Cloud-based Private Branch Exchange (also known as cloud PBX, cloud-based PBX, or sometimes even virtual PBX) is a cloud telephone service that mimics traditional Private Branch Exchange while removing the inconvenience associated with it.
Companies use the PBX system (essentially a private telephone network) to manage incoming and outgoing calls to and from the organization. Originally, PBX systems were kept on company premises only. This meant that not only did businesses need to spend a lot of money on setting up and maintaining it, they also needed to invest in other communications solutions for employees who either work at different locations or whose jobs require constant mobility.
Eventually, VoIP-based PBX systems were developed. This mitigated the costs of managing and scaling traditional phone networks connected to landlines. But initially, this was still an on-premises solution that limited options for people who don't work in the office.
Cloud-based PBX was built on that original innovation. It moved the functions of on-premises PBX hardware to the cloud. This allowed workers to use their preferred internet-enabled devices with software downlaoded onto them to do their jobs, rather than being forced to stay at their desks just to use their work phone number.
Thanks to this, all businesses need to do today is to subscribe to a cloud-based telephone solution that provides the same services as traditional vendors plus advanced features and added benefits, including:
- Call forwarding
- Automatic call routing
- Fast and simple implementation
- Better value for money
- No expensive and cumbersome machinery to install and maintain
Although cloud PBX systems use Voice over Internet Protocol (VoIP) to work, the two terms refer to different things.
VoIP is the technology that allows you to make phone calls over the internet. VoIP calling uses Wi-Fi or Ethernet connections to transfer a bi- or multi-directional audio or video feed between devices. To make a VoIP call, you can use either a dedicated IP telephone or a software program (typically referred to as voip app, virtual phone, or softphone).
Cloud PBX uses VoIP to transfer call data. All cloud telephone systems use VoIP systems, but not all VoIP systems are cloud-based. A VoIP telephone service might still rely on in-office machinery to route calls, whereas a cloud PBX system carries out this task remotely.
People tend to use the terms "cloud PBX" and "hosted PBX" interchangeably. This isn't surprising - cloud PBX systems are certainly hosted by your cloud provider. But not all hosted systems are considered “true cloud” telephone solutions.
Hosted PBX can refer to any telephone system that is housed and made available to your business from a building or data center that is separate from your location. Cloud PBX, on the other hand, refers specifically to a multi-tenant PBX solution.
Rather than having to run up extra servers to meet demand, providers of multi-tenanted systems simply add more computing power and storage to their service.
Multi-tenant cloud PBX solves the challenge of scalability, allowing you to add as many users as you need to your plan.