Apparatus and method for providing VoIP service based on IP...

Details Apparatus and method for providing VoIP service based on IP... Apparatus and method for providing VoIP service based on IP...

2006-07-14

2010-11-23

Tsang, Fan (Department: 2614)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C455S445000, C455S041200

Reexamination Certificate

active

07839841

ABSTRACT:
Provided are an apparatus and method for providing VoIP service based on an IP multimedia subsystem (IMS). When a MS is located indoors, it accesses the IMS through a VoIP gateway. When the MS is located outdoors, it accesses the IMS through an IEEE 802.16 system. Therefore, the VoIP service can be provided over one telephone number allocated to the MS.

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