Design And Implementation Of Digital Subscriber Line Test System

Client Channel Testing System not only the hub between client and LAN Terminal but also the joint of Exhchange System and Transmission System. By the system clients can check the fault point of the line.The way old customers check fault point is by simulation,hat is to check by cyclic impedance spectrometry.This way can't be precisely positioned and statistics can't be accumulated and saved.The article is attached to digital,Maintenance and Administration,and statistics analyzing. According to the condition of using testing system,we put emphasis on the data management and data analysis.First,beginning with the current function of client testing and technique , the article introduces the purpose and meaning of developing client testing system. Client channel testing system can be achieved in one shared equipment and it can also provide the output interface .Thus it covers the terminal and client terminal and finish the testing of multi switch and multiprocess.Second we introduce the environment of the system -introduction to Visual C++,sublanguage of C,principle of designing and the feature of C language. At the same time , we show the background of SQL Server and the environment of developing hardware.Next , the requirement and functional design of Client Digital Channel Testing System are given. In detail ,we introduce the frame of the system and analyse the module function. The System is made up of NMGW,ATD,RCS,GateWay,which can be separated. They can be installed in one computer or many computers. The core component of GTS consist of shared date base (SQL Server),GTSSVR,ATA,GTSMFD and the detailed function of each module. In the function of System Analyzing , we definite the main function : narrowband switch,Access Networks, NGN Client Testing System,ADSl Client Testing, central switching network testing,file management,historic records,discreted number,routine testing,client management , number and the line management,inquiry function,hardware supervisor,parameter setting . And we design SQL Server for client data information.Last , we introduce the testing application in module of functional system and the process of achieving. Because of the particular needs of telecommunication , the article puts emphasis on the way of parameter setting , testing , indication of testing results and the saving , input and output of database management as well as the management of backuping. We use screen shot to explain.For half year testing , the system works well . At present , it has been put into use and get well received.