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。