A media stream processing of VoIP media gateway

Author

Yoo, Hyun-Kyung ; Kang, Byung-Ryong

Author_Institution

Network Eng. Technol. Team, Electron. & Telecommun. Res. Inst., Daejeon, South Korea

Volume

1

fYear

2003

fDate

21-24 Sept. 2003

Firstpage

91

Abstract

The converged network consisted of PSTN, IP, 2G and 3G-mobile will allow many different communications systems to interoperates so that users will be able to share data and voice services. One of the key elements is the media gateway, which provides conversion of streamed media formats such as voice and manages the transfer of information between the different networks. The VoIP media gateway supports transcodec that converts between speech codecs of each network and can improve the speech quality of intercommunication among different networks. Our VoIP media gateway adopted direct network interface to eliminate bottlenecks between host processor and DSPs and need not use packet processor because DSP is in charge of network interface. This paper described the architecture of converged network applied to VoIP media gateway, the architecture and the functions of media gateway and the DSP´s media processing scheme.

Keywords

3G mobile communication; IP networks; Internet telephony; digital signal processing chips; internetworking; speech codecs; 2G mobile network; 3G-mobile network; DSP chip; IP network; PSTN; VoIP media gateway; converged network; direct network interface; media stream processing; speech codecs; speech quality; transcodec; Control systems; Digital signal processing; IP networks; Internet telephony; Network interfaces; Protocols; Resource management; Speech codecs; Streaming media; Time division multiplexing;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2003. APCC 2003. The 9th Asia-Pacific Conference on

Print_ISBN

0-7803-8114-9

Type

conf

DOI

10.1109/APCC.2003.1274318

Filename

1274318