摘要
介绍了全数字排队机的组成和功能，分析了中国１号信令系统的主要特点，设计了数字排队机的多频控制电路，实现了多频收发码的接收与传送。
The composition and functions of the digital queue machine is
introduced with analysis of main characteristics of China No.1 signaling system.The multi
frequency compelled circuit is designed for the digital queue machine and the reception and
transmission of the MFC code is realized.
关键词
数字排队机
多频控制
信令
数字中继接口
电话网
digital queue machine,multi frequency
compelled,signaling,digital relay interface
