多信道共用方式电话线路扩容装置的研究

摘要

In order to resolve the restriction of telephone line,the authors empoly the multi-track shared mode to study the expansion device of telephone line,expatiate on the work principle of expansion device of telephone line and to analyse the increased call lose by use of expansion device of telephone line.%为解决电话线路紧张问题，采用多信道共用方式设计研制了电话线路扩容装置，阐述了电话线路扩容装置的工作原理，并分析了采用电话线路扩容装置后的呼损．