What is a PBX Phone System?

PBX (Private Branch Exchange) is a private telephone network used within a business. The users of the PBX system can communicate internally (inside their company) or externally (with the outside world), using various different communication channels like VoIP, ISDN or analog. A PBX also allows for more phones than physical lines and supports free calls between users. It also provides features such as call transfers, voicemail, call recording, a voice menu, call queues and much more.

Original PBXs would have their own specific phones, this means that there wouldnt be a possibility to use these phones with another system. This means that we either are bound to the same system because changing system means also changing phones, which makes it expensive to change or that we are bound to the same supplier because the phones are only usable with the systems that the vendor supplies. Sometimes only within a particular range of systems.

Technology and time, however, have changed the landscape for telephony, with the introduction of Open-Standards-based IP PBX. The point of the "IP" means that phone calls are being handled using the Internet Protocol as the underlying method of transport.

PBX phone systems can be purchased as either hosted or virtual solutions as well as an on-premise solution allowing businesses to run and manage their own hardware.

With traditional PBX, we are typically restricted to the amount outside lines (trunks) and to a certain maximum number of internal telephone devices or extensiosn. Users of the PBX system share the outside lines for making external calls.

Making the change to an IP PBX brings along many benefits and opens up benefits to your business that you may not been aware of, allowing for almost endless growth when it comes to extensions and trunks, and supporting the use of more complex functions that are usually more costly and hard to implement with a traditional PBX.