Application Research And Design Of SIP In Softswitch

With the constant development of data business, traditional telecommunicationsnetworks which mainly undertake voice operation are faced with large-scale reformand change to adapt to the next-generation network development which focuses onoperation.This thesis firstly analyzes the existing problems concerning with softswitch,studies the principle and structure of SIP protocol according to its characteristics. Thepaper raised a design idea of SIP protocol warehouse. Meanwhile, the article gives thedesign of business level in terms of the special needs of business level realization bycomprehensively using UNIX shared memory technology, multithreading technologyand dynamic searching technology based on HASH TABLE. Finally, the thesisanalyzed the intercommunication of SIP system and soft exchange, putting forward anintercommunication model and relating control flow.From the development and elementary testing effect, the design idea and partlyrealization raised in the thesis has solved the main application problems of SIPprotocol under softswitch system, such as the design of protocol warehouse,intercommunication issues and crossing private network issues. The following job is toperfect the design and realization of SIP protocol warehouse and strengthen theapplication of the protocol warehouse in practical system at the same time in order tolay a sound foundation for large-scale commercial use.