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分析了通信城域网的体系结构、组网原则和组网要素,并根据某市城域网的发展特点和某市地铁网络,提出了一个基于核心层、接入层两层结构的某市城域网的系统设计方案。
The architecture, networking principle and networking elements of MAN are analyzed. According to the development characteristics of MAN in a city and metro network in a city, a city based on the two layers of core and access stratum is proposed. Metro system design.