VoIP:Voice Over Internet Protocol

VoIP is an acronym for Voice over Internet Protocol and is also referred to as IP telephony. VoIP is a technology that uses IP networks for the two-way transmission of phone conversations via the Internet, or private LANs (local area networks) and WANs (wide area networks). Calls may be made computer-to-computer, computer-to-phone, or phone-to-phone, using a VoIP service provider.

VoIP converts analogue voice signals to discrete digital packets that are transmitted over the Internet and then reconverted at the receiving end. You can connect to a VoIP network using a regular telephone with an ATA (analogue telephone adapter) which connects to your high-speed Internet connection usually through a router. There are also IP phones available that can be plugged directly into a router. If you are using a router for your home LAN, then your computer does not have to be on to make or receive VoIP calls. It's important to note, however, that your high-speed connection must be active. If your Internet service is down, your VoIP is down.

You can generally use VoIP to call anywhere in the world. It's becoming increasingly popular for International calls because of the low cost compared to regular long distance service. You can usually talk computer-to-computer at no cost. Costs for local and long distance calls will depend on your service provider.