Common protection architecture for optical network

Details Common protection architecture for optical network Common protection architecture for optical network

2007-12-25

2007-12-25

To, Doris H. (Department: 2616)

Multiplex communications

Fault recovery

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

C370S228000, C370S242000, C398S004000, C398S005000

Reexamination Certificate

active

11620905

ABSTRACT:
A communication network is arranged in a ring configuration of network elements (12) coupled by working spans (16) associated protection spans (18), with multiple rings sharing network elements (12aand12b). A shared protection span (18ab) is coupled between pairs of shared network elements (12aand12b). A matrix28in a shared network element (12aor12b) can couple any channel from one of the incoming working spans or protection spans to any channel of the shared protection span (18ab).

REFERENCES:
patent: 5870212 (1999-02-01), Nathan et al.
patent: 5884017 (1999-03-01), Fee
patent: 6414765 (2002-07-01), Li et al.
patent: 6735392 (2004-05-01), Elahmadi et al.

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