Patent ID: 7742498

Claim:
A method for routing a call to a dual mode wireless device that communicates over one of a cellular network and a packet-based network, the method comprising the steps of: receiving said call at a network node; selecting one of a plurality of networks for use in connecting said call to said dual mode wireless device; routing said call to said dual mode wireless device via said selected network; and handing-off said call to said dual mode wireless device via another of said plurality of networks during said call, said handing-off based on: a) a cost analysis including a comparison of a cost associated with said call on said another of said plurality of networks relative to a cost associated with said call on said one of said plurality of networks, the cost analysis being performed by the network node, b) a data security preference, and c) a capacity of each of the plurality of networks, said capacity based on information in a database and communication between the network node and the plurality of networks.