標題: vGPRS: A mechanism for voice over GPRS
作者: Chang, MF
Lin, YB
Pang, AC
資訊科學與工程研究所
Institute of Computer Science and Engineering
關鍵字: gatekeeper;GGSN;GPRS;SGSN;VoIP
公開日期: 2003
摘要: This paper proposes vGPRS, a voice over IP (VoIP) mechanism for general packet radio service (GPRS) network. In this approach, a new network element called VoIP mobile switching center (VMSC) is introduced to replace standard GSM MSC. Both standard GSM and GPRS mobile stations can be used to receive real-time VoIP service, which need not be equipped with the VoIP (i.e., H.323) terminal capabilities. The vGPRS approach is implemented using standard H.323, GPRS, and GSM protocols. Thus, existing GPRS and H.323 network elements are not modified. Furthermore, the message flows for vGPRS registration, call origination, call release and call termination procedures are described to show the feasibility of our vGPRS system.
URI: http://hdl.handle.net/11536/28263
http://dx.doi.org/10.1023/A:1021893616785
ISSN: 1022-0038
DOI: 10.1023/A:1021893616785
期刊: WIRELESS NETWORKS
Volume: 9
Issue: 2
起始頁: 157
結束頁: 164
Appears in Collections:Articles


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