Penguinbait: Thanks for the tip. In fact by following your instructions I was able to receive phone call with 770 from my Vonage home phone! However, the same did not work when I tried to call from my cell phone... In Windows I don't recall seeing the invitation at all, the Gtalk always rings and I can pick up the call without authorizing. Both of my phones (home and cell) are in my contact list so they should be "authorized"?

Have you guys noticed that the mic sensitivityof 770 is set at max at first before you start talking? In my case the 770 mic picks up all the background noise until I start talking and the (automatic) gain control sets the mic gain to a correct level...