Make Free calls using Google Voice and asterisk

Folks from Nerd Vittles have come up with an in-depth Tutorial1, Tutorial2 on how to make free U.S calls using asterisk and Google Voice. Apparently, this little experiment started out because of the frustration with Gizmo5, which announced free unlimited Google Voice service last week, later retracted to plain old marketing tricks. Initially they started with free, unlimited U.S calls using Google Voice number and quickly morphed into 20 minutes, 3 minutes and then 2c per minute for Google Voice calls.

Hopefully if I get sometime this weekend, will play around with asterisk to configure my setup as mentioned in the article. More later.