Welcome to Xfinity Help & Support Forums
Find solutions, share knowledge, and get answers from customers and experts

New to the Community? Start here.

5,843,032

members

1,299

online

36,323

topics

Top

Okay/Legal to Use Two Modems?

ANSWERED
Regular Contributor

Okay/Legal to Use Two Modems?

My house has two separate co-axial cable connectors coming into the house, at opposite ends of the house. I have, at various times, used one or the other to connect my modem.

 

I'm wondering if I could use both connectors at the same time. I would have to buy another modem, of course, but having two modems at opposite ends of the house would mean that my wireless router wouldn't have to service the whole house. As it is, the wireless signal has to pass through plenty of walls and other obstacles.

 

I would use one modem for my HDTV and the other modem for my wireless router.

 

Is this a feasible setup? And is it legal...or would I have to pay Comcast for the use of another line? The two connectors seem to be part of the same line going from the street to my house because, as I mentioned, I have used one or the other at various times with no trouble.

Accepted Solution

Re: Okay/Legal to Use Two Modems?

[Replied to you but addressed to all.]

 

I agree that it makes no sense to pay an extra fee every month; better to make the up-front investment. Will investigate range extender/more powerful antenna and powerline networking. Thanks to all.

View answer in context
Cable Expert

Re: Okay/Legal to Use Two Modems?

Technically, it's feasable, but Comcast only allows one modem per account.




Community Icon
I am not a Comcast employee, I am a paying customer just like you!
I am an XFINITY Forum Expert and I am here to help. For information on the program click here.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark a Best Answer!solution Icon
Community Icon
I am not a Comcast employee. I am a paying customer just like you!
I am an XFINITY Forum Expert and I am here to help.
We ask that you post publicly so people with similar questions may benefit.
Was your question answered? Mark a Best Answer!solution Icon
Community Icon
I am not a Comcast employee.

Was your question answered?
Mark an Answer!solution Icon

Contributor

Re: Okay/Legal to Use Two Modems?

I believe also that unless you use a router (hardwired or wireless) each modem will need their Mac Address put into the system. So if they do charge for an extra modem that would be when you can find out for sure.

Regular Contributor

Re: Okay/Legal to Use Two Modems?

So to stay within Comcast's TOS I would need to pay a monthly charge for an extra outlet?

Cable Expert

Re: Okay/Legal to Use Two Modems?


Bulldog99 wrote:
...

I would use one modem for my HDTV and the other modem for my wireless router.

...

Why would you use a modem for the TV?




Community Icon
I am not a Comcast employee, I am a paying customer just like you!
I am an XFINITY Forum Expert and I am here to help. For information on the program click here.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark a Best Answer!solution Icon
Community Icon
I am not a Comcast employee. I am a paying customer just like you!
I am an XFINITY Forum Expert and I am here to help.
We ask that you post publicly so people with similar questions may benefit.
Was your question answered? Mark a Best Answer!solution Icon
Community Icon
I am not a Comcast employee.

Was your question answered?
Mark an Answer!solution Icon

Frequent Visitor

Re: Okay/Legal to Use Two Modems?

Perhaps it's an internet-enabled TV?

 

Even if you could do it, I wouldn't.  Rather then paying Comcast every month to have a second modem you could spend some money upfront.  Look into wireless extenders.  Netgear and Dlink sell them for less than $100.    If you really want hardwired then look into ways to run ethernet cable from your router to your TV or whatever.  Either way, I'd rather spend some time and money up front ONCE than have to pay a reoccuring fee.

Cable Expert

Re: Okay/Legal to Use Two Modems?

I am a big believer of powerline ethernet adapters for uses like this when the ethernet can't be run.  Better than any wireless solution as long as the wiring in  the home is up to the task.




Community Icon
I am not a Comcast employee, I am a paying customer just like you!
I am an XFINITY Forum Expert and I am here to help. For information on the program click here.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Mark it as an accepted solution!solution Icon
Community Icon
I am not a Comcast employee. I am a paying customer just like you!
I am an XFINITY Forum Expert and I am here to help.
We ask that you post publicly so people with similar questions may benefit.

