1. a manually or automatically operated telephone facility that handles communications within an office, office building, or organization and that is connected to the public telephone network.

Origin of PBX


Words Nearby PBX

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use PBX in a sentence

British Dictionary definitions for PBX


abbreviation for(in Britain)
  1. private branch exchange; a telephone system that handles the internal and external calls of a building, firm, etc

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