VoIP has come a long way in just a few years. At last week's VoIP Developers Conference, an industry panel looked at the technology's future. The consensus: VoIP is going wireless. Michael Stanford, director of Intel's strategy group, noted that a huge market will emerge for dual-mode handsets that allow users to seamlessly roam between cellular and wireless broadband networks. Stanford also stated that "the writing's on the wall for wireline voice." He predicted that within three to five years, cellular services will "totally dominate" voice traffic. Article