Some brands default to only connecting on demand.
Telo with 2 Handsets, a Linx, and a Safety Phone
Telo2 with 2 Handsets and a Linx
Have you tried a new ethernet cable?
Have you tried pinging vpn.ooma.com through the home port? What is the behavior before and after Ooma changes states?
If your Ooma can go blue and you can make phone calls, then it goes red, more likely than not something is causing packet delivery problems, though it can be other causes as well.
I just want to say that these guys here are really smart and they'll fix you up. I don't know what I would have done without their help, especially Sfhub who stuck with me through it all. Now that I know what I know, I'd say swap out or double check every bit of wiring from your modem to your Telo. If you've got the same problem I had, it's in those wires somewhere. And while it may not help much, consider yourself lucky that you only have to wait 30 minutes to see if it works -- mine didn't blink out for 5-6 hours. Waiting for that to happen made the process much longer. Hang in there.
1) Cycle Power - No effect
2) Replaced Cable Modem - No effect on Ooma - Doubled D/L & U/L speeds tho
3) Factor Reset - No effect
4) Call Comcast and have them add 188.8.131.52 to their DB. - No effect. Not sure why it would because the Ooma works initially. Also my friends have an Ooma and Comcast and theirs works fine.
5) Changed set-up to Modem -> Ooma -> Router - No effect.
6) Changed the MAC address of the telo to "built-in" - No effect.
I'm a little pessimistic about the cable since I've tried two of them but I'll try another. I agree tho, it seems it has to do with packet loss somewhere along the way.