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New modem doesnt have a phone jack

New Poster

New modem doesnt have a phone jack

Hey,

 

Was hoping some one could help me. I just bought a non xfinity modem and router. My current modem that is installed in the house is a xfinity modem. This modem has a phone jack which powers my house phone. The new modem I bought does not have a phone jack. How can I solve this problem ? I would like to use the new modem but I also need the house phone. Could I use a coaxil splitter and run the xfinity modem just for the phone line and then use the new modem for the internet ? Or is there some other way to use this new modem but keep my house phone working. 

 

Any advice would be great

 

Diamond Problem Solver

Re: New modem doesnt have a phone jack

Yes, you would need to use a splitter to have both but you also need to call them and tell them that you want to use / provision the old eMTA for voice service only and the new modem provisioned for internet.

New Poster

Re: New modem doesnt have a phone jack

Is fhere a way to get the home phone working with out using two modems ? Or is this the only way im going to get this to work ?

Diamond Problem Solver

Re: New modem doesnt have a phone jack

It's the only way..

New Poster

Re: New modem doesnt have a phone jack

Ok and if I use a coaxil splitter will I loose a lot of speed in my internet due to the splitter. I cant imagine the other modem would take much signal if its only being used for the house phone.

Diamond Problem Solver

Re: New modem doesnt have a phone jack

It should not have any affect unless the RF signal stats are borderline or are out of spec.

Problem Solver

Re: New modem doesnt have a phone jack

Hi Chuck,

 

I have a similar configuration. A docsis 3.1 modem without a phone jack and an old Xfinity gateway just used for my Comcast phone.  The two are connected by a splitter. I have gigabit speed on my Internet so no, you'll not lose any speed at all.  .  

 

You didn't say if your current Comcast modem is actually a gateway, that is a modem with a built in wireless router.  If it is, you'll want to make sure you turn off the radio signals on it.  

Diamond Problem Solver

Re: New modem doesnt have a phone jack


AlanD wrote:

so no, you'll not lose any speed at all.  .    


As stated, technically you *could* if the stats are marginal / out of spec...

New Poster

Re: New modem doesnt have a phone jack

My current setup is a regular comcast modem and a linksys router. I wanted to upgrade both. I was hoping to get a modem so I wouldnt have to rent the xfinity one any more and bump my internet to the blast speed. Does any one know of any high speed modems that have a phone jack ? I bought a Asus RT-AC5300 router and bought a ARRIS surfboard SB6190. When I went to install everything I realized It didnt have the phone jack. I'd really like to not have to rent the comcast modem any more so does any one have any suggestions of a standalone modem that is high speed for the blast internet ?

 

Problem Solver

Re: New modem doesnt have a phone jack

It's best to check with your local Comcast office.  Some areas do not allow customers to purchase their own modems with phone jacks, otherwise known as eMTA modems. They require you to rent them.

Diamond Problem Solver

Re: New modem doesnt have a phone jack

Standard spiel;

 

FWIW, there *may still* be one caveat to owning your own eMTA or gateway device that supports their phone service. YMMV. I always advise (until I'm told otherwise officially) that the first thing you should do is to call in or go to your local CC service center (the better choice) and inquire / confirm as to whether or not customer owned eMTA's (modems with phone support) are allowed to be used on the local system. Some local franchises still do not allow it and require you to rent one from CC. The personnel that work there seem to better know what the actual local franchise's policies really are than do support reps at the national 800 number.

If allowed, the only two devices available at retail that they will activate for service are the Arris TG862G and the Arris TM722G. The 862 is a combo cable modem / router / eMTA gateway device but it is a piece of junk. But it can be put in to bridge mode so that it acts only as a cable modem with phone support. You would the use your own high quality stand-alone router with it.

The 722 is an older eMTA that offers only 4 channel bonding capability so it won't be able deliver their fastest speed tiers like 150 and faster. They are hard to find anyway.

And see this for a new wrinkle;

https://www.dslreports.com/forum/r30992366-Equip-Retail-Arris-TM822G-eMTA-Now-Available-on-Amazon-ed...