Freshcaller is another popular cloud-based PBX phone system ... Read how we test, rate, and review products on TechRadar.

A VoIP-based PBX system that is hosted by a service provider over the Internet. All phone features such as auto attendant, voicemail and conference calling are handled in the cloud PBX datacenter.

Why settle for an ancient, analog PBX? The best voice over IP (VoIP) services we've tested deliver enterprise-grade phone system features for a small-business-friendly price.

RingCentral supports a hybrid-PBX deployment that allows internal ... Check out my full RingCentral review for more details. Cloud Connector is RingCentral’s SIP trunking and cloud transition ...