A:Answer Jo: I have Optimum for cable tv, phone, and internet and the Netgear router works great. The compatibility issues with service providers are related more to the type of modem used rather than the router, so the Netgear router should work with Mediacom. If you are replacing the router supplied by your provider, and not changing the modem, all should be well. If you are replacing the modem also you need to call Mediacom to see if your new modem is compatible with their system. Hope this helps.