U4VOIP is the division of U4Corp that will provide Voice over Internet Protocol (VOIP). VOIP uses the power of the internet to make and receive phone calls. If you have a high speed internet connection, then you can use U4VOIP. You can use your regular touch tone phone. Much like sending an email over the internet, U4 does the same thing with your voice. The best part of using U4VOIP is the additional functionality that VOIP provides.