Like many other developers with a history in telecom, I learned that when you build a telephone switch, regulations say it must provide dial tone in 40ms, a difficult requirement to achieve.

像许多常年混迹于电信行业中的开发人员一样，我所学习到的是，若实现一个电话交换，则一定要在40毫秒内发出拨号音，这是一个难以实现的需求。

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I turned the dial of the telephone.

我拨了电话的号码盘。

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I will be hysterical whose name I will call out and whose Telephone I will dial.

会歇斯底里的喊出谁的名字，会拿出手机给谁打电话。

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