How is “phone in” used?

In Clue (1985), one line is: “But I think there's a phone in the lounge.”

Which movie is “phone in” from?

The clip at the top of this page is from Clue (1985).

to make a telephone call to the place where you work; to make a telephone call to the place where you work in order to give sb some information

Heard in 20 movies

1
to make a telephone call to the place where you work
Three people have phoned in sick already this morning.
2
to make a telephone call to a radio or television station
Listeners are invited to phone in with their comments.
3
phone sth inBritish
to make a telephone call to the place where you work in order to give sb some information
I need you to phone the story in before five.

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

But I think there's a phone in the lounge.

Said in 8 films · #1