Patent ID: 7082137

Claim:
A method of re-routing a path installed in a transoceanic Multiplex Section Shared Protection Ring network in the event of a first failure on a first span of said path, said network comprising network elements connected in a ring configuration by fiber spans, said fiber spans comprising high priority channels and low priority channels, said method comprising: performing a ring switch action by a Multiplex Section Shared Protection mechanism; providing said ring with a Time Slot Interchange mechanism; and re-routing the path over a time slot of the low-priority channels corresponding to a time slot of the high-priority channels of the first span having the first failure; and wherein a second span of the path becomes affected by a second failure, further comprising: releasing the re-routing performed because of the first failure on the first span; selecting one of the first and second spans; and re-routing the path over a time slot of the low priority channels corresponding to a time slot of the high priority channels of the first or second span that has been selected.