The Research And Implement Of Software Of Voip MobilePhone Based On SIP

With the rapid development of computer technology, network transmission technology and Digital signal processing technology, various IP based packet switch network real-time multimedia applications are widely in use. As a typical IP application, VoIP (Voice over IP) has been a hotspot of technology research now. As a network researcher, I think it is imperative to work on the studying for VoIP technology.VoIP is an IP telephone based technology which provides various value-added services.It can fully and efficiently take advantage of global network resources and provide more multimedia services than traditional technologies do. As a critical part of VoIP system, VoIP gateways are widely used to supply cheap VoIP accessing services and value-added services based on it.This paper describes The Research and Implement of Software of Voip MobilePhone Based on SIP. This system is based on SIP, adopting C/S structure. It is a original devise to Adopt BlueTooth technique as the wireless method It nuts on NNOS operating systems and is achieved with Edit-Plus.Based on the structure of hardware,I put forward the structure of software. The software architecture is modularized and leveled with different modules communicating through uniform interfaces and different layers keeping loose coupling. These make the structure more clear and the codes more portable and extensible, which can be easily applied to similar telecommunication systems.In this paper ,the implement of MMI is particular described. Wireless Voip is the significant innovation of this system, and it isimportant for further research about VoIP technology. Indicate through the analysis of performance, it is reasonable and practical to design ideas and methods showed in this thesis. And these are valuable for developing similar systems.