DDN网在惠州市电信业务中的应用

Application of DDN in Telecommunications Service in Huizhou

本文介绍了ＤＤＮ的基本结构和作用，分析了ＤＤＮ设备的几个特点，指出了ＤＤＮ在惠州市电信业务中的几种主要的应用，最后还指出了ＤＤＮ设备使用中存在的问题。

In this paper the basic structure and functions of DDN are presented ;the characteristics of DDN equipment areanalyzed;and the major applications of DDN in telecommunications service in Huizhou are proposed,while the problemsthat may arise in the use of DDN equipment are pointed out.