He set the main intercom switch at a neutral position.

Kirk punched the intercom switch and asked what was wanted.

Bell jumped to his feet and turned the intercom switch.

He pressed an intercom switch and addressed the man in the chamber.

Then he reached out to his button board and depressed the intercom switch.

I hit the intercom switch again, this time a couple of buttons down from engineering.

Ramsey lifted his head, stared at the test board in front of him, the open intercom switch.

He heard the captain bring his hand down hard on the intercom switch.

I tested the intercom switch, found nothing wrong with it.

Finally, he leaned forward and pressed down the intercom switch.