The existing channel driver that previously worked only with the old-style Google Talk application (not the browser plugin and not Google Voice) has been updated to work properly for inbound and outbound calling using both the Gmail browser plugin as well as directly via Google Voice PSTN numbers.
Yes.
No. They’re done over XMPP (Jabber/Jingle). Not SIP. Google has their Google Voice pricing outlined on their website. Presently, US-based calling, inbound and outbound, isn’t metered; but Google could change that at any time.
[quote=“km”]
I’m currently running FreePbx on Asterisk 1.6. Do i need to upgrade to get this functionality?[/quote]