Patent ID: 6351464
Filing Date: 2002-02-26
Classification: H04L,H04M,Y10S

Abstract:
A method communicating a voice call from a caller on a PSTN network to a called party utilizing a data device that is connected to a data network at an IP address indicating a location of said data device on said data network comprising the steps of:registering said data device with a gatekeeper that stores said IP address in association with an alias assigned to said called party while said data device is connected to said data network; dialing a PSTN number that is assigned to said called party; routing said voice call to a sequence of destinations assigned to said called party such that at least one of said destinations in said sequence corresponds to said alias; connecting said voice call to a gateway that transmits said voice call over said data network to said called party on said data device at said IP address; and registering said data device with the gatekeeper, the gatekeeper storing a second IP address in association with the alias, the second IP address indicating a second location of the data device on said data network, wherein the gatekeeper stores only one IP address in association with the alias at any given time.