Gibson & Dernier LLP
System for switching over a voice call
A system and method for switching a voice call from an Instant Messaging (IM) based voice network to a cellular voice network. A telephone adapted to switch a voice call from an Instant Messaging (IM) based voice network to a cellular voice network.
TP Lab Inc.
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inventional inventional inventional
Shin Cheung Simon Chi Fai
Chiu Ho