Multiplex communications – Pathfinding or routing – Combined circuit switching and packet switching
Reexamination Certificate
2003-08-27
2008-10-28
Nguyen, Quynh H (Department: 2614)
Multiplex communications
Pathfinding or routing
Combined circuit switching and packet switching
C370S353000, C370S354000, C370S355000, C370S356000, C370S357000, C370S358000
Reexamination Certificate
active
07443838
ABSTRACT:
A normal audio communication terminal can use the VoIP technology in a mobile communications system by using an audio communication circuit for a conventional wireless circuit, and adding an audio communications function to a packet communication device. In a PS (packet switching) network side forming a core network in the mobile communications system, the signaling of a CS (circuit switching) call with an RNC is designed to control a CS-UP (CS side user plane) by communications with the CPU of an SGSN, and the user data relating to a CS call is designed for communications with a PSTN (public switch telephone network) by way of an MGW through the CS-UP. Thus, an audio communication function can be added to a packet communication device, thereby realizing a VoIP function to a wireless circuit using an audio communications circuit.
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NEC Corporation
Nguyen Quynh H
Whitham Curtis Christofferson & Cook PC
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