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ISDN起源于70年代的欧洲,但直至90年代才开始在世界范围内得以真正的普及应用,其中历经了漫长而又曲折的发展过程。就技术与功能两方面来讲,ISDN是目前世界上最成熟、普及最方便和容易的多种业务广域通信网。那为什么它的发展却走了如此之长的弯路呢?当前世界范围,尤其是中国国内的ISDN发展情况又如何呢?下面就这些问题做以下基本介绍,供读者参考。全球ISDN技术市场如火如荼在ISDN发展历史上主要经历了两大障碍。一是通信协调方面的障碍;二是人为政策方面的障碍。由于ISDN是在现有公共交换电话网(PSTN)的基础之上建立起
ISDN originated in Europe in the 1970s. However, it was not until 90s that the ISDN was truly popularized and applied all over the world. The ISDN went through a long and tortuous process of development. As far as technology and function are concerned, ISDN is the most mature and universal wide-area communication network for various services in the world. So why its development has taken so long detours it? The current world, especially in China ISDN development situation? What follows these questions to do the following basic introduction, for readers reference. Global ISDN technology market in full swing In ISDN development history has experienced two major obstacles. First, communication and coordination obstacles; Second, human policy obstacles. Since ISDN is built on the existing public switched telephone network (PSTN)