Design And Implementation Of Number Analysis & Routing In Composite Zone Management Enabled Softswitch

The Next Generation Network (NGN) is an integrated and open network, which can provide multiple services, such as voice, video, image and data services, over a common infrastructure. As the core control device in NGN, Softswitch has become the hot spot in the domain of telecommunication.The Softswitch is based on IP, and realizes not only the separation of service logic and call control functions, but also the separation of call control and bear connection functions, cross-zone has become one of the important characters of Softswitch. Composite zone management is just for this. As the essential part in communications, number analysis and routing selection must provide support for it. This paper mainly focuses on the design and implementation of number analysis and routing in composite zone management enabled Softswitch.Having analyzed the characters of Softswitch network, the paper presents the concept of logic zone and logic centrex, and proposes the model of composite zone management, which is based on the management of logic zone and logic centrex. The composite zone management provides a more flexible way for Softswitch. Compare with the function of number analysis and routing in traditional telephone network, the paper analyzes the function of the number analysis and routing in composite zone management enabled Softswitch, then brings forward the way for the design of the number analysis based on analysis tree and the design of the Policy Routing. In the last part, the paper describes the implementation and testing to prove the feasibility of the design and implementation method concerning the number analysis & Routing in Softswitch.The innovation of this paper is the presentation of composite zone management, which is more customize for Softswitch. Based on this kind of management model, the paper analyzes the function of number analysis & Routing, and brings forward the design of number analysis and routing in Softswitch based on the result of the analysis.