Research and Implementation of SIP-Based Video Conference System
Based on the analysis of SIP protocol, and combined with the features of video conference, it has improved SIP video conferencing system and isolated conference management of system, SIP signaling control and audio/video processing module to make the syst
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Research and Implementation of SIP-Based Video Conference System Yujiao Wang, Haiyun Lin, and WanJun Yang
Abstract Based on the analysis of SIP protocol, and combined with the features of video conference, it has improved SIP video conferencing system and isolated conference management of system, SIP signaling control and audio/video processing module to make the system easy to configure, manage and expand, and benefit the development of function about system entity independently and development of reusability about the bottom function. Keywords SIP protocol • Video conference • Conference framework • Realization of conference
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The Standard of Signaling Technology About Video Conference System
Video conference is a space virtual environment which provides comprehensive perception which contains video, audio, text, and images etc., which provide a discussing environment as a face-to-face scene to multiply users in different places to make people participate in the interactive activities with each other at extremely far distance at home. The unceasing development and perfect of signaling technology is the strong force which pushes the application of audio conference system. At present, signaling technology about audio conference system is realized based on the H.323 protocol which is presented by the ITU-T. Although the protocol is more mature, the realization of it is complicated and the cost of its development
Y. Wang (*) • H. Lin Department of Physical Science and Technology, Kunming University, Kunming, China e-mail: [email protected]; [email protected] W. Yang Basic Medical College, Kunming Medical University, China e-mail: [email protected] S. Zhong (ed.), Proceedings of the 2012 International Conference on Cybernetics 1889 and Informatics, Lecture Notes in Electrical Engineering 163, DOI 10.1007/978-1-4614-3872-4_242, # Springer Science+Business Media New York 2013
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is very high, so it is difficult to be expanded, and the flexibility of application is not enough. The SIP protocol which is formulated by IETF is widely used in the multimedia communication because it is concise, flexible, and easy to expand and implement. Therefore, it not only realize the every function of 323 protocol conveniently, and but also very cheaper, so there are some theoretical and practical significances to the study about SIP conference framework.
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SIP Protocol SIP Protocol Messages
SIP protocol is the control (signaling) protocol, which is used for initiating, adjusting and ending the multimedia conversation with multiply participants (of the user data exchange), including IP telephone, multimedia publishing, multimedia conference, remote education and network interactive games, etc. SIP protocol is used through combined with the other parts of multimedia communication protocol system to provide more business to users [1]. The other common agreements include RTP (real-time transfer protocol), RTSP (real-time flow protocol), and the SDP (conversation description protocol). However, the bas
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