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解说 人烟过疏地区用用户线传输方式,是为满足较远离电话局地区对电话的需要,提供既经济又品质高的用户线路传输方式。 数字用户线多路复用方式(SM—DI方式),是综合增量(Δ)调制,高速脉冲传输等的数字传输技术和纵横制交换技术等的传输方式,在采用7对心线的1个系数中最多可容纳94个用户。94个用户把24路数字线路使用在分时系统中,当每1个用户的呼叫量设为0.08爱
Explaining the area of over-population with subscriber line transmission, is to meet the needs of the telephone away from the telephone area, to provide both economical and high quality subscriber line transmission. The digital subscriber line multiplexing method (SM-DI method) is a transmission method such as digital transmission technique such as delta-sigma modulation, high-speed pulse transmission, and crossbar switching technology. The coefficient can hold up to 94 users. 94 users to 24 digital lines in the time-sharing system, when the number of calls for each user is set to 0.08 love