Patent ID: 6782268
Filing Date: 2004-08-24
Classification: H04M,H04Q,H04W

Abstract:
A method for tracking call history information in a switching system of a communications network, said method comprising the steps of:storing, in a network node of a communications network, call history information for a plurality of communication devices having line ports, the call history information being only associated with a subscriber, wherein said call history information includes at least one of the following: a subscriber identification, a last incoming calling dialed number, and a last outgoing called dialed number; automatically tracking said call history information associated only with the subscriber by said network node based on at least one originating trigger and at least one terminating trigger; and in response to registration of a communication device of the plurality of communication devices at the switching system, transmitting at least some of the call history information associated only with the subscriber from the network node to any switching system among a plurality of switching systems; wherein the network node tracks a call history of the subscriber without regard to the line ports, thereby allowing the subscriber to maintain a common level of services at switching systems in the plurality of switching systems and making the line ports previsously used by the subscriber available to other subscribers.