数字用户线路增容系统的设计

Design of Digital Subscriber Loop Multiplier System

数字用户线路增容系统主要用于快速扩大电话用户数量 ,其优点是免除增加线路的工程成本。配合数字化网络趋势 ,该系统采用了 ISDN的“U”接口传输技术和 ADPCM编译码技术。

This paper describes the Digital Subscriber Loop Multiplier System,which is applicable to expand telephone subscribers quickly. The advantage is that the engineering cost of multiplying circuit can be avoided. According to the trend of digital network,the 'U' interface technology of ISDN and ADPCM technology is adopted.