ContributionsMost RecentMost LikesSolutionsRe: Cable modems that I can buy that are compatible with Cox Voice You can't purchase a modem that will support Cox voice. You can get those from Cox via rental or the one for phone only for free Re: Arris TM3402 It ships via UPS and it takes 2-3 days. They ship them out M-F. You can get a tracking number from Cox as well. Re: Shouldn't the modem be free? Cox will give you a modem for your phone service. The pano gives you both internet and phone but you don't have to only have one modem. Many people have a modem for internet only that they purchase. Cox has to give you a modem for phone service.