Apparatus and method for preventing communications circuit misco

Details Apparatus and method for preventing communications circuit misco Apparatus and method for preventing communications circuit misco

1992-03-26

1995-08-15

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

340827, H04J 106

Patent

active

054426200

ABSTRACT:
Misconnections between communications circuits in a bidirectional line-switched ring transmission system are essentially eliminated by deterministically squelching in adjacent ring nodes, i.e., loop-back-switching nodes, communications circuits terminated in failed ring nodes in the ring transmission system. The deterministic squelching is realized by provisioning the ring nodes with all active communications circuits including those passing through the node which are terminated in other ring nodes in the bidirectional line-switched ring transmission system. Then, when one or more adjacent ring nodes fail, all active communications circuits terminated in those failed ring nodes are squelched in the adjacent ring nodes, i.e., in the loop-back-switching ring nodes.

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"SONET Rings: Proposal for K Byte Definition", Contribution to T1 Standards Project-T1X1.5, Nov. 5, 1990, G. Copley et al.

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