PBX (Private Branch Exchange) - Definition
In the field of telecommunications, a telephone exchange or telephone switch is a system of electronic components that connects telephone calls.
A Private Branch eXchange (PBX) is a telephone exchange that serves a particular business or office, as opposed to one that a common carrier or telephone company operates for many businesses or for the general public.
PBX (Private Branch Exchange) - Synonyms
Private Branch Exchange; PBX; Private Automatic Branch Exchange; PABX; Electronic Private Automatic Branch Exchange; EPABX