I don’t know how this works, but apparently you can make free phone calls with this
I’m going to try it out tonight at home.
Edit: yep tryed it out and its everything it says it is. Free landline calls in Australia, mobile calls are about 26c p/min, so I wont be doing that in a hurry. At the moment you can try it for free for a minute a call, but to get unlimited all you have to do i buy about $2 worth of credit.