I would also love to see SIP connectivity for Google Voice. That said, the discussion seems to center around the if, and not the why. I suspect that the reason

I would also love to see SIP connectivity for Google Voice. That said, the discussion seems to center around the if, and not the why. I suspect that the reason that Google hasn't offered SIP support already is regulatory: Some time ago, AT&T accused Google of violating telecom regulations by blocking access to certain high cost numbers[1]. Google was able to defend against the accusation by pointing out that they did not actually provide a telecom service, as usage of Google Voice required a normal phone line[2]. I suspect that if (once?) Google provides SIP support, this distinction can no longer be made. What would be the difference between Google Voice and any other SIP provider? [1]: http://www.att.com/gen/public-affairs?pid=14048&goback=group01&article=home http://www.att.com/gen/public-affairs?pid=14048&goback=g... [2]: http://googlepublicpolicy.blogspot.com/2009/09/response-to-at-letter-to-fcc-on-google.html http://googlepublicpolicy.blogspot.com/2009/09/response-to-a...