It does indeed work great. I leave for Costa Rica on Thursday, and I've used Gizmo on the N800 to make all my calls ahead. The calls sounded about on par with a cell phone, which is fine by me since that's all I use, even at work.

I am having one problem, for which I opened a ticket. DTMF isn't working. My PBX here at work isn't responding to my keypresses, nor is my bank's telephone banking system. Both work from a landline. (I haven't tried it from another gizmo install.) Anyone else seeing this?