Voice over Internet Protocol. A technology for transmitting ordinary telephone calls over the Internet using packetlinked routes. Also called IP telephony. Definition from www.anadigics.com/glossary/v.html

Voice delivered using the IP. It is a term used in IP TELEPHONY for a set of facilities for managing the delivery of voice information using the IP. In general, this means sending voice information in digital form in discrete packets rather than in the traditional circuit-committed protocols of the public switched telephone network (PSTN). A major advantage of VoIP and Internet telephony is that it avoids the tolls charged by ordinary telephone service. Definition from www.247access.co.za/pap/glossary.html