通过可正常传输话音信息编码的时隙位,周期性地传送信令信息的一种数字随路信令方式。
双音多频是一种在话音信道用音调来表示数字的方法,它可以用来在模拟话音信道传输信令,因此在通信中有广泛的应用。
Provide is a voice channel and tone to represent Numbers method, which can be used to transmit analog voice, so in communication has been widely used.
双音多频(DTMF)是一种在话音信道用音调来表示数字的方法,它可以用来在模拟话音信道传输信令,因此在通信中有广泛的应用。
Provide (DTMF) is a voice channel and tone to represent Numbers method, which can be used to transmit analog voice, so in communication has been widely used.
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