System and method for restoring a telecommunications network based on a two prong approach
AssigneeMCI Communications Corporation
InventorsChing-Hua Chow, Sami A. Syed, John D. Bicknell, Stephen C. McCaughey
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AssigneeMCI Communications Corporation
InventorsChing-Hua Chow, Sami A. Syed, John D. Bicknell, Stephen C. McCaughey
Estimating the term…
A fast distributed network restoration system and method therefor for restoring disrupted traffic, due to a cut link, in a digital cross-connect system (DCS) network utilizes a two-prong approach whereby both disrupted ends of the cut link simultaneously send out restore messages. To this end, upon detection of a cut link, the end nodes are respectively designated as a Gray Origin node and a Black Origin node. The Gray Origin node begins to broadcast Gray restoration request messages while the Black Origin node begins to broadcast Black restoration request messages to their respective neighbor nodes. As soon as an intermediate node receives one of the restoration request messages, depending on the color attribute of the message, that intermediate node is identified as either a Gray or Black node. Once a network node has received both Gray and Black restoration request messages, a restoration path is identified and that node begins to connect the spare channels of the links over which the request messages arrived. A system for effecting the method of the present invention is also disclosed.
A method of restoring traffic flow in a communications network after disruption of traffic at at least one of said network's links, comprising the steps of:
In a communications network, a method of effecting at least one new communication path to carry traffic disrupted by a break in a link of said network, comprising the steps of:
System for restoring service in a communications network after disruption of traffic flow at at least one of said network's links, comprising:
In a communications network, arrangement for effecting at least one new communication path to route traffic disrupted by a break in a link of said network, comprising:
Dependencies are inferred from the claim text.