Just got my OBI110, and I loved how easy and painless it was the set it up for Google Voice.
There is something else I thought I would be able to achieve with it. Part of the reason why I kept my land line is in case there's a power/network outage, I'd still like to be able to fallback on it. Yet whenever I unplug the Obi, the line goes dead. And if I unplug the Ethernet cable to simulate a dead network, I still get a dial tone, but when I dial a number it just tells me there was no service.
Is there a way to accomplish fallback service when there's no power/network? I tried searching, but I'm still trying to learn all the terminology.