A Scalable Distributed VoIP Conferencing Using SIP

Prasad, RV and Hurni, R and Jamadagni, HS (2003) A Scalable Distributed VoIP Conferencing Using SIP. In: ISCC 2003 - International Symposium on Computers and Communications, 30 June-3 July 2003, Kemer-Antalya, Turkey, pp. 608-13.

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Abstract

Session Initiation Protocol seems to be the preferred standard for Voice over IP. In this paper, we consider the limitations of existing SIP conferencing methods and propose a distributed architecture using Controllers (SIP Proxy Servers) and Conference Servers which facilitates the control and media handling of a VoIP conference. The Conference Servers are designed on the basis of H.323’s Multipoint Processors and handle the audio part of the conference. We provide conferencing messages on SIP that bring these Controllers and Conference Servers together along with the Clients for scalable conference on the Internet. The schematic of the Proxy Server and Conference Server is presented to aid in implementation. We also explain the mechanism we use to improve the quality of mixed output speech by selecting the streams at the Clients.

Item Type:	Conference Paper
Publisher:	IEEE Computer Society
Additional Information:	2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE
Department/Centre:	Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited:	09 Jul 2007
Last Modified:	19 Sep 2010 04:36
URI:	http://eprints.iisc.ac.in/id/eprint/10138

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