Optimization of connection paths in a communications network

Details Optimization of connection paths in a communications network Optimization of connection paths in a communications network

H - Electricity

04

L

H04L 12/24 (2006.01) H04M 7/00 (2006.01)

Patent

CA 2307734

A method for optimizing an established call routed across a network from an originating exchange to a destination exchange over a first connection path. The first connection path features a path metric of interest, such as administrative weight. A second connection path is identified which features an improved path metric, the path is made operative and the call is directed over the second connection path. Thereafter, the first connection path may be dismantled. The second connection path is preferably identified by signalling a call set-up message over the network, wherein the message incorporates a reporting field and each transiting exchange propagating the message updates the reporting field until it specifies the path metric of the replacement connection path traversed by the call set-up message. A connect message incorporating the reporting field back is signalled back to the originating exchange from the destination exchange. If the reporting field specifies an improved path metric the replacement connection path is then identified; otherwise the process may be repeated until such time as the second path is found. Alternatively, if the call set-up message includes a desired connection path metric value and the network is configured to clear back the call set-up message to the originating exchange in the event it is unable to identify any connection path to the destination exchange satisfying the desired path metric, the replacement connection path may be automatically accepted.

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