Optical cross-connect restoration technique

Details Optical cross-connect restoration technique Optical cross-connect restoration technique

H - Electricity

04

Q

H04Q 1/18 (2006.01) H04B 10/02 (2006.01) H04J 3/08 (2006.01) H04Q 11/00 (2006.01)

Patent

CA 2268406

An alarm and restoration system (28) accomplishes restoration in a ring network (10 1) by monitoring network traffic to detect the occurrence of a single failure arising from a failed optical service path (14i) and the occurrence of a double failure arising from a failed optical service path and an occupied optical protection path (16i). In case of a single failure, the alarm and restoration system (28) restores traffic in the network itself by routing traffic on a restoration path. In the event of a double failure, the alarm and restoration system (28) routes traffic from the failed ring network through an Optical Cross-Connect mesh (22) to transform the double failure into a single failure that can be restored in the network itself.

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