Private Automatic Branch eXchange


(PABX) A telephone exchange operated within an organisation, used for switching calls between internal lines and between internal and PSTN lines. In contrast to a PMBX, a PABX can route calls without manual intervention, based entirely on the number dialed. Not all PABXs can route external calls to internal numbers automatically however.

Last updated: 1998-08-07

Nearby terms:

privatePrivate Automatic Branch eXchangePrivate Branch Exchange

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