intercom system
noun1
A public address system
2
A system of speak back intercoms in a building.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun — 2 senses
A public address system
A system of speak back intercoms in a building.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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