Advanced technologies like digital mobile communications,SDH, dense WDM,etc. have found wide application and high and new technologies like B-ISDN and ATM are on trial over the network.

 
  • 先进的数字移动通信技术、SDH光通信系统技术、密集波分复用技术得到广泛采用,宽带综合业务数字网、ATM宽带交换系统等高新技术正在网上试验。
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