Private Branch Exchange

<communications>

(PBX) A telephone exchange local to a particular organisation who use, rather than provide, telephone services. The earliest PBXs were manual (Private Manual Branch EXchange, PMBX) but are now more likely to be automatic (Private Automatic Branch eXchange).

Last updated: 1997-06-25

Nearby terms:

Private Automatic Branch eXchangePrivate Branch Exchangeprivate key

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