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DTMF is a reliable and mature technology. Because it can provide the higher dialing speed, it has rapidly replaced the dial pulsing signal which the traditional dial telephone used.
DTMF是一种可靠而成熟的通信技术，由于它可以提供更高的拨号速率，迅速取代了传统转盘式电话机使用的拨号脉冲信号。
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