Loop-back in dual ring network

Details Loop-back in dual ring network Loop-back in dual ring network

H - Electricity

04

J

H04J 3/14 (2006.01) H04L 12/437 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2063936

This invention aims at making a loop-back recovery when a failure takes place in a ring network for transmitting information to a path indicated with a path ID number or. the time slot position from a periodic frame. This is achieved by establishing working paths on one of the dual ring line between a transmission node and a receiving node thereof, establishing ring-formed protection paths in a ring line of the direction opposite to the working line, and a loop-back is made from the working paths to the corresponding protection paths at a node which detected the failure.

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