1)Dual Tone Transceiver DTR,双音信号收发板2)Signal Tone board SIG,信号音板3)Dual-Tone Dialing,双音发号4)DTMF,双音频信号5)DTMF signal send and receive,DTMF信号收发6)Send-digits signal,"拨号音信号;""请发码""信号"
用法和例句
This paper introduces the technique of using PSTN as the transfers medium for remote control where the DTMF is used to get the control command.
