Method for establishing a communication on a standby link in...

Details Method for establishing a communication on a standby link in... Method for establishing a communication on a standby link in...

2005-01-04

2005-01-04

Phan, Hanh (Department: 2633)

Optical communications

Fault recovery

Bypass inoperative element

C398S015000, C398S023000, C398S030000, C398S038000, C398S013000, C398S016000, C398S022000, C398S033000, C370S220000, C370S217000, C370S225000, C370S226000, C370S227000, C375S228000, C375S260000, C375S257000, C340S870030, C340S870030, 37

Reexamination Certificate

active

06839515

ABSTRACT:
A method for standby switching in optical transmission devices is provided, wherein, in addition to a working signal and a protection signal, respective control signals with information concerning the allocation state are transmitted and evaluated at the receiving end. The control signals are transmitted via a monitoring channel even when the useful signal is switched off.

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Hamel et al., “First results of an experimental Coloured Section Ring”, 22ndEuropean Conference on Optical Communication—ECOC '96, Oslo, pp. 3.51-3.54.
Japanese Abstract, Publication No. 60160734, Publication Date Aug. 22, 1985.
Japanese Abstract, Publication No. 61232734, Publication Date Oct. 17, 1986.

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