Use GV Dialer to make free call with Google Voice anywhere.
GV Dialer will intercept your outgoing call; uses Google Voice to call you back and connect your call for free (in the US).
Flawlessly integrated into phone's contacts app.
Two-way contact filtering support.
GV Dialer can work with Gizmo5/Sipdroid/Fring or other VOIP to make free call.
#How to use? pls see website.