Was your question answered? Mark it as an accepted solution!solution Icon
Community Icon
I am not a Comcast employee.

Was your question answered?
Mark it as a solution!solution Icon

Regular Contributor

Re: Okay/Legal to Use Two Modems?

[Replied to you but addressed to all.]

 

I agree that it makes no sense to pay an extra fee every month; better to make the up-front investment. Will investigate range extender/more powerful antenna and powerline networking. Thanks to all.

Contributor

Re: Okay/Legal to Use Two Modems?

There was one time I used a second modem. Was at a place where I rented a room. Comcast service provided. Ran the coax from to my room, and I did recieve the TV channels, which meant that the internet was there also.

 

Plugged in my router and my cable modem that I had bought when I had the service in my name prior to moving. When I tried to connect I kept getting that window saying to join comcast. FIgured it would not work. They did not even have my Mac for the modem in the system.

 

Tried for two days. Then an idea came to me. Never thought is woould work. What I did was change my DNS from Comcast dns servers to AT&T dns servers. And was I shocked. It actually worked and I was online. Never had any issues. One funny thing happened. My landlady lost her connection for like 5 hours. Me? I was hopping around the net as always and no issues.

 

I doubt that it would do that anymore. No reason for me to even try. But it is a true and funny story that did happen.

Regular Contributor

Re: Okay/Legal to Use Two Modems?


i-am-nerdburg wrote:

Technically, it's feasable, but Comcast only allows one modem per account.



You can have two modems on one account, however you have to pay the regular monthy charge for that second modem.

Connection Expert

Re: Okay/Legal to Use Two Modems?


scottryanmead wrote:

You can have two modems on one account, however you have to pay the regular monthy charge for that second modem.

This is not true for all market areas across the board..




Community Icon
I am not a Comcast employee, I am a paying customer just like you!
I am an XFINITY Forum Expert and I am here to help. For information on the program click here.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark a Best Answer!solution Icon
Community Icon
I am not a Comcast employee. I am a paying customer just like you!
I am an XFINITY Forum Expert and I am here to help.
We ask that you post publicly so people with similar questions may benefit.
Was your question answered? Mark a Best Answer!solution Icon
Community Icon
I am not a Comcast employee.

Was your question answered?
Mark an Answer!solution Icon

Contributor

Re: Okay/Legal to Use Two Modems?


JayInAlg wrote:

I am a big believer of powerline ethernet adapters for uses like this when the ethernet can't be run.  Better than any wireless solution as long as the wiring in  the home is up to the task.


That is one choice, but you can get a MoCA that simply attaches to the cable and can be setup with the router.  You will have internet wherever the cable goes.

Cable Expert

Re: Okay/Legal to Use Two Modems?

I am a big beliver of MOCA adapters too, they are too complex for many, as many don't know how their coax runs in the house.




Community Icon
I am not a Comcast employee, I am a paying customer just like you!
I am an XFINITY Forum Expert and I am here to help. For information on the program click here.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Mark it as an accepted solution!solution Icon
Community Icon
I am not a Comcast employee. I am a paying customer just like you!
I am an XFINITY Forum Expert and I am here to help.
We ask that you post publicly so people with similar questions may benefit.

Was your question answered? Mark it as an accepted solution!solution Icon
Community Icon
I am not a Comcast employee.

Was your question answered?
Mark it as a solution!solution Icon

New Poster

Re: Okay/Legal to Use Two Modems?

Not true nerdberg - you can have another modem. When I did it some time ago I was charged for the second Mac address. When you sign up for Internet service, the salesperson will also ask if you want to use more than one modem.
Xfinity Events:
WATCHATHON 2018... See More
Discussion stats
  • 13 replies
  • 65982 views
  • 0 kudos
  • 10 in conversation