Based On The Sip Mobile Multimedia Key Technology And Realization

In recent years the rapid development of the telecommunications industry has been lost its glory, resulting from a important reason for this situation is the lack of suitable people need, and can further stimulate the development of the telecommunications industry, new business and new applications. At the same time, to an open, distributed and integrated as the main features of next generation network (NGN, Next Generation NetWorks) technologies are profoundly changing the traditional telecommunications network concept and architecture. In the future, features business is built on open platforms, content providers, supported by a number of personalized multimedia services, the SIP protocol is to enable the emergence of this new business platform possible.SIP (Session Initiation Protocol, Session Initiation Protocol) an application layer control for VoIP signaling protocol that is proposed by IETF (Internet Engineering Task Force).As the SIP protocol with a simple, flexible technical features, this agreement is gradually replacing H.323 protocol as the standard protocol for VoIP. SIP protocol functionality and network scalability scalability is very good for the development of a variety of telecom value-added services industry provides great convenience. Therefore, SIP protocol in recent years has been the concern of many strong and development, with a fair amount of research significance and realizes value. In this thesis, base on the study through a survey, combined with the development of the telecommunications industry needs and the realities of work designed to develop a SIP-based mobile client end-system. Thinking in the design of the system through the SIP protocol services in the next generation network concept will allow SIP protocol theory and practical application environment combining the use of the Nokia S60 platform, using Carbide C + + programming design, from the perspective of software design and development put forward the system design goals and basic principles, and describes the system design and implementation process. Through the practice shows that this paper, SIP-based mobile client terminals work modeling thinking is practicable. Another article also briefly addressed the SIP-based Android platform in the end-customer research and development. Because Android is truly open and comprehensive platform for mobile devices, which has a very rich graphics system support for multimedia features and a very powerful browser, and has a very good hair on and debugging environment. So we must conduct studies and preliminary designs for future follow-up to lay a good foundation.In this thesis, based on the S60 mobile client terminal project has now been completed, based on the Android mobile client terminal is still further research and development.