An intercom telephone is a special kind of telephone that controls a
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intercom — [in′tər käm΄] n. a radio or telephone intercommunication system, as between rooms of a building … English World dictionary
Intercom — Call button redirects here. For call buttons provided to patients in a health care setting, see Nurse call button. Intercom system in the Pittock Mansion An intercom (intercommunication device), talkback or doorphone is a stand alone voice… … Wikipedia
Intercom system (school) — In a school, an intercom system is a kind of PA system used to make announcements during the school day. A school intercom system usually includes an intercom in each classroom, the hallways and other rooms of the school, and intercom call button … Wikipedia
telephone — I (New American Roget s College Thesaurus) v. call [up], phone, dial, get through to. See communication. II (Roget s IV) n. Syn. phone, private phone, extension phone, radiophone, radio telephone, car phone, cellular phone, pay phone, public… … English dictionary for students
Intercom — Interphone Un interphone/visiophone domestique Un interphone est un téléphone qui utilise un réseau interne[1] ; il n est donc pas connecté au réseau téléphonique. Il est souvent équipé d un haut parleur et permet des communications sur … Wikipédia en Français
intercom — A telephone apparatus by which crew can talk to one another within an aircraft … Aviation dictionary
intercom — n. colloq. a system of intercommunication by radio or telephone between or within offices, aircraft, etc. Etymology: abbr … Useful english dictionary
Business telephone system — Early model 464G Western Electric key telephone set A business telephone system is any of a range of a multiline telephone systems typically used in business environments, encompassing systems ranging from small key systems to large scale private … Wikipedia
Key telephone system — A key system or key telephone system is a multiline telephone system typically used in small office environments.Key systems are noted for their expandability and having individual line selection buttons for each connected phone line, however… … Wikipedia
Extension (telephone) — An extension telephone is an additional telephone wired to the same telephone line as another. In middle 20th century telephone jargon, the first telephone on a line was a Main Station and subsequent ones Extensions . Such extension phones allow… … Wikipedia
