Hegang City Unicom (Huanyi) SDH Transmission Network Planning And Design

In the highly developed information society,for the telecom operators,transport networks are important hubs of exchange,data,power,wireless professional,have a safe and stable network environment is an important means to retain users.With the fierce competition of the telecommunication market and the continuous renewal of network architecture,how to improve transmission network security and reduce the waste of resources,has become a main problem to be reckoned with operator set up transmission network.The synchronous digital transmission system is the SDH,it has the multiplex,line transmission,exchange function,and by the unified network management system operation management of integrated information network.The Hegang Unicom's method of transmission is based on SDH transmission network,but in reality maintenance,this method has some problems such as network bad security,low utilization efficiency,the mode of networking has defect,these problems have a big serous impact on the service quality about fixed telephone,broadband,mobile phone business.The dissertation summaries the problems existing in the operation of the current network of Hegang Unicom Company,combined with the difficulties encountered in the maintenance of reality,on the basis of the original basis to further optimize the network mode,makes a change of topology,increases the corresponding boards which are based on carrying business,through the switching test to test the rationality of system design and the protection mode.