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Common routing

  • US 9,178,720 B2
  • Filed: 07/18/2013
  • Issued: 11/03/2015
  • Est. Priority Date: 02/12/2010
  • Status: Active Grant
First Claim
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1. A method for routing a call from a customer to a destination, the method comprising:

  • intercepting, at an application server, a call setup message sent from a customer switch to a switch intended to signal the switch to perform a call routing function, the call routing function determines a route for the switch to use to carry the call to the destination, the route so determined is a switch-determined route;

    in response to the call setup message being intercepted, querying a routing engine with the destination of the call for a specific route over which to carry the call to the destination, the specific route queried from a set of routes that is different from another set of routes from which the call routing function determines the switch-determined route;

    modifying the call setup message to include the specific route, the call setup message so modified is a modified call setup message; and

    directing the switch with the modified call setup message to use the specific route to carry the call from the customer to the destination;

    wherein the application server performs the method without needing a service transfer point

         1) to intercept the call setup message and

         2) to direct the switch with the modified call setup message.

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