http://googlevoiceblog.blogspot.com/2010/06/google-voice-for-everyone.html
Been using it for years. Transitioned my main phone to the GV number about two years ago. Works fantastic.
If you're lucky enough to have grabbed a Gizmo account, you can use the software for free incoming and outgoing calls on your PC.
I'm sure you could do it on a phone, but I have 400 minutes I never get close to using, so I have not tried it. But SIPdroid and/or sopsorcery should do it for you.
Edit: 10 reasons to love Google Voice! http://brunosan.blogspot.com/2010/06/10-reasons-i-love-google-voice.html
Been using it for years. Transitioned my main phone to the GV number about two years ago. Works fantastic.
If you're lucky enough to have grabbed a Gizmo account, you can use the software for free incoming and outgoing calls on your PC.
I'm sure you could do it on a phone, but I have 400 minutes I never get close to using, so I have not tried it. But SIPdroid and/or sopsorcery should do it for you.
Edit: 10 reasons to love Google Voice! http://brunosan.blogspot.com/2010/06/10-reasons-i-love-google-voice.html