Optical inter-ring protection having matched nodes

Details Optical inter-ring protection having matched nodes Optical inter-ring protection having matched nodes

H - Electricity

04

L

H04L 12/437 (2006.01) H04B 10/20 (2006.01) H04B 10/24 (2006.01) H04J 3/08 (2006.01) H04L 12/46 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2311399

The matched nodes provide protection for a failure in the connection between two bidirectional line switched rings. They use a secondary path in case of a primary path failure. The secondary path is set aside in either the working or protection bandwidth of the rings, thus wasting resources. The invention uses inter-ring protection mechanisms which do away with a specifically set aside secondary path between the primary and secondary nodes.

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