Survivable ring network

Details Survivable ring network Survivable ring network

1988-02-04

1989-05-30

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 88, H04J 116, H04J 314

Patent

active

048357634

ABSTRACT:
A survivable ring network is disclosed that can withstand a cut link or failed node, without the need for a central controller or protection switching among links. The disclosed invention comprises two rings carrying identical multiplexed node-to-node communications in opposite directions. When a system error is detected in a downstream node, error signals are inserted in all subrate channels. Each subrate channel receiver receives identical communications from each ring. If one subrate channel has an error signal, the receiver selects the alternate channel.

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