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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The man could barely put the phone down after telephonic board meetings ended at Goldman before speed-dialing Rajaratnam to (allegedly) give him the news.

高盛董事会的电话会议刚一结束，这家伙连电话都没来得及放下，就单键拨号联系拉贾拉特南，（据称）向其吐露了相关消息。

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However, the Bell System was intrigued by touch-tone because it increased the speed of dialing.

然而，贝尔系统推出的触摸式的语气，因为它增加的速度拨号。

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Entrance to an exclusive private preschool is a painful right of passage for thousands of upscale New York moms every year, kicking off with a mad rush of speed dialing early in the morning the day after Labor Day to secure applications before schools run out of them.

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