Based On Sdh Technology Data Transmission Network Design And Implementation

It is the inevitable trend of the development with the world communication to implement network data transfer to build a basic physical platform for the muiti-operation, intellectualized and higher transfer capable information high way. The skill named SDH is the key to realize net transfer system which owns the world one standard and importance for the construction of the communication network system.In accordance with the demand of SDH, this thesis researched and analysed the cascade of SDH, LCAS, encapsulation and the procedure of net management, gived the idea with the research of solution of TM,ASON etc.Compared with the skill of ASON, MSTP, RPR, the writer stressed the emphasis on the design and practice of SDH net data transfer. It offers the service for the different data point through the standard ATM connection, meanwhile, with the SDH system, the writer stated the unitive criterion for NNI including the digital signal rate level, magnetic structures, complex method, and supervision and control and so on. Therefore, we can realize the world standard and high speed signal diciding into low speed signal branch one time, which we just called" one step reclamation" .The thesis gives the test definition of SDH system, and by the examples, analyses the specialty of the system, the writer called it tensibility, completely frontward and backward compatibility. Finally, the writer made a conclusion pointed the shortage and research direction of the system.