TM3402A modem issues
We have been having the same issues as described in this post:
Basically, internet/phone/tv work perfectly fine without any signal issue, and then the internet only will completely stop working. It's like we aren't getting a public IP address. Cycling power and resetting the modem/router eventually gets the internet to start working again. At this point we need to do it 2-3 times a day.
We have been through 3 completely different routers and 2 different modems (both TM3402As supplied by Cox) and this issue persists. Since we are seeing the issue with all these different setups, and that TV and phone continue to work, lead me to believe that maybe this model of modem has some issues. We only chose this router as it was the only one available that handles both phone and internet in a single unit.
Problem completely went away for a few weeks, today it's worse than ever. Was out all night, came back this morning after several resets. Died again a few hours later. No internet service for the last 3 hours.