Optical communications – Fault recovery – Bypass inoperative element
Reexamination Certificate
2006-08-29
2006-08-29
Phan, Hanh (Department: 2613)
Optical communications
Fault recovery
Bypass inoperative element
C398S002000, C398S003000, C398S004000, C398S010000, C398S017000, C398S022000, C398S030000, C398S033000, C398S045000, C398S079000, C398S135000, C398S139000, C398S141000, C398S023000, C398S140000, C370S216000, C370S217000, C370S218000, C370S219000, C370S220000, C370S221000, C370S227000, C370S228000
Reexamination Certificate
active
07099578
ABSTRACT:
A communication network includes first and second terminals, nodes, and links. The first node is coupled to the first terminal through the first link, and coupled to the second terminal through the second link and the second node. The first node preferably includes communication paths, each coupled to one corresponding first link and to the second link, through a multiplexing device, and routing signals between the links. The first node also preferably includes an alternate communication path coupled through the multiplexing device to the second link, a switch coupled to the alternate path, and a detector detecting failure of a communication path. A controller is responsive to the detector detecting a failure in a communication path and controls the switch to couple the alternate path to a corresponding first link, thereby enabling a signal to be routed between that first and second links through the alternate path.
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Fitzpatrick ,Cella, Harper & Scinto
Phan Hanh
Tellabs Operations Inc.
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