What is a PBX?

PBX stands for Private Branch Exchange – which is basically a private telephone system within a company. A PBX works by connecting all the internal phones within a business to one external line – eliminating the need for multiple phone lines and thereby reducing overheads considerably.

As well as reducing the costs associated with providing an external line to every phone within a business, another benefit of using a PBX is that phone calls within the network – between different departments, say – is much easier, as each internal phone will typically have a four digit extension code that needs to be dialled.

PBXs used to be based on analog technology, and were basically automatic versions of the traditional manual switchboard. Nowadays PBXs have become more advanced and take advantage of VoIP technology to transmit telephone calls using the Internet Protocol – known as IP PBX.

Typically a PBX phone system will consist of:
•  Telephone trunk lines (SIP and ISDN) that terminate at the exchange
•  A computer to manage the system
•  A network of lines within the PBX system

Visit our PBX phone system page to see all the details of the BA Tech PBX system.