A private telephone exchange which transmits calls internally and to and from the public telephone network.
a computerised system that manages an internal telephone extensions network
a local switch that performs a similar function to a switch in a PSTN, however it is does not use the PSTN, saving on costs and making communication in an office environment more efficient
a private switching system that provides communications between internal stations and exterior networks
a telephone switchboard, an electronic device, that connects telephone sets and telephone line to form one big system
This is a telephone switchboard.
PrivAte Branch eXchange. The telephone systems found in many offices, giving an extension for each telephone and a connection to the main telephone system. Also commonly referred to as PBX
Public Automatic Branch Exchange. The term used to describe an organisations privately run internal telephone system.
Private Automated Branch Exchange - see PBX
Public Area Branch Exchange. Telecommunication network switching station that connects telephones in an area with the wider telephone network.
A switchboard used by some companies to switch incoming telephone calls to the appropriate telephone extension within the company.
Private Automatic Branch Exchange
Private Branch Exchange. A telephone switch located on a customer's premises that primarily establishes voice-grade circuits (over tie lines to a telephone company central office) between individual users and the public-switched telephone network. The PABX also provides switching within the customer premises local area, and usually offers numerous enhanced features, including least-cost routing and call-details recording.
An automatic telephone switching system within a private enterprise.