A business telephone system is a multiline telephone system typically used in business environments, encompassing systems ranging in technology from the key telephone system to the private branch exchange.

What is a PBX system used for?

PBX stands for Private Branch eXchange, and has become a general term used to describe a business telephone system that offers multiple inbound and outbound lines, call routing, voicemail, and call management features.

What is a PBX system and how does it work?

How does a PBX system work? ... With a traditional or analogue PBX phone system, copper phone lines connect to the on-premises phone system, connecting to the PBX box within the office or business site. The PBX box then uses telephony switches to enable incoming calls to be directed to phones within the premises.