Voice Over IP in the WiFi Network Business Models: Will Voice Be a Killer Application for WiFi Public Networks?

The stunning growth of WiFi networks, together with the spreading of mobile telephony and the increasing use of Voice over IP (VoIP) on top of Internet, pose relevant questions on the application of WiFi networks to support VoIP services that could be used as a complement and/or competition to the 2G/3G cellular networks. Voice has been, is, and will surely be one of most important killer applications for many of the telecommunications networks. Till now, WiFi networks are centred on Internet access services, not covering a significant market for voice services.