How does the PBX system work?

 

If you've ever worked in an office, you've used a PBX, or Private Branch Exchange, system. PBX systems are used to route calls between extensions, and usually have various features like voicemail, call forwarding and conference calls. But how do they work?

PBX systems work by connecting calls between extensions using a central switching system. Calls come into the PBX on a trunk line and are then routed to the appropriate extension by the PBX switch. The switch will also connect calls between extensions so that employees can talk to each other.

The system is typically owned and operated by the business, and can be either analog or digital. 

Analog PBX systems are the older of the two types and work by having a physical connection between each phone in the system. Calls are routed through the PBX by a human operator, who physically connects the callers together.

Digital PBX systems are more modern, and use a computer to route calls. This type of system is often more flexible and can be easily expanded to the needs of the business

An IP PBX System makes use of digital phone signals as opposed to analog landlines. Updating to an IP phone means businesses can benefit from some more intuitive functions. While traditional PBX systems only have a certain number of internal extensions and outside trunk lines, with an IP business communications system, users can benefit from almost unlimited access in terms of adding extensions and trunks, making it a smarter choice for businesses looking for flexibility and scalability.

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