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1.INS(Information Network System)是什么? INS是信息网络系统的英文缩写。在该系统内,电话线路不仅用于电话通信,而且也用于多种通信和信息网络。日本电报电话公司(NTT)正在加速组建INS。目前,日本的通信网络分为五大类:1)电话网络,2)电报网络,3)用户电报网络,4)数据通信网络,5)传真网络。INS旨在将上述五大类网络综合成一个数字网络并建立数字传输通信网络。这样将增
1.INS (Information Network System) is what? INS is the abbreviation of information network system. Within this system, telephone lines are used not only for telephone communications but also for a variety of communication and information networks. Nippon Telegraph and Telephone Corp. (NTT) is accelerating the formation of INS. At present, Japan’s communication networks are divided into five categories: 1) telephone networks, 2) telegraph networks, 3) telegraph networks, 4) data communications networks, and 5) fax networks. INS intends to integrate the five major types of networks into a single digital network and establish a digital transmission network. This will increase