Design And Implementation Of The Conference Subsystem Of Cooperative Communication System Based On Restcomm

Network based communication has gradually become an important communication mode in the modern information society,which has also brought a change to the form of business communication.Collaborative communication systems are playing a more and more important role for enterprises.Cooperative communication is a unified communication platform system which is customized within the enterprise.Many communication modes are integrated on one platform seamlessly.Therefore,research and development of cooperative communication system can help enterprises to improve work efficiency and promote enterprise information upgrading,which has great research significance.This paper mainly focuses on the design and implementation of the conference subsystem in the cooperative communication system.The whole system is based on the Restcomm real-time communication platform.Using the underlying protocol stack,server and independent components provided by this platform,we can design,customize communication applications.The conference system implemented in this paper mainly uses the SIP Servlet components of the Restcomm platform and the Restcomm media server.The separation between control module and media module is the key method to design the conference system.In this paper,a complete and effective finite state machine is designed to manage the protocol state.We use SIP Servlet components to implement the whole conference system signaling logic design based on SIP protocol,according to the SIP Servlet API to develop application services.The services mainly including the construction of meeting with control,organization control,program control conference,conference call additional logic control module.The media server is mainly responsible to connect the media stream between media server and terminal and cooperate the SIP server implementation of conference control function in the media level,such as meeting,mute,second hall,recording and other functions.The SIP server and the media server are connected by the control interface provided by the JSR309 standard to realize the control of the media server.This paper extends the existing meeting scene,joining the call logic based on conference logic,such as the negotiation transfer,pre-transfer,but also analyzes the realization of load capacity and inner domain conference meeting,to meet the more abundant custom functions.