Virtual ring configuration method and virtual ring system

Details Virtual ring configuration method and virtual ring system Virtual ring configuration method and virtual ring system

1996-05-29

1998-05-19

Kizou, Hassan

Multiplex communications

Fault recovery

Bypass an inoperative station

370228, 340827, H04L 1243

Patent

active

057545286

ABSTRACT:
In a virtual ring configuration method and a virtual ring system, a plurality of nodes are set on a plurality of rings and the rings are cross-connected. Each node has a transmitting unit and a receiving unit for sending and receiving service information between the nodes by the SONET path. A judging unit is provided for judging whether or not there is an input of obstruction information by the SONET path. A path protection switch is provided at a receive terminal, which switches the receive terminal which receives the SONET path in cases where the judging unit judges that obstruction information has been received.

REFERENCES:
patent: 5187706 (1993-02-01), Frankel et al.
patent: 5278824 (1994-01-01), Kremer
patent: 5315582 (1994-05-01), Morizono et al.
patent: 5327427 (1994-07-01), Sandesara
patent: 5394389 (1995-02-01), Kremer
patent: 5406549 (1995-04-01), Kremer
patent: 5446725 (1995-08-01), Ishiwatari

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