisted Pair | RJ45 | |
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Shielded Twisted Pair | RJ45 | |
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Multimode Fiber Optic | ST | |
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Single mode Fiber Optic | ST | |
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The LNK (Link) LED on the face of each TPIM indicates the following:
•Green - Inserting.
•Red
•Off - No Link (Wrapped or Disabled)
All Cabletron TPIMs are interchangeable and
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.
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