Handoff for cellular and internet protocol telephony
AssigneeBridgeport Networks, Inc.
InventorsMichael T. Wilhoite, Inderdeep Singh, Steven H. Blumenthal
Life of this patent
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Abstract
A telephone system supports communication with user devices over both a cellular radio network as well as over an Internet Protocol (IP) network, and enables roaming and active call handoff between cellular and IP domains. Components of the system interact with conventional cellular telephone systems, for example, by emulating behavior of control components, providing proxy services for conventional components, transporting cellular telephone control communication over IP connections, or by simulating cellular operating characteristics of user devices operating in an IP domain.
Claims5
A telecommunication device comprising:
- an interface to a data network;
- an interface to a telephone system;
- wherein the telecommunication device is configured to communicate with a mobile unit over the interface to the data network, and to simulate, over the interface to the telephone system, presence of the mobile unit on a radio network associated with the telephone system by outputting one or more spoofed signal values that exceed corresponding signal values of the radio network;
- and
- wherein the telecommunication device is further configured to receive, in response to the one or more spoofed signal values, an indication that the mobile unit is granted registration with the data network.
Dependencies are inferred from the claim text.