SIP P2P Multipoint Audio ConferencingDesign and Implementation

• Main Authors: Ting-Kuan Yu, 余丁坤
• Other Authors: Hsiao-kuang Wu
• Format: Others
• Language: en_US
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/79624984803752862535

碩士 === 國立中央大學 === 資訊工程學系碩士在職專班 === 92 === Internet conferencing is a program for conference on Internet. Most SIP Internet conferencing use centralized conference server model, and some ones use end user mixing model for signaling. Respect to the above two models, mesh model has difference advantages. Every peer in mesh has the same capability to initial a conference session in dynamic without a conference server or a bridging endpoint. Besides, SIP supports mobility, the combination of mesh conference model and SIP is a suitable method to implement Internet conferencing for mobile handset devices. MSIP had proposed a method, which creates a mesh topology SIP signaling, for Internet conferencing. Besides, this method will be presented on PIMRC 2004. This thesis is initialed for improving and implementing MSIP. In this thesis, MSIP is analyzed and improved to support simultaneously creating multiple conference sessions. We call the improved method SPPMC. The improvements of MSIP, detail design of SPPMC, and system architecture for implementation are all listed in design sections and implementation section. A conferencing program, named SMC-Media, with multicast PCM audio stream is implemented. The snapshots of the program demonstrated for conference establishment scenario, and conference joining scenario, and the result of some measurements, including network bandwidth consuming and conference forming Time with TCP and UDP underling transport are described in demonstration section.