The Researches And Applications Of Next Generation Network Based On The Soft-switch Technology

The next generation network will evolve toward packet network. For the high cost and the broad covered fields, the traditional PSTN is still the important revenue source for telecom carrier. Network evolution and convergence must be done on the basis of current network, we can not re-construct a brand-new network despite of what we have now. What telecom carrier eagerly wants to do is how to propel the PSTN to evolve toward network based on packet network without high cost, in other words, how to merge PSTN with the data communication network. The next generation network that the soft-switch is the key point was produced under this background. The NGN which basic of the soft-switch is a new-style public telecom network upbuild by the IP technique. It gather the tone, data and video together and it belong a synthesized open network truss.This text sumed up and summarized the next generation network's basic conception, principia, frame and characteristic, evolution, develop trend and localization, it anysised the key technique that the next generation network come down to soft-switch,media gateway technique and media control gateway technique. To aim at the reference model of the soft-switch, it discussed the soft-switch's position in the NGN,functional characteristic,network characteristic,interface circuit,hardware platform and so on. Take the example of the Guizhou intellectualized network reconstruct, it developed the appliable research which about the next generation network basic of the soft-switch, and it advance the detailed data plan. By adjust existing framework, it raise operational ability about the fixed switch network, provide neatly the increment operation to the consumer, enhance the faithful rate. it use soft-switch equipments to construct the simple assemble layer and add the SHLR to make the intellectualized local network come true, and to make the ring go into operation. Basic of the NGN intellectualized network reconstruct design plan, it use the plan about cut and plug in the lines to make true the project design plan. The text introduced and layout the aspects of the preparation and the subsequence to ensure the actualization of this project availability and orderly.