Firstly, what actually is VOIP?
VoIP technology represents a class of telecom services. Most people think of VoIP as an alternative telephone, which it is. But it’s so much more than that.
VoIP refers, generically, to modern voice-and-video services provisioned over internet-connected networks. It’s not a specific product or service. With VoIP, you not only obtain the full range of voice-to-voice services (call waiting, conference calling, etc.) but also video calling, video-conference solutions, digital whiteboards, and voicemail services.
Apart from the under-the-hood wiring, VoIP differs from PSTN in one other major way. A PSTN connection terminates to a unique phone jack that’s identified by a telephone number. A VoIP connection isn’t tied to a location; instead, it’s identified by a Session Initiation Protocol address (like an email address, but for VoIP services)
So, what are the benefits?