Extending SONET/SDH automatic protection switching

Details Extending SONET/SDH automatic protection switching Extending SONET/SDH automatic protection switching

2005-02-15

2009-08-04

Trost, IV, William (Department: 2416)

Multiplex communications

Fault recovery

Bypass an inoperative switch or inoperative element of a...

C370S227000

Reexamination Certificate

active

07570583

ABSTRACT:
The invention provides a method and system for coupling a SONET/SDH network to a routing network that does not have a single point of failure. Multiple routers are coupled between the SONET/SDH network and the routing network, one for each data path; for example, a first router for the working data path and a second router for the protection data path. The routers intercommunicate to force APS to switch data paths bidirectionally, so as to allow only a single router for each data path.

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