| Recent years, the communication ability of telecommunications network increases obviously. Data service based on internet develops quickly and the requestment is diversified, which induces that traditional circuit-switched network can not keep up with the development of new service. However, next generation network (NGN) based on Softswitch utilizes the data network to carry voice, data and video. Evolving to NGN is inevitable in the course of network development. Softswitch is the core of NGN. SIP is the core protocol of NGN. Thus, the research and application based on SIP platform already become the focus.The proposal of conception- telecommunications business pilotage is making great progress to the development of applications based on SIP. Its Functionsare as follow : to support enterprise tasks of the project arrangements and personal day-to-day work, and support enterprises in internal communication and communication; support enterprises mobile office, inter-departmental coordination and synergy and enhance the mobile/collaborative office of communications efficiency; to provide users with convenient, application integration of fixed and the day-to-day work of management tools and communication tools; to provide stable, reliable, secure enterprise communications business platform based on unified management, unified charges, unified authentication; to make full use of existing telecommunications services platforms and third-party information sources, the basis of a value-added business. The work of this thesis is based on the background above. Fistly the article briefly introduces the architecture of NGN and related protocols (SIP,etc); then analyzes the features and functions upon different types of SIP Application Server, and proposes the new value-added business applications based on the SIP application platform-Webconference System(WeChat), focuses on the design of module and implementation process; finally, it states the performance disadvantages and improvements. |
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