Patent ID: 6363253
Filing Date: 2002-03-26
Classification: H04L,H04W

Abstract:
A telecommunications system for reducing the call setup time for re-establishing a new call based upon a previous call between two subscribers, at least one of which is located within an internet protocol based cellular network, comprising:a mobile station within said internet protocol based cellular network having a memory therein for storing a call cache identifier associated with a called party number, said mobile station transmitting said call cache identifier along with a call setup message to re-establish said new call to said called party number; a call cache containing call data associated with said previous call between said mobile station and said called party number, said call cache having said call cache identifier associated therewith; and a mobile switching center within said internet protocol based cellular network in wireless communication with said mobile station, said mobile switching center receiving said call setup message and said call cache identifier and accessing said associated call cache to re-establish said new call using said call data associated with said previous call.