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城域网是指覆盖城市范围,业务丰富,支持通信协议众多的网络。近年来,我国的通信行业的发展逐步向IP迈进,城域网要完成的业务需求较多,不仅要具有新业务支持能力,满足可控服务、网络安全以及业务分区,还要保障高的业务质量和可拓展性,所以,PTN技术成为城域网发展的关键。本文对PTN技术进行了系统的介绍,并且分析了城域网当前存在的问题,进一步研究了PTN技术在城域网中的应用。
MAN is the coverage of the city, business-rich, support for many communication protocols network. In recent years, the development of China’s communications industry has been gradually moving towards IP. The metropolitan area network has more business needs to be completed, not only to have new business support capabilities to meet the demand for controllable services, network security and business partitioning, but also to guarantee high business Quality and scalability, so PTN technology has become the key to the development of MAN. This paper systematically introduced PTN technology, and analyzed the existing problems in MAN, and further studied the application of PTN technology in MAN.