voice over Internet protocol: a technology or set of standards for delivery of telephone calls and other voice communications over the Internet, involving conversion of analog voice signals to digital form.
VoIP (voip, vē'ō'ī'pē') Pronunciation Key
Short for Voice over Internet Protocol. A protocol for transmitting the human voice in digital form over the Internet or other networks as an audio stream, instead of using traditional telephone lines. VoIP uses the Internet Protocol (IP), but is not limited to communication by computer—even phone-to-phone communication can be conducted using this technology.