Patent ID: 7031706
Filing Date: 2006-04-18
Classification: H04L,H04W

Abstract:
1. A method, comprising: providing information related to an Internet Protocol (IP) Multi-Media (IM) Subsystem (IMS) to a mobile terminal; storing the information into a memory that is readable by the mobile terminal, and reading the stored information from the memory, where an Activate PDP Context Request message is sent from the mobile terminal to a Serving GPRS Support Node (SGSN) and comprises a special identifier that signals an IMS query by the mobile terminal; and when activating a PDP context, the SGSN includes a parameter P in place of a PDP address in an Activate PDP Context Accept message when responding to the Activate PDP Context Request message, where the value of P indicates the availability or the nonavailability of IMS to the mobile terminal.