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Help with setting up own equipment with Comcast? - Thanks!

1073 Views 3 Replies 4 Participants Last post by  plodr
Hi There -

I currently have the "Xfinity Triple Play" with comcast - cable tv, internet and VoIP phone.

I want to replace the current all in one telephony modem/router with my own set up.
As I understand it - the set up currently works as such...

Cable comes into house is split - one goes to cable box the other goes to All in One modem/router.
Phone is plugged into back of modem/router for VoIP.

It's simple but it there's a a few problems: 1- the modem/router is crap. WiFi drops out consistently as do wired connection and phone. I have to reach behind a cabinet and switch it on and off from power strip as many as 10x a day (I often work from home). Futhermore this is the second one. They keep getting bumps. Not as in they fall down and get broken but as in a bump appears on the side as if the device has melted and expanded from the inside out. 2- It means I'm stuck being a mobile hotspot for comcast. I wouldn't mind it except the home WiFi network is on the 5G band and the hotspot is on the 2.5G band. I swear (i know it sounds crazy) that when I have the 5G band on it gives me a massive headache (I've actually tried turning it on and off). So I keep it off. I would like to keep the home network on a 2.5G band.

So how should I go about setting this up? I'm guessing that I want to take the cable line that goes into the modem/router and plug it into a stand alone modem (I have a SURFboard SB6141 that's compatible) - connect that to a multiple port switch that will then connect separately to a WiFi router, to my desktop and lastly to a Analog Telephone Adapter, which then plugs into the phones?

My main issue has to do with the phone line? Do I need a telephony modem, or will an adapter work on the other side of the modem I already have? Which of either would work and where wold I get them? (Comcast is of course, no help here).

Sorry for the lengthy post - thanks so much for reading and hopefully somebody can help point me in the right direction!

Thanks so much
- Mike
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but as in a bump appears on the side as if the device has melted and expanded from the inside out.
Is it overheating from insufficient ventilation? Overheating could explain the outages as well as the "bumps."
My main issue has to do with the phone line? Do I need a telephony modem, or will an adapter work on the other side of the modem I already have? Which of either would work and where wold I get them? (Comcast is of course, no help here).

Sorry for the lengthy post - thanks so much for reading and hopefully somebody can help point me in the right direction!

Thanks so much
- Mike
no you will need a MTA modem for your phone service with Comcast. I am not sure if Comcast allows you to buy one though. The ISP I worked for did but had to come from the manufacturer. Second hand ones were not allowed on the system (just in case it as Allen from another ISP or something to that effect)

Check with Comcast if you can buy your own that will work with their system. If you can buy one without the wireless built in. I believe they use arris and/or Cisco modems. If it's arris, then any modem that has the model number starting TM (I think 722 is the latest model) should work as long its docsis 3.0.

As to the bumps, that certainly seems like it's overheating as mentioned. Where does the modem sit right now?
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