PBX - Private Branch Exchange




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PBX stands for Private Branch Exchange, though sometimes it is referred to as PABX (private automatic branch exchange), EPABX (electronic private automatic branch exchange) or CBX (computerized branch exchange). 

A PBX is a private telephone network used within a business or organization, as opposed to a regular telephone carrier.  PBX users share a number of outside lines to make phone calls externally to the BBX.  Companies use PBX because it is much cheaper than connecting a separate telephone line to each separate phone.

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