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Intelligent network with alternate routing of signalling messages, and method of operating such network

  • US 6,137,806 A
  • Filed: 12/22/1997
  • Issued: 10/24/2000
  • Est. Priority Date: 12/22/1997
  • Status: Expired due to Fees
First Claim
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1. A telecommunications network comprising a plurality of switching units equipped with SS7 messaging capabilities, at least one Service Processor, and a Network Signalling Point interposed between the switching units and the Service Processor and interconnected thereto by SS7 messaging links, the Network Signalling Point (NSP) having:

  • (i) message transfer means for routing signalling messages between the switching units and the service processor according to point codes in such messages, storing a copy of each signalling message transmitted to said service processor, each copy message with an identifier specific to an originating call, and receiving from said service processor response signalling messages having corresponding identifiers;

    (ii) means for monitoring the message transfer means and timing, a predetermined time interval commencing when a signalling message with a particular identifier is transmitted thereby and, if a response signalling message having an identifier corresponding to said particular identifier is detected within said predetermined time interval, causing said message transfer means to delete the stored copy message, butif no corresponding response signalling message with an identifier corresponding to said particular identifier is received within said predetermined time interval, causing said message transfer means to retrieve the stored copy of the message, change the destination point code to that of an alternative service processor, and route the changed message to that alternative service processor.

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