The Design And Research Of Access Media Gateway Testing System In NGN

Nowadays,the national Response Center of subscribers's line failure is realized by 112 centralized processing system. Meanwhile the traditional 112 system only works for users who use permutation directly.With the development of communication technology. and access network technology,network access equipments have solved the telecom users' request for communication wherever they are in towns or villages,and then access network has been the mainstream of net access for telecom users.Consequently,after it has new network users.there's one important task in the development of access network that how to do line test for the new access network users in the current 112 centralized processing system.The access media gataway testing system of which the author participate in the design,is one actual application of 112 centralized processing system..This article starts with the analysis and research for access media gataway and it's testing system,and brings forward the designed project of testing sytem for one access media gataway (?)med Litespanl540,meanwhile emphasized discussing the design for principle,hardware,driving software as well as the test and validate of hardware function for several models in this gataway. And then it investigates the actual realization of four models in the system,especially dicribes its core model named Agent112.Presently,the testing speed of 112 testing system is quite slow.so practically realized methods need to be worked out.The main tasks and innovations of this article is:1, It summarizes and analyzes current condition of national centralized processing testing system2, It puts forward one method of gataway testing to realize centralized test. The most difference between gataway testing mode and direct testing mode is that testing request will be transferred from testing protocol gateway to remote subscribers. In this mode,testing control center can do test for remote users to get the result after it received testing request.And it solved the problems in direct testing mode, such as too much consumption with system resources,lots of chains have to be set up and so on.3, It shows the whole design and actual implement of this testing system.For the slow testing speed in current access network gateway testing system,it emphasizes that applying multithreading could enhance testing efficiency of the system..Compared by test,it proves that both speed and performance have great advantages when applying this multithreading in access network gateway testing system.This is a great point of innovation in the article.