The Frame Design And Operation Realization Of Voice Server Based On Sip

With the development of the information technology, request getting the information more and more sooner, VOIP technology,which transmits multimedia information through IP network has been developed a lot. Nowadays,most of teleconference system base on H.323 protocol. SIP(Session Initiation Protocol) was established by IETF in 1999.The framework of SIP is simple which is easily implemented and applied conveniently.The voice server based on sip can converge lots of VG and other terminals to a voice network which can be easily managed and upgrated.This voice server can exert and boost up the trait of the gateway or IP phone,and easily realize all sorts of complex operations.This paper presents a unique voice server frame which has vivid blocking and arrangement design means.This frame implements the abruption between the material stack and the disposal of protocol information through the introducting of user manage module in understratum,and implement the abruption between the call disposal and operation disposal through the introducing of the call control module and the location server in the superstratum.This blocking design idea cam make voice server realize the modification of protocol stack and the extension of the operation in supertratum easily.This paper labors the blocking design idea and lay stress on reaserching the user manage module,call manage module and location server. This paper describes the realization flow of operation and rebuild of location server particularly,and explains how the voice server realize the operation in the VOIP system through a example(Call Transfer).At last,voice server system was successfully achieved based on the design project above. The voice serve in the experimentation environment that was constructed by myself and test department is that the function is perfect, the performance is stable,so it reaches our originally design request.