摘要
介绍了一种实用的移动通信系统中的电话互联接口电路，运用单片微机技术进行接口电路的控制，利用双音频编／解码电路、语音集成电路等实现二／四线变换、语音提示、双音频信号的收发。通过电话互联接口电路实现移动通信系统中无线与有线之间话音和数据通信的自动接续。
A kind of useful DID/DOD interface circuit in trunking communication system is intro- duced , which is controlled by a singlechip microprocessor . The DTMF enoode/decode circuit and voice IC etc. are used to provide 2/4 wire conversion, voice indication, sending and receiving of DTMF code. DID/DOD intcrface circuit provides the automatic access to voice and data communication between radio subscriber and PABX/PSTN subscriber in a mobile communication system
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
1997年第2期68-70,共3页
Journal of Harbin Institute of Technology
