The essential concepts, network structure and programming principle of metropolitanareanetwork (MAN) are introduced briefly. And the solution for MAN construction of China Railcom is discussed.
简要介绍了城域网的基本概念、网络结构、规划原则，并针对中国铁通城域网建设论述了解决方案。
2
This paper introduces the concept and definition of broadband metropolitanareanetwork, then discusses the functional architecture model of broadband metropolitan access network.
本文讨论了宽带城域网的概念、义，并针对宽带城域接入网的功能结构模型进行了探讨。
3
A broadband access server (BAS) was used as auditing agent to implement a distributed security auditing system on metropolitanareanetwork (DSASMAN).