PBX Systems

Overview

A Public Exchange (PBX) is a device that routes phone calls. As it applies to Small Businesses, it is an appliance or server that routes incoming calls to various extensions in the office, and routes outgoing calls from the various extensions to the outside world. As they existed several decades (see picture on the right) a person was required to connect cables between a caller and a callee in order to connect the two. In the days of modern computing, connecting calls can be handled by a computer. And the computer can provide many more functions, such as Voicemail, Time Conditions, and Call Forwarding, and can connect callers and callees to these services.