Arc Pay by Phone

PixelGamezz - Archosaur

Hello! so i have a pre-paid plan with 20$ in it. (Airvoice) (pretty sure it shares the same network with atnt) anyways...i was wondering how it works. would it bill it seperatly? or take money strait from my prepaid plan. https://www.airvoicewireless.com/Shop.aspx i have the pay as you go (10$ a month).b:shocked