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

我只要做的就是拨个室内电话。

youdao

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

对不起，这是工作电话，不外借。

youdao

There was a house phone on the convention mezzanine.

在会议厅夹层有一个内部电话。

youdao

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

According to records maintained by Mr. Jordan's law firm, Ms. Lewinsky arrived at his office at 4:47 p.m. (815) White House phone records show that, at 4:57 p.m.

CNN

And use a house phone.

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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