摘要
介绍了利用单片机实现用户集线器的原理及总体设计制作方案。
The theory and general method for realize a users’ telephoneline collective system with MCU is reported,and the detailed theory and circuit implementation of the signal detective unit are also given.
出处
《四川大学学报（自然科学版）》
CAS
CSCD
北大核心
1999年第1期82-86,共5页
Journal of Sichuan University(Natural Science Edition)
关键词
用户集线器
摘机检测
挂机检测
信令检测单元
users’ telephone line collective system,take off detection,hang up detection,matrix exchange,cruise detection,busy signal generator
