unw and voip

http://www.netgear.com/products/details/SPH101.php

When intel developed chips involve WiMax capabilities surely UNW is going to have huge potential.
The above device is only WiFi Enabled, but in time a WiMax alternative should be available?

I believe this is a big prosect for UNW, allowing consumers to have all devices linked to one account, allowing phone calls to be conducted like today's conventional cellular networks....

Thoughts??