How a cloud PBX works
Calls are carried as data over your internet connection to the provider's servers, which handle routing, voicemail, queues, and the connection to the public phone network. Users register softphones, mobile apps, or IP phones to their extensions, so a call can be answered on any of them. Because the PBX lives in the cloud, a new employee or office is a configuration change, not an installation.
Typical features
- Auto attendant and IVR menus for routing callers
- Ring groups, call queues, and business-hours routing
- Voicemail with email delivery
- Call recording, transfer, hold, and parking
- Desktop, mobile, and web softphones
- Reports and real-time dashboards
Cloud PBX vs on-premises PBX
- Up-front cost: a cloud PBX has no hardware purchase; an on-premises system needs equipment and installation.
- Maintenance: the provider handles updates and uptime; on-premises, your team or a contractor does.
- Scaling: add users and locations in minutes in the cloud; on-premises means adding capacity and cabling.
- Remote work: cloud users connect from anywhere; on-premises typically needs VPNs or extra equipment.
- Control: on-premises gives physical control of equipment; cloud trades that for convenience and resilience.
What to check before you move
Test your internet connection for stability, jitter, and packet loss at the busiest time of day, and plan for a backup connection if phones are critical. Decide which devices people will use, check that your existing phones are supported, and plan number porting early, since it can take longer than the rest of the project.
Common questions
- Do I need special equipment for a cloud PBX?
- Only a reliable internet connection and a device to talk on: a computer, smartphone, or IP phone. There is no PBX hardware to install on site.
- Is a cloud PBX the same as hosted PBX?
- In everyday use the terms mean the same thing: a PBX that is hosted and operated by a provider and accessed over the internet.
- Is a cloud PBX secure?
- Reputable providers use encryption, access controls, and monitoring. You should still enforce strong passwords, restrict admin access, and review international calling settings.
- Can I keep my existing phone numbers?
- In most cases numbers can be ported from your current carrier to a new provider. Porting timelines and requirements depend on the carrier and the country.