BT – Your guide to voice over IP (VoIP)

A VoIP (Voice over Internet Protocol) phone system gives you everything a traditional PBX does but with one crucial difference: it’s hosted in the cloud. VoIP technology converts your voice into a digital signal, allowing you to make calls over the internet.

That means you spend less money on hardware and maintenance. BT Business VoIP services include our cloud-based systems; BT Cloud Phone; BT Cloud Voice; and BT One Phone; and our on-premises systems: Avaya IP Office and MiVoice Business.


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