Patent ID: 8249016
Filing Date: 2012-08-21
Classification: H04W

Abstract:
1. A method for providing handoff configuration information to a dual mode access terminal (AT), the handoff configuration information being for use in a call handoff of the dual mode AT between a circuit switched (CS) network and an Internet Protocol (IP) Multimedia Subsystem (IMS) network, the IMS network including an IMS server to handle registrations of ATs with the IMS network, the method comprising: receiving a registration request from the dual mode AT at the IMS server upon the AT association with the IMS network; and providing a response message including handoff configuration information from the IMS to the dual mode AT in response to the registration request, wherein the handoff configuration information includes a Hand Off (HO) Number used for handoff from the IMS network to the CS network and a Hand Off Uniform Resource Identifier (HO URI) used for handoff from the CS network to the IMS network.