1. Get free SIP service from IPTel (http://www.iptel.org/service).
2. Get a free phone number in the Washington area with IPKall (http://www.ipkall.com/).
3. Add your new IPKall number to your Google Voice account.
Now when someone rings your GV number it will call your IPKall number which will in turn call your IPTel SIP account.
[1] http://www.sipgate.com/ [2] http://forum.xda-developers.com/showthread.php?t=887131
1. Get free SIP service from IPTel (http://www.iptel.org/service).
2. Get a free phone number in the Washington area with IPKall (http://www.ipkall.com/).
3. Add your new IPKall number to your Google Voice account.
Now when someone rings your GV number it will call your IPKall number which will in turn call your IPTel SIP account.