a cloud phone systme is hosted and maintained in the provider’s data center, not at your office, and is delivered through your internet connection. It features a hosted PBX capability, which has the same routing and calls management features of a traditional PBX while using voice over IP (VoIP) to facilitate calls over the internet. It also has other capabilities that traditional office phone systems don’t or can’t offer at affordable prices, like a long-distance calling. This cloud solution is often offered as a service, so smaller businesses can subscribe to it instead of investing heavily in an expensive on-premise system.shared PBX in the cloud.