PABX is an acronym for … Private Automatic Branch eXchange
is a private telephone exchange located at the subscriber and connected to the telephone network. it ties together telephones, fax and data systems in a company and connects these to the network.
The automatic telephone switching system within a private enterprise. Originally, such systems – called private branch exchanges (PBX) – required the use of a live operator. Since almost all private branch exchanges today are automatic, the abbreviation “PBX” usually implies a “PABX.”Some manufacturers of PABX (PBX) systems distinguish their products from others by creating new kinds of private branch exchanges. Rolm offers a Computerized Branch Exchange (CABX) and Usha Informatics offers an Electronic Private Automatic Branch Exchange (EPABX).
This device typically installed within an office to provide for connection and switching of the telephones in that office and the interfacing to the public telephone network. Common PABX systems include facilities for switchboard operators and may also be used to handle data traffic as well as voice.