Question about DSL and ethernet/phone ports.

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Wei3he

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Dec 1, 2015
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Hello I have a silly question.

If I have DSL, that is plugged into a phone jack on the wall and the internet is working fine. Then in another room, there's another phone jack, and it has a cat 5 cable on the other end of it. If I convert it to an ethernet port, will this give internet?

I just installed the ethernet port by matching the colors on the instructions, but it doesn't seem to work for either T568B or A. I'm assuming my idea doesn't work. Thanks for your help.
 
Solution
jsmithepa


Well yeah, I thought you had this part already figured out.

If you are lucky, all of the houses' phone outlets go to a single distribution panel, and one hopes this panel is in the same room as your modem/router. This is what we call a STAR topology, individual rooms with individual cables going to a central location.

But that may not be the case. My place is wired for 2 phone lines and multiple phone outlets, so it goes: Junction (we call it the DEMARC) then both sets of wires go to room1 outlet, then continues to room2 outlet, then go to room3 outlet. With the intention of...
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jsmithepa

jsmithepa

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Jun 14, 2014
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The DSL bit really doesn't matter, that's the WAN side. When you talk CAT5, most people are referring to the LAN side, which is identical no matter what kind of internet service you have.

If you followed the 568a/b, it *should* work, and you are using this connection for exactly what? Modem to router? router to switch? switch to end device?
 
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Wei3he

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Dec 1, 2015
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4,510


Thanks for your response! My modem/router router combo from AT&T is already connected in another room and good to go. Right now this new ethernet port I made is for connecting to my PC. Mainly because I'm a snob and hate WIFI.
 
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k1114

k1114

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May 2, 2010
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Did it come with filters? Normally any other phone jack is still just a mixed phone/internet signal unless filtered for use of either one. But internet needs to come from the modem so it needs to connect to that. If you don't want wifi, you could either run ethernet or use a power line adapter.
 
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Wei3he

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Dec 1, 2015
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4,510


There are no filters attached anywhere, is that necessary? I'm not too familiar with DSL.
 
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Wei3he

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Dec 1, 2015
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Yea, so the modem/router is set up in the other room connected to the phone jack. My main question is will this give internet to the other rooms?
 
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Wei3he

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Dec 1, 2015
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4,510


Oh I think I understand the problem, the internet isn't going back into the wall, so only that one room has it. So maybe if I find the main switch panel where all the phone jacks goes to....then I can get internet to the other rooms?
 
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jsmithepa

jsmithepa

Polypheme
Jun 14, 2014
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Well yeah, I thought you had this part already figured out.

If you are lucky, all of the houses' phone outlets go to a single distribution panel, and one hopes this panel is in the same room as your modem/router. This is what we call a STAR topology, individual rooms with individual cables going to a central location.

But that may not be the case. My place is wired for 2 phone lines and multiple phone outlets, so it goes: Junction (we call it the DEMARC) then both sets of wires go to room1 outlet, then continues to room2 outlet, then go to room3 outlet. With the intention of... if Room1 needs Line1, just hookup line1 wires to Room1 jack but leave line2 unconnected and let it continue and connect to Room2 outlet, if line2 is to ring in room2. THIS is NOT a Star topology and limits what you can do with it.

So you gotta know how it's currently wired. No guessing. Know how to use a ohm meter?
 
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Solution
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Mrey066

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Dec 4, 2015
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4,510
if the line going to the jack with your dsl is cat5 then you maybe able to backfeed the Ethernet on 2 pairs of the 4 to the demarc and connect it to the room you desire using the orange/green pair configuration on the rj45 this will allow 10/100 connection but not gigabit but you need the correct connectors wire nuts and standard electrical connectors will not work well, and you need to know where the demarc is on the outside of the house.
 
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