Development And Application Of Multi-Services Access System

Topic from enterprise project is advanced network management system integrated business access solution in order to resolve the current problem faced by access network. It based on a variety of access technology. The system can be a very good solution to the current access network problem, including low-bandwidth, network complexity, many point of failure, operation and maintenance costs of higher. For the development and transformation of access networks, especially optical access networks, the system provides a new direction.The entire R & D work has completed in Beijing Zhengyou Network Technology Co., Ltd. We use sub-modules according to the functions of a cooperative approach, focusing on some of the most commonly used access technology. The System integrates of the PDH, SDH, Optical Ethernet, MSTP technology and a powerful network management capability. It can be linked up metropolitan area network and backbone network, extended to the user's desktop through the fiber-optic. It is a complete, practical, strong multi-service access system.Comparison of this article first briefly described the access network, optical access network concept. Then, it presents the application of several optical access technologies and analysis of their strengths and weaknesses. Combined with the current access network status and questions, as well as the development trend, it presents the current application of integrated optical access technologies, set up an integrated service access systems idea. On this basis, the development team carries out Multi-Services Access Platform system of R & D and testing. The system includes MSAP155/622 CO integrated service access platform and a variety of remote access technology user equipment unit. A variety of remote devices connect to the same central equipment. Central equipment to a number of businesses from remote devices together, format the standard STM-1 or / STM-4 optical interface of the SDH or Gigabit Ethernet (1000BASE - X/1000BASE-T) interface, connecting providing point or accessing the SDH transmission network or the IP switching network. Compared to the current AN System, characteristics of the system are easy access with a crisp, business configuration changes flexible, high bandwidth, scalability, and application flexibility, management convenience, relatively low cost.In this paper, the author combines the actual development work; described in detail the various parts of the MSAP system functions and related technologies, a variety of access technologies realize method, software management system.Article also introduces the MSAP system in the practical application of several solutions, including the use of the whole system, all kinds of network applications, how to rely on the MAN and Backbone network access business. The paper described the selection of equipment and connectivity, business configuration, network management solution links, provided the actual use of these experiences and solutions, proved that MSAP system is feasible and has a certain advantage of the new access network solutions.Part V of this article describes the MSAP system faced a number of issues, pointing out that some of the MSAP system deficiencies and inadequacies, the future direction of development, as well as new technologies such as EPON introduction.In the last article, the author sums up the entire thesis work, introduces the currently engaged in further research and development.In the course of writing this article, MSAP central equipment was issued by the National Patent Office "utility model patent certificate", certificate No. 1005193, Patent No. ZL 2006 2 0129750.X.