They would send messages by field telephone to the code talker in the next group.

他们将通过现场电话向下一组的密码员发送信息。

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Now let's say you want to find the city for each company based on their telephone area code. In this case, you can run a query like this.

现在，假设希望根据每家公司的电话区号找到它们所在的城市。

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Your telephone service provider can tell you the code to turn off call waiting.

您的电话服务公司可以告诉您关闭呼叫等待的号码。

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So Nynex, hardly the most popular local telephone company in America, knew it was in for a scrap when it recently unveiled a plan to deprive some Manhattanites of their treasured 212 area code--arguably the only local telephone code that is recognised from Tokyo to Tomsk.

ECONOMIST: The sexiest code on earth

Kosovo still does not have an international telephone dialling code - and, unlike other Balkan countries, its citizens cannot travel visa-free to the European Union.

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It allows smartphone owners to make in-store purchases by typing in a telephone number and personal ID code at the cash register.

BBC: Barclaycard Quick Tap reader