And the captain had opened the intercom system all over the ship.

He was about to engage the intercom system when the door finally opened for him.

There are many types of wireless intercom systems on the market.

It was loud enough to be heard clearly over the intercom system.

Security cameras and an intercom system are part of the main building.

It was as if the crazy intercom system had made them up!

Nor could she just call him via the intercom system.

An officer spoke to them over the intercom system, explaining what was to happen.

There is an intercom system that a live human being actually answers.

An efficient intercom system always let us know the schedule.