The Great Client Design Of Autochthonic Transmission Meshwork In Dalian

At present Dalian now basically established in the local digital fiber, microwave and other secondary means of transmission network. In the use of equipment, local relay network PDH equipment still occupy quantitative superiority. But SDH equipment have reached a considerable scale, has been basically established a local network of hierarchical structure.Papers from the first local transmission of Dalian City Network for the principle of network programs and two brief description of the entire city of Dalian - transmission network. The design is formed by two 2.5G transmission ring topology form of tangential part features : This will enable Central Networking Business arbitrary exchange than through the slip road jumper CEN greater operational ease, Optional Routing more business, higher system redundancy. Through the formation of two ring network, part of the problem, only in the ring and seek a solution to another ring will not be affected.Dalian City Central, the main customers of transmission equipment company Huawei is the 2.5GSDH transmission products : OptiX2500+. The system was provided by Huawei transmission rating for STM-16 multi-ADM-level optical transmission system (hereinafter referred to O ptiX2500+), with large-capacity cross-connect matrix and multiple system configurations, can access various levels of business, to facilitate the realization of the transmission network scheduling and bandwidth management. Can be applied to various levels of the network, mainly in the province line and more complex, more demanding of the local relay network. ADM OptiX2500+ multi-system integration as one way transmission capacity to provide a wide range of multiplexing / transmission and multi-functional systems, the cross-connect function, PDH and complete business mapping reconciliation mapping function.Big clients transmission link synchronization of the entire transmission network to the normal operation played a pivotal role. The clock to protect the basic meaning when SDH optical network interruption occur, such as the failure nodes self-healing switching business. choose alternate routing of protection, Network Synchronization Timing also need to choose a new route to the entire network as the main benchmark to track the regular process. Or the entire network with a regular benchmark failure, the entire network routing choice of a new tracking another benchmark regular process. In SDH network, network routing and timing may change at any time, hence its regular performance may also change, Network Element must be able to determine whether or not the current clock effective, or other effective clock to search for the source Finally, according to tracking clock source-level decision to set up the tracking quality higher clock source also determine whether the entire network clock timing loop there, to be lifted. BITS paper to single-and double-BITS two of the SDH ring network clock protection configuration analysis.SDH network by the SDH network element through cable interconnection equipment from the Network nodes (yuan) and the transmission lines of the geometric arrangement constitutes a network topology. The effectiveness of the network (Channel utilization), reliability and economy to a great extent and its topological structure. According to the study of this chapter, I mastered the self-healing network classification and methods of implementation.Transmission system on the entire telecommunications network communication quality plays a critical role. Impact of SDH transmission network transmission performance of the main transmission error, including injury, jitter and drift.In this paper, I was on the local network through the existing network structure with the full understanding, on the full market research as well as a detailed site investigation was a lot of first-hand information, thus proposes building Dalian local transmission network major clients Central concept and principle of combining SDH, Dalian to the actual geographic situation, the principle of humane and rational design of the Central Group program.