Patent ID: 7379449
Filing Date: 2008-05-27
Classification: H04M

Abstract:
1. A method of supporting abbreviated dialing between phones, the method comprising: determining dialing by a first phone of an abbreviated number associated with a second phone, wherein the phones are affiliated with one another by being associated with a customer of a service provider, wherein the first phone is in a circuit-switched network associated with a Centrex system of the service provider and the second phone is in an Internet Protocol (IP) packet-switched network disassociated from the Centrex system, wherein affiliated phones in the circuit-switched network are associated with the Centrex system, wherein the Centrex system supports abbreviated dialing between phones associated with the Centrex system; and determining a routing number for a phone call from the first phone to the second phone as a function of the abbreviated number, the routing number including IP addressing sufficient to support routing of the phone call through the packet-switched network to the second phone such as if both phones were associated with the Centrex system.