ContributionsMost RecentMost LikesSolutionsRe: COX Cisco Modem causes internet to disconnect twice a day, 12 hours apart. did you ever get your problem resolved? i’ve been having the exact same issue for 2 months now, except my service drops randomly, sometimes for a couple of hours, a day, or every few days....only answer i get from cox is that it must be the router except that i’ve tested the router at different location and they both work perfectly....i mentioned to cox that ethernet port have light next to it that blinks green when working and orange when not, tech didn’t even know there were lights back there... Re: Modem not assigning IP address i’ve swap out 3 modems already. 2 routers have been tested at different location and both work perfectly. Re: Modem not assigning IP address only 1 splitter from street to house. i disconnected the cables not being used on splitter so pretty much just 1 cable all the way along the outside of the house thru to the input inside. cable was ran by cox tech when i started their service about 2 years ago and are in good shape as i can see it the entire way. i do not have any new electronic devices. my family use is very basic, ipad, internet tv, and that’s it. there are a quite a bit of people having the same issue when i search in forum and intnernt but there never seems to be a solution. i think the software in modem is corrupt. but then again, i’ve swapped out 1 older model and 2 same model modems with cox and still having issue. all the modems are from cox arris. Modem not assigning IP address I have been having internet connection issue as described in below post (copied and paste from another user as their problem is exactly same as mine and they have described it perfectly). I’m hoping someone can advise on a solution or cause of the problem. Multiple attempts at getting help from cox tech has been as waste of time, they have no clue and will only reboot the system from their side and say all looks good, must be the router. We have been having the same issues as described in this post: https://forums.cox.com/forum_home/internet_forum/f/internet-forum/24211/arris-tm3402-ongoing-problems 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 several times will eventually gets the internet to start working again after an hour or so. 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.