Voice over IP uses Internet Protocol, an essential building block of the internet. IP telephony is a massive innovation from the century-old telecommunications system. For phone calls, the conversation is exchanged using small data packets. The internet can send these data packets around the world in less than a second. For internet telephony, these packets travel between your phone and a VoIP provider.
Your phone connects to your switch or router in your Local Area Network (LAN).
When you dial a telephone number, your IP phone tells your VoIP service provider to call the other party.
Your VoIP service establishes the call and exchanges data packets from your IP phone.
Your VoIP phone converts these digital signals back into the sound you can hear.
Voice over Internet Protocol bypasses the telephone company entirely. Wherever you have a broadband internet connection, you can use VoIP. It’s a significant upgrade from an analog phone system.
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