Comcast will not let you use your own equipment for voice (MTA) service. When you return their modem they will give you an eMTA (which is basically just a cable modem with an analog phone adapter ...
If you’re not already keen on the fact that owning your own modem and router will save you money in the long run, well, then you will be after this ARRIS SB8200 review. This review isn’t intended to ...