Another recent addition to VoIP technology is mobile voip of mvoip. The name is quite self-explanatory. Mobile VoIP is term used to describe the delivery of VoIP services via a a mobile handset that is connected to Wi-Fi, WiMAX or 3G cellular networks. The delivery of services will be handled by a third-party service provider.

Although still nascent, according to a recent Frost & Sullivan report (Impact of mobile VoIP on Next Generation Cellular Networks., mobile VoIP is poised to become the principal transport for various access technologies. It might even end up threatening traditional telecom.

At the end of 2008, approximately $605.8 million of mobile VoIP revenues were generated in North America, Europe, Asia Pacific and Latin America. This according to the report, is expected to grow to $29.57 billion by 2015.

However, study points out that many cellular operators have prohibited the use of mobile VoIP over their cellular networks, with some imposing a surcharge to avoid cannibalization of their circuit-switched voice revenue streams. Moreover, cellular operators face intense competition from the more popular Web-based VoIP alternatives that are permeating the mass market.