private branch exchange


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Related to private branch exchange: PABX, Private Automatic Branch eXchange

private branch exchange

A telephone system within an institution or business that can only be used by the people inside that establishment. There was an issue with the private branch exchange this morning, but we hope to have the phones working again shortly.
See also: branch, exchange, private
References in periodicals archive ?
An IP private branch exchange (PBX) requires skills to manage, something a lot of SMEs simply cannot afford, hence they're increasingly looking at IP Centrex as a way to benefit from lower operational costs without the management headache," said Besorai.
As they migrate to these offerings, however, they need to securely connect their IP Private Branch eXchange (PBX) and other SIP-based systems - like Microsoft Office Live Communications Server - between sites or back to their IP service provider.
The new ARA-1 extends the coverage and capability of an existing SIP private branch exchange (PBX) by allowing the interface of land mobile radios (LMR) to the system.
The vulnerabilities, if exploited, could lead to complete denial of office telephone or Internet services in environments where Asterisk private branch exchange (PBX) is in use.
TeamSpirit(TM) Voice Engine provides sophisticated conferencing features and ease of integration with standard based and proprietary enterprise instant messengers (EIMs), application and document sharing tools as well as with enterprise hardware infrastructure - media gateways (MGs), IP based private branch eXchange (IP PBXs), and other products.
With built-in virtual private network (VPN) hardware encryption and acceleration, IP communications, voice mail and auto attendant solution, Cisco ISRs can effectively replace a Private Branch Exchange (PBX) in the small/medium/branch office.