NTT, LG and a host of others; and of course, venerable Palm-OS solutions from PalmOne. The cost of videoconference-capable mobile devices is higher in comparison to standard cellphones, and the premium-service cost of making video calls reflects the enormous investment carriers have made in 3G technology. The market for video- calling devices, whether mobile or fixed wire-line also has an inherent hurdle to Mobile Videoconferencing and Interactive Multimedia overcome in that people can make video calls only to other people who also possess video-capable devices. The growth of the market has been slow initially, but has grown to the point that it is now worthwhile for many more people to invest in new video-enabled mobile devices. To further encourage the purchase of newer and more powerful multimedia handsets, rapidly evolving technology offers devices with improved battery life, better video, enhanced audio and lower costs. Add to this the fact that carrier data services seem to become more affordable every month, the likelihood of calling another phone capable of making video calls can becomes more likely with each video-capable device sold. In an interesting market evolution, 2004 was the first year in which the sale of Smartphones exceeded Palm-Based PDA's and also the first year in which the number of internet-enabled mobile devices exceeded the number of internet-connected PC's. 2005 and beyond Smartphone sales are projected to be in the 100's of millions per year, making Smartphones the largest and fastest growing market segment of all the mobile video options by a huge margin. And, smart as they are, Smartphones are getting even smarter, even more feature-packed with on-board MP3 players, FM Radios, video applications and continually enhanced multi-media capture and manipulation capabilities. With the help of new carrier-based Session Initiation Protocol (SIP) features, Smartphones portend to pave a broad avenue for consumers and businesses to gain access to the benefits of interactive mobile applications