Optical communications – Diagnostic testing – Fault detection
Reexamination Certificate
2006-07-11
2006-07-11
Pascal, Leslie (Department: 2633)
Optical communications
Diagnostic testing
Fault detection
C398S059000, C398S083000
Reexamination Certificate
active
07076163
ABSTRACT:
The method and system for testing during operation of an open ring network includes opening a ring of the network at the node. Traffic circulating on the ring is dropped in the node to a monitoring element prior to or at the opening of the ring in the node. At the monitoring element, a signal received from the ring is tested. During tested and while the ring is open, traffic continues to be communicated between each node on at least one of the ring or a second ring each connecting the nodes of the network.
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Kinoshita Susumu
Odate Satoru
Takeguchi Koji
Tian Cechan
Fujitsu Limited
Pascal Leslie
Wang Quan-Zhen
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