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Telecommunications network restoration architecture

  • US 5,182,744 A
  • Filed: 01/03/1991
  • Issued: 01/26/1993
  • Est. Priority Date: 01/03/1991
  • Status: Expired due to Term
First Claim
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1. A service restoration system for use in a communications network formed from a plurality of nodes interconnected by a plurality of transmission links, said system comprisingmeans, contained in individual ones of said nodes, for polling associated ones of said nodes and links for alarms indicative of at least a disruption in the flow of traffic, and, responsive to receiving from a particular one of said associated nodes and links at a rate which equals a predetermined threshold one of said alarms, for outputting to one of a number of communications paths a message at least identifying said traffic disruption and its location,central control means operative, responsive to receipt of said message via said one communications path, for locating spare capacity contained in individual other ones of said links, and for dynamically establishing from said spare capacity a number of orders of connectivity to route said disrupted traffic around said particular one of said associated nodes or links which generated said one alarm condition, andmeans, responsive to receipt from said central control means via one of said communications paths a message requesting a continuity test of a particular one of said orders of connectivity, for monitoring said particular one of said associated ones of said nodes and links which generated said one alarm condition to verify said disruption, and for then testing for continuity said one order of connectivity so that either a portion or all of said disrupted traffic may be transferred thereto.

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