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“ISDN”(一线通)是综合业务数字网的简称.它是基于公共电话网的全数字网络,利用用户的普通的模拟电话线,可开展各种业务,例如打电话、发传真、上网、局域网互联、开电视会议、专线备份等。“ISDN’’是70年代末期由美国贝尔实验室提出的一种通过改造现有电信交换网络来提供多种通信业务的技术。对用户来说,就是能够在一根普通电话线实现最高128 KB/s的高速数据传送,可以同时处理话
“ISDN” stands for Integrated Services Digital Network, an all-digital network based on the public telephone network that uses the user’s regular analog telephone line to carry out various services such as making calls, sending faxes, surfing the Internet, LAN Internet, open video conferencing, green backup and so on. “ISDN” is a technology proposed by Bell Labs in the late seventies to provide a variety of communication services through the transformation of existing telecommunication switching networks. For users, it is capable of implementing up to 128 KB on a common telephone line / s high-speed data transfer, you can handle the same time