ContributionsMost RecentMost LikesSolutionsRe: New phone modem doesn't work. IT WORKS!! The light is now lit and a phone plugged into the modem gets a dial tone and can dial out. Please cancel the tech's appointment. Thanks, F1937 Re: New phone modem doesn't work. Techie is coming out tomorrow afternoon. I'll let you know what happens. Re: New phone modem doesn't work. I dunno. I have never had a Cox phone until I got a better deal WITH a phone that I would WITHOUT one. I am beginning to regret that decision. Re: New phone modem doesn't work. The light on the front is in the shape of a telephone. It is not lit. You're right it was a free modem, if you don't count the cost of gas and the time to return the old modem to Cox, and the time spent trying to get it to work as a modem, and the time now being spent trying to get the phone part to work. Absolutely free!! New phone modem doesn't work. Last week, we bought a new phone modem - Arris TM 3402A. This week I tried to connect a phone to it. No anything. No dial tone. No light on the front of the modem. The phone I used to connect to the modem works when connected to a land line jack.