IP gateway for hybrid circuit switched and IP based mobile wireless telephone system
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United States of America Patent
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N/A
Issued Date -
Dec 2, 2004
app pub date -
May 27, 2003
filing date -
May 27, 2003
priority date (Note) -
Abandoned
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Abstract
An IP telephony gateway operates in conjunction with a base station of a hybrid micro cellular wireless telephone network. The base station supports roaming of a wireless telephone into a cell controlled by the base station. The IP telephony gateway comprises: i) a circuit switched network interface for exchanging system messaging, call signaling, and audio media with a circuit switched system controller; ii) a base station network interface for exchanging system messaging, call signaling, and audio media with a base station; and iii) a VoIP client for exchanging system messaging, call signaling and audio media with a remote VoIP device over a packet switched network. A management module interfaces messages exchanged with the base station and each of the circuit switched system controller and the soft switch to support roaming of the wireless telephone into the cell controlled by the base station.
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