I think it's either voip over wifi or voice of cellphone network. What it sounds like to me is that this phone has an 802.11 chip in it and can be used over a

I think it's either voip over wifi or voice of cellphone network. What it sounds like to me is that this phone has an 802.11 chip in it and can be used over a data network. The bit about not needing a wireless carrier seems to suggest that.