Virtual gateway node for dual-mode wireless phones
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United States of America Patent
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Apr 9, 2013
Grant Date -
Mar 22, 2012
app pub date -
Dec 1, 2011
filing date -
May 19, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
In one embodiment, a virtual gateway mediates between a dual-mode subscriber device and an IP-based PBX. In particular, the virtual gateway includes a WLAN interface for communicating with the dual-mode subscriber device and a network interface (wired or wireless) for communicating with the IP-based PBX over the Internet. As such, the virtual gateway may relay voice and call control instructions between the dual-mode subscriber device and the IP-based PBX, and may provide the same call control functions to the dual-mode subscriber device provided by the call control processor in existing dual-mode phones. The embodiment further provides a dual-mode subscriber device suitable for operation with the virtual gateway. Because the dual-mode subscriber device does not require a call control processor, the battery life and cost of the device are significantly improved.
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