Switching method for bidirectional line switched ring and...

Details Switching method for bidirectional line switched ring and... Switching method for bidirectional line switched ring and...

2005-04-12

2005-04-12

Pham, Chi (Department: 2663)

Multiplex communications

Fault recovery

Bypass an inoperative station

Reexamination Certificate

active

06879558

ABSTRACT:
A switching method in a bidirectional line switched ring includes the steps of performing span switch by one node of the ring for getting rid of a fault detected by the one node, changing the span switch into ring switch when the span switch could not be performed normally, and performing the ring switch, and holding the ring switch request as an internal request of the one node when a span switch request, higher in priority than the ring switch, generated in another node is received by the one node.

REFERENCES:
patent: 6269452 (2001-07-01), Daruwalla et al.
patent: 6616350 (2003-09-01), de Boer et al.
patent: 6-268659 (1994-09-01), None

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