also: インターフォン · インタホン · インターホーン · インタフォン · インタホーン
Refers to an intercom system, commonly found in apartment buildings, offices, and homes for communication between rooms or at the entrance.
from English interphone
The apartment intercom rang.
I check visitors through the intercom.
The intercom rang, so I went to the entrance.
The visitor pressed the intercom and gave their name.
My mother answered the intercom and received the delivery.
They installed an intercom at the entrance of the apartment building.