Patent ID: 8428032

Claim:
A method for selectively establishing a voice call continuity link between a mobile device and a voice call continuity application server, comprising: receiving a request to establish a voice over IP call connection at the voice call continuity application server from the mobile device, the request including mobile device location information for the mobile device; determining at the voice call continuity server a position of the mobile device with respect to at least one network defined by network location information that can support the voice over IP call if the voice over IP call is dropped by an IP network responsive to the mobile device location information; determining at the voice call continuity application server whether the voice call continuity link is needed between the voice call continuity server and the mobile device responsive to the determined position of the mobile device with respect to the at least one network; establishing the voice call continuity link between the mobile device and the voice call continuity application responsive to a determination that the voice call continuity link is needed; and establishing a voice over IP call connection without the voice call continuity link responsive to a determination that the voice call continuity link is not needed.