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1.光线路保护的重要性密集波分复用技术和高速数字交换技术的应用,越来越多的信息业务集中到较少的节点和线路上,对这些线路所在的光网络可靠性提出了越来越高的要求。据统计,每年我国发生超过2000次的光缆阻断,直接通信损失超过10亿元,给国民经济各行业造成了不可估量的重大损失。因此,网络生存能力成为网络设计与构建中要考虑的重要因素,而光路层的保护与恢复对于整个网络的生存能力有着重大的影响。2.光路自动切换保护是最佳选择
1. The importance of optical line protection Dense wavelength division multiplexing and high-speed digital switching technology applications, more and more information services are concentrated to fewer nodes and lines, the optical network where the reliability of these lines Higher and higher requirements. According to statistics, more than 2,000 optical fiber cables have been blocked each year in our country and the direct communication losses have exceeded 1 billion yuan, causing immeasurable huge losses to various sectors of the national economy. Therefore, network survivability has become an important factor to be considered in network design and construction, and the protection and restoration of optical layer have a significant impact on the viability of the entire network. 2. Automatic switching light path protection is the best choice