| In today’s communication networks, SDH transmission network is widely used, which is considered as the basis of the development of PTN.Therefore it is of important significance to the study of SDH transmission network.This thesis intends to study transmission subnet’s constituting and how to divide it, and simulate a typical transmission subnet. According to the study of the configuration of its business and self-healing protection, summary the characteristic of a typical transmission subnet.Then according to the design requirements,use the concept of transmission subnet to divide a transmission network at the provincial level, gradually complete the design of the transmission network, and validate the use of the concept of transmission subnet to divide a transmission network to realize its design feasibility.Finally, intercept more than a ring type chain transmission subnet at the provincial level,and make its environmental analysis and the study of its configuration.In this thesis, the traffic configuration method of transmission subnet and the principle of SNCP protection are presented in emphasis.Choose two typical network elements to analyse and study their hardware configuration, logical system and signal flow.The study shows that the concept of transmission subnet can optimizate the complicated design process of transmission network and can make problems clearer and simplier by using this method to analyse and handle complicated configuration of its business and daily maintenance of transmission network.It also can reduce the rate of wrong configuration to a great extent and can be designed in engineering. |
