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PBX

  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.


PBX

abbreviation for

  1. private branch exchange; a telephone system that handles the internal and external calls of a building, firm, etc


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Word History and Origins

Origin of PBX1

P(rivate) B(ranch) Ex(change)

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