| The next generation network has been popularized and applied worldwide since it was first presented in 1997. One of it's key technology, Softswitch, is becoming more and ripe and powerful under the pushes of numerous manufacturers. At present, there are a lot of pilot projects in the whole country in every large telecommunication operator, carrying on the group network application of NGN. It is predicated according the industry, that the commercial network of NGN will dispose on a large scale from 2007, and the focus of NGN will transfer to develop more advanced business by 2010.The thesis through the research to NGN trial network, it studies NGN and it's the essential technical principle, it analyzes the mechanism of the NGN network design, it explores each kind of question which NGN commercial center possibly appears, and it seeks suits the existing network condition the plan, the paper research content belongs to one of current correspondence domain research hot spots, has the wide spread practical application prospect.The paper unified the existing telecommunication network evolution, the theoretical analysis and the system constructs actually unifies, elaborated NGN and its the essential technical principle, through the NGN experiment network exploration telecommunication network evolution, confirms the Softswitch network way the feasibility. the paper unified the Next Generation Network project of Heilongjiang province correspondence company, it explains completely the technique details and possibility of the evolvement of network through technique project, service project, network safety guarantees, Synthesize to connect into the project, Loading net solution. As a result, it seeks the experience in the actual design and in the application for the next step of NGN development tendency.The paper returned to give back to the service test and the application example, by proved these technical and the measure validity the feasibility and the usability. |
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