Page "Voice over WLAN" Paragraph 9

One of the attractions of VoWLAN is that it uses widely available WiFi and as such can be used without involving a service provider ( e. g. running a Skype client on a laptop connected to the internet over WiFi ).

However, there are network operators who use this technology as part of their service offer, typically using Unlicensed Mobile Access to deliver voice service at home.

Example's include T-Mobile @ Home in USA, or Orange's UNIK service in France.