Patent ID: 9178720
Filing Date: 2015-11-03
Classification: H04L,H04M

Abstract:
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.