All you have to do is call on the house phone.

我只要做的就是拨个室内电话。

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Sorry, it's our house phone, not for outside line.

对不起，这是工作电话，不外借。

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There was a house phone on the convention mezzanine.

在会议厅夹层有一个内部电话。

www.translation-dictionary.net

Earlier in the day, the president spoke by phone with Russian President Medvedev, which the White House noted was the 14th direct meeting or phone conversation on the new treaty.

VOA: standard.2010.03.26

Remember the Hillary Clinton ad of the White House phone ringing at 3AM, asking whom would you want to answer.

FORBES: Move up http://i.forbesimg.com t Move down

And use a house phone.

FORBES: OMG...She Doesn't Even Tweet?

Women from all over America have jammed the coffee house's phone lines begging for the six-ounce bottles of blue.

ECONOMIST: Tremble, Coca-Cola, tremble