Patent ID: 7990926

Claim:
A system for call control between a mobile network and a wireless network comprising: means for establishing, with the mobile network, a control messaging link for exchanging control signal channel signaling data and a voice channel link for exchanging audio data for a mobile call; means for sending a signal strength indicator to the mobile network thereby causing the mobile network to recognize the gateway system as a valid path for handing off the mobile call responsive to a mobile device associated with the mobile call informing the gateway system that the mobile device will begin transmitting communication signals at reduced power to produce weakened signals to trigger the handing off of the mobile call, wherein the signal strength indicator has a predetermined value representing a higher signal strength signal sufficient to cause the mobile network to route the mobile call to the gateway; means for establishing a communications link with a packet-switched network; and means for routing the mobile call from the mobile network to a wireless access point via the packet-switched network, such that the mobile call is conducted via a wireless communications link using the wireless access point.