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Meaning of private branch exchange | Babel Free

Noun CEFR C1

Definitions

A telecommunications switching system, physically located at a customer's place of business, that provides internal communication between users and also access to outside (trunk) telephone lines.

CEFR level

C1
Advanced
This word is part of the CEFR C1 vocabulary — advanced level.
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See also

private brand private candidate private car private cost private detective private dick

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