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In recent years, the rapid development of China's telecommunications network , has made great achievements , and comprehensive communications capabilities significantly enhanced . However, with the integration of the industry trend , the telephone network , computer networks, cable networks tend to fusion , the network faces increasing pressure . How to plan the network structure of the next generation network development strategy is essential for network operators , because it is directly related to the problem of how to reduce the network equipment throughout the evolution of fixed investment costs , and maintain a competitive advantage in the telecommunications market . Look at the trajectory of development in accordance with the fixed exchange network , the the fixed intelligent , softswitch and IMS network at different stages of development . PSTN is the basis for the development of the voice network , softswitch is an insurmountable important stage , and IMS NGN final target architecture , the three will have to appear in the network , and long-term coexistence [ 11-17] . Date, worldwide , there are many telecom operators active in experimental and commercial deployment of softswitch . China's telecom industry softswitch network technology also given a great deal of concern , China Telecom , China Netcom , China Unicom , China Railcom , China Satcom and China Mobile have launched a comprehensive softswitch try and commercial deployment . XX Netcom is China Netcom in Southern Company PSTN network started late, there is no large northern network online device models range . Therefore, based on the business development needs in a timely manner , the steady introduction of soft switching technology , optimize the deployment of voice networks , in order to achieve the smooth evolution of the exchange network . This article introduced in the local network of China Netcom southern the XX city of Netcom softswitch for instance , of the the softswitch network construction program from the network structure , network element set , then the road network networking , networking of the signaling network , bearer network networking , network resources planning, operation and maintenance of programs from a planning perspective , and to develop a three - year overall development plan target of XX City Netcom softswitch network , the outlook of future network evolution .
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