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From 2001, our country ADSL wide band construction enters the continues high speed development phase, in 2002 our country ADSL always constructs the quantity about 4 million, in 2003 always constructs the quantity about 20 million, in 2004 always constructs the quantity about 45 million, in 2005 further the swift and violent development, estimated ADSL always constructs the quantity to surpass 70 million in 2005, By telecommunication experience many years for foundation, this article provides comprehensive、highly effective、operable、manageable、gainable、sustainable development solution for the current high speed growth ADSL network construction .This project mainly unifies the actual situation of the Chinese telecommunication xDSL network , analyzes each kind of factor which affects the xDSL transmission quality, researches and improves the method of wide band turns on the net transmission quality. researches mainstream DSL turns on the technology in the Chinese telecommunication network at present, including ADSL、VDSL、HDSL/SHDSL、ISDN and so on . through the theory and the experiment analyzes each kind of line condition to the DSL transmission quality influence, including the line diameter, the line length, the different line diameter mixes meets, the security unit, the bridge joint tap, the string harasses, the line longitudinal trim, other disturbances and the noise and so on; Investigates and studies the Chinese telecommunication copper wire resources situation , each kind of xDSL technology service condition, going beyond a line rate each place, the test as well as the solution way, and the method and flow of transportation each place. Through the theory and the experiment, the project researches each kind of line condition to the DSL transmission quality influence, included the line diameter, the line length, the different line diameter mixes meets, the security unit, the bridge joint tap, the string harasses, the line longitudinal trim, other disturbances and the noise and so on; the project studies the actual transportation demand of ADSL, standardizes Specification of revolution service strut system correlation equipment and connection between the equipment.Through the test、the investigation and study、the analysis, this project has obtained some research results. The project tests and analyzes each kind of line condition to the ADSL transmission performance influence; Appraises the Chinese telecommunication existing copper wire resources; Analyzes and studies the ADSL line to clear the speed and the going beyond a line rate; Proposed to improve the ADSL transmission performance measure; Proposed the ADSL line lays and revolution service request;
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