Distributed P2P-SIP Conference Construction

摘要

SIP-based Internet Telephony is an increasingly popular communication system that is used by various users and organizations. Most of deployments are based on client/server model in traditional SIP system. Especially, conferencing function is used for voice/video conference include file transfer and share remote applications through internet network. The conferencing system has an association between SIP user agents (Participants) and central point of control (Focus). The functionalities of SIP conference are organized in a centralized manner and heavily rely on dedicated servers. And it has some drawbacks to make the conferencing system is not reliable and scalable when participants increase. Peer-to-Peer (P2P) is another model different from client/server model. Every peer plays an equally important role in the network. P2P network is self-organized architecture, does not require any server in the network and hence make a good solution to those problems mentioned in above.rnIn this paper, we describe the architecture designed to construct Peer-to-Peer (P2P) network collaborating with existing traditional SIP for conferencing system. The details in this paper include the operations of how to create, join, leave and terminate the conference in P2P-SIP conference network. We have shown that our proposed scheme compared to other recently schemes is more attractive in terms of scalability (e.g. based on pure P2P), working with traditional SIP, as well as interactive communication approach for all SIP clients and extend function join our P2P-SIP conference.