I think I found a way of using Google Voice to call the US for free. One can open an account with a VOIP provider that offers Pay As You Go. One provider I know of is Future-Nine. Then one can get a free US number from IPKall and link it with the SIP account. Then one can use this number in GV to get calls forward to. Well an than there is this little inconvenient call button on GV. GV will call your US number and then the party you wish to call within the US for free.
I did not try exactly this solution as I have an official US number already. However, it worked with my current VOIP provider with my own US number.
Why do you need the IPKAll in between? Not sure about future nine, but with callWithUs you get a real US number for receiving 2000 minutes per month free.
Why do you need the IPKAll in between? Not sure about future nine, but with callWithUs you get a real US number for receiving 2000 minutes per month free.
I think that you are confused.
CallWithUs no longer offers US "DID" numbers to US residents.
And in any event, NONE of their DID's are free.
CWU is an excellent outfit, but they don't give out free US numbers.