Study On Softswitch Technology Applied In Next Generation Telecommunication Networks

Today,the technology of softswitch has been developed smoothly. In this theory,the writer put forward some thinking and opinions to the development of softswitch,the network organization and planning procedure to the Next Generation Network benefiting form the experience gathered in daily work.Above all,this paper simply addresses the status of conventional current telecommunication networks and some shortages of them are discussed. On the base of above, the concept of the NGN is introduced. The definition of softswitch and NGN from Ministry of Information Industry are presented in detail. Also, some outstanding strong points are mentioned. Then some research organizations on softswitch are presented. And the course of the standardization of softswitch is addressed, too. In particular, the processing of internal research is demonstrated emphatically. In succession the characters, the architecture, the interface and the protocols of softswitch are discussed deeply. In this part, H.323,SIP and H.248/MGCP protocols are stressed. Then the application of the softswitch in telecommunication networks of conventional and burgeoning operators are dissertated, especially in the third generation of mobile network. The work of 3GPP and 3GPP2, organizations for standardization of softswitch, are analyzed and investigated. And based on the conclusions, the virtues and disadvantages of three techniques of structuring network of softswitch are compared. At last, some reasonable and useful suggestions are provided for the construction of china's third generation mobile network. Combined with the result of study, networking methods of softswitch is analyzed in core network for 3G. Finally, networking methods in large-scale network and programming process and methods of NGN network are researched in softswitch. As a result, the most logical networking method and a set of integrate programming process and methods of NGN network are devised in softswitch. It provides a good example for programming and networking of the next generation network, also heads for commerce to do some...