VoIP refers to voice over Internet protocol, uses the Internet for voice communication and visual. Transferred Unlike landlines, voice over IP in the details of IP packets through routers to their destination. VoIP solutions have a unique choice for communication over long distances, like the one created affordable and easily accessible. It is estimated that numbered VoIP users in the United States alone more than 24 million in 2008. VoIP services are also known as Internet telephony, telephony and broadband IP telephony.