I can't get Gizmo to stop picking up. If I use the Gizmo in number, voicemail picks up and if I use the SIP number via Ipkall Gizmo just announces voicemail isn't set up. If the 770 is out of range of a W-Fi, Gizmo just announces I'm not online. This doesn't work for my ap which is to simultaneously ring the 770 and my Vonage home phone. Basically the 770 is useless for call hunting and is a great example of a technology that hasn't been thought through for an application.