Optical Transport Network (otn) Switching Equipment 16x2.5g Board And Implementation

In recent years, data services continue to increase. The MSTP technology based on SDH network, has gradually can not meet the emerging needs of users. Based on the ITU-T G.709 system, the optical networking equipment ensures operators to proprietary data and do not need to re-establish the network, because the redundant bandwidth of the original network can be reused. We can provide both traditional TDM business, but also achieve the new broadband data access efficiently. It can save money, reduce duplication of investment in the network and further improve the utilization of the existing network.The seconde chapter introduces the basic technology of OTN, outlines the characteristics of OTN and key technology. The third chapter describes the OTN switching equipment which is developed by me and its functions; system architecture; backplane interconnect and power distribution. Chapter IV focuses on the 16xOTU1 board which is designed and producted by me, including the design of optical data transmission channel and control platform design. On the optical data transmission path, firsly the optical data signal should be transferred to electrical data signals, and then by the board of the electrical data signal processing, including framing, electrical multiplexing/ demultiplexing, mapping/demapping, sliced/reloading and the extraction/ insertion overhead. Control platform is built around 32-bit PowerPC-based CPU architectures, and its function is to control and overhead processing, including the global interrupt, alarm processing, reset, clock control, overhead transmission and optical signal processing and detection. Finally, the various functions of the board and performance were tested, including optical data channel performance testing, including return loss, receiver sensitivity, jitter, propagation delay, and gives the test results and the actual waveform; electronic data channel performance tests including a test clock signal and 2.5G high-speed signal of the test, and gives the test results and the actual eye. The results show that the system to meet the G.709 optical network transmission equipment requirements has entered the business.