Patent ID: 6954455
Filing Date: 2005-10-11
Classification: H04L,H04M,H04Q

Abstract:
1. A technique for handling subscriber calls in a communications network using a routing plan prescribed by the subscriber independent of the manner in which the calls originate and terminate, comprising the steps of: receiving in the network a call from a calling party dialed to a called party, launching a query to database containing routing plans to obtain a called party routing number for the called party in accordance with a subscriber routing plan that is independent of call origination and termination; mapping the called party routing number to a physical port in the network when the called party routing number corresponds to a circuit-switched call destination; or to a IP address when the called party routing number corresponds to a packet-based call destination; routing the call to the call destination in accordance with the mapping; determining if the routing the call in accordance with said mapping yields a busy trigger, and if so, then establishing an alternate call routing number destination by querying said database; and mapping the alternate called party routing number to a physical port in the network when the alternate called party routing number corresponds to a circuit-switched call destination; or to an IP address when the called party's routing number corresponds to a packet-based call destination; and routing the call to the call destination in accordance with the mapping.