多频互控记发器信号的数字解码

THE DIGITAL DECODING METHOD OF THE MFC SIGNAL

讨论了用于电话交换网中作为局间信号的多频互控记发器信号的解码方案。这种信号是一种六中取二的双音频码，文章讨论了用于此种信号的数字解码的方案和指标。通过对三种算法的比较，选择出ＯＤＦＴ为最佳算法。以廉价、通用的单片机为主体组成了实用的解码部件，现场实验具体较好效果。

This paper presents a new decoding method of the MFC signal used in the telephoneswitching network.This signal is a dual tone two-out-of-six code. The paper also discussesthe decoding scheme and features of the MFC signal.The ODFT is considered as the best algo-rithm compared with the other two. A single chip microcomputer-based decoder is implementedand the results in field expriment is good.