I originally got a TracFone to get access to the Verizon network as that's all there was around my folks' place in Maine.

(BTW, TF sells both CDMA and GSM phones - but will only offer a CDMA one if you're in a CDMA-only area, or at least if you give them a zip code to one of those places. hint: Oquossoc, ME is one of those places.)

Rather than get folks to track yet another number for me, I just told everyone about my new single number to call (GrandCentral at the time). I *still* haven't gotten everyone over to that number - but that's how switching numbers goes.

I signed up for Gizmo at the same time, hooked that to a Linksys SPA2102 SIP/analog phone adapter at home (shows as a second line on our phones) which I *mostly* use for GV calls when I'm home.

It's all been working fine.

My only issue is that, to add a phone number to your GV phone list, you need to simultaneously have access to that phone and the internet. My folks have a phone that I'd love to direct GV calls to when I'm there (yes, there's CDMA, but it's not good reception) but there's no data, other then a modem, which makes receiving calls problematic.