Method and apparatus for rapidly restoring a communication netwo

Details Method and apparatus for rapidly restoring a communication netwo Method and apparatus for rapidly restoring a communication netwo

1990-10-26

1992-09-08

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 13, 370 851, 370 941, 371 81, 371 111, 371 112, 379 2, 379221, 379273, 379274, H04J 314

Patent

active

051464527

ABSTRACT:
The present invention provides an approach to reconnect a communications network such as a DS3 telephone-type network when a span of DS3 channels is rendered inoperative, such as by cutting, within the 1.5 second time frame necessary to prevent disablement of local offices. This is accomplished by preplanning a restoration connection for each possible operating link failure in each span using spare capacity. A dedicated (DS3) communication loop is used to inform all nodes in the network substantially simultaneously to implement their portion of a plan associated with the failed span. After the restoration occurs for a given failed span, the concept can be extended to start planning for further failures or can be designed to restore further failures on a real time basis.

REFERENCES:
patent: 4284852 (1981-08-01), Szybicki et al.
patent: 4853927 (1989-08-01), Wenzel
patent: 5029158 (1991-07-01), Reid et al.
patent: 5031093 (1991-07-01), Hasewaga
patent: 5058105 (1991-10-01), Mansour et al.

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