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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.
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Origin
P(rivate) B(ranch) Ex(change)
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for PBX

PBX

abbreviation (in Britain)
1.
private branch exchange; a telephone system that handles the internal and external calls of a building, firm, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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PBX in Technology
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Related Abbreviations for PBX

PBX

private branch exchange
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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