Popular Google telephony which places free calls in US / Canada the Google Voice now is offering inbound SIP addresses or disruptive telephony ... the Google's decision to shut down Gizmo 5 is more relevant at the point : )
... So how to make phone calls to any Google Voice number for free directly using a SIP account?
Free SIP to Google Voice calling work like as:
Seems that Google Voice might have associated SIP URI so GV calls could be placed, and the form of SIP URI should be like this:
+1aaabbbccc@sip.voice.google.com
So bye - bye expensive call minutes, Google Voice VOIP is evolving!
Also:
http://www.androidpolice.com/2011/03/07/goodbye-voice-minutes-first-signs-of-google-voice-voip-emerge/
http://truvoipbuzz.com/2011/03/make-unlimited-sip-calls-to-google-voice-number-tutorial/
