VoIP stands for Voice over Internet Protocol, and how VoIP works is actually quite revolutionary because it streamlines the process of sending analog audio signals by converting them to a much easier to send digital form for transmission. One major advantage of VoIP and Internet telephony is that it avoids the tolls charged by ordinary telephone services that use the standard public switched telephone network. With VoIP you can make calls from any computer, which is connected to the Internet from anywhere. Similarly, if you are traveling, you can use your IP phone or adaptor to make calls from wherever you are. The Computer-to-Phone service enables you to use your computer to call any landline phone. Depending on the service, one way to place a VoIP call is to pick up your phone and dial the number, using an adaptor that connects to your existing high-speed Internet connection. The call goes through your local telephone company to Voip providers. To use this service, you need a computer with a sound card, a microphone and speakers or headphones. Most VoIP uses a transport layer called User Datagram Protocol (UDP) which is faster than TCP. A commonly used application layer is called Real-time Transmission Protocol (RTP) – originally developed for delivering audio and video over the Internet. An IP address can be static or dynamic. A static address always stays the same, but the majority of IP addresses nowadays are dynamic – this means that you are assigned a different IP address each time you connect to the Internet. See VoIP Provider s pages and read voip review. With many VOIP plans you can talk for as long as you want with any person in the world (the requirement is that the other person has an Internet connection. Free calls. You can also talk with many people at the same time without any additional cost. Some VOIP services don’t work during power outages and the service provider may not offer backup power. Not all VOIP services connect directly to emergency services through 9-1-1. VoIP has a lot of advantages over the traditional phone system. The main reason for which people are so massively turning to VoIP technology is the cost. What makes calls free or paid really depends on many factors, including the nature of the call and the services offered. You only have to choose one depending on the nature of your communication and needs.