Services over Internet Protocol: Voice is just the beginning… - WITSA

Definitions• Internet Telephony: “In the beginning, Internet telephony simplymeant the technology and techniques to let you make voice phone calls –local, long distance, and international – over the Internet using yourPC…the definition of Internet telephony is broadening day by day toinclude all forms of media (voice, video, image), and all forms ofmessaging and all variations of speed from real-time to time-delayed.”• IP Telephony: (As defined by Microsoft) “IP Telephony is an emergingset of technologies that enables voice, data, and video collaboration overexisting IP-based LANs, WANs and the Internet. Specifically, IP Telephonyuses open IETF and ITU standards to move multimedia traffic over anynetwork that uses IP (the Internet Protocol).”• Voice over IP (VoIP): “The technology used to transmit voiceconversations over a data network using the Internet Protocol. Such datanetwork may be the Internet or a corporate Intranet, or managednetworks typically used by long and local service traditional providers andISPs that use VoIP.”Source: Newton’s Telecom Dictionary, 18 th edition17Copyright 2004 AT&T