Home cat 5e wiring not working

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indiangummy

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Sep 30, 2016
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Hey guys so im moving into a new place and i had a question about cat5e wiring. So its a 2 story home and my modem and router are downstairs. right now the modem is connected through coax. But i need to get a wired connection upstairs and i was trying to figure out the best way to do so. The upstairs coax connections aren't connected to anything for some reason. But the house does have cat5e wall mounts wired in all the rooms upstairs. all of the cat5e cables are connected to a at&t box in the living room where they get split into 2 separate 4 wire lines for telephone and broadband. Well I'm not using att i have comcast and i don't need a telephone line so what i did was cut the wire going into the box and combined the 8 wires to wire it to a cat5e port. I made sure to match the wiring to the same standard as it was wired in the upstairs cat5e wall mounts. But im still not getting a connection upstairs. If you have any ideas or questions please let me know. Here is the picture of the living room box and cat5e port. Feel free to ask any questions you have, thanks in advance for all your help.

Edit: I'l add the pictures when i get home. Also i will buy a network tester and test the connections.
 
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grimfox

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Jun 2, 2009
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The network tester should tell you what you need to know. I suspect that they used cat5e for some sort of VOIP system, so you may find that not all the pairs are connected because ... I dunno why they would do that. I would pull one of the plates upstairs and see if you have a similar wiring scheme to what you found originally in the ATT box.
 
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indiangummy

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yeah, so i wired the living room cat5e to the A wiring scheme (same as upstairs) i checked all the rooms upstairs and they are all wired to the A wiring scheme using all 8 wire's ( unlike the attached box in the living room). the att box had the cat5e wire split to provide connections for telephone and broadband. i need the full speed of cat5e so i had to combine the cat5e.
 
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failboat

failboat

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Feb 19, 2010
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You want the jacket and twists inside the crimp or keystone. If there is a bunch untwisted or jacket cut off you are going to want to see if you can pull more line into the box so you can get all 4 pairs at the jacket. be careful what you cut. try and test with what you have first before cutting wire. the twists are what is really important.
 
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punkncat

punkncat

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More likely than not the CAT rated wire was run in "daisy chain" like regular phone wire. In this case it's worthless to you for the purpose you want.

If you have a tone generator you can check to see what all your pairs are connecting to. Additionally you can use a CAT tester to see all your pairs come back good or bad, but that last bit is a touch expensive for an end user to buy for something like this. I would check with a local LV company that deals in networking/phones to see what you are up against.

IMO, it would be far easier to set up a good wireless network.
 
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indiangummy

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ok so here is the situation i got a network tester and not a single cat5e port in the house tests good. All of the rooms upstairs have a wall mounted cat5e wire wired correctly, i checked. The downstairs where i disconnected the att box and wired it into the cat5e port only tests good for line 4,5, and 6 on the network tester. here is a picture of the living room. this is also how all the rooms upstairs are wired.


https://gyazo.com/b4ddd305d84e73e773011216fcfaad8e

https://gyazo.com/1a0e6ae7039a9a0fb431fc9f224dbe21
 
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jsmithepa

jsmithepa

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Verify both ends follow 568A or B, must be same on both ends, look at the label under, it tells u.

U "cut it" doesn't say much, wanna show more pics? but all I would be interested is, looking at both ends of that, assuming same, cable, that is intact, and 568A/B wiring verified. Something happened between the 2 ends, SHOW it.
 
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indiangummy

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well it was spliced...... it was spliced and was going into the att box and then being split into telephone line and a broadband line. i cut the wire before the att box and combined them.

But yeah at this point i dont know what to do.
 
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indiangummy

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yes all the rooms are wired to 568A. after looking at the rooms that is how i decided to wire the living room port to 568A
 
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indiangummy

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thats the weird part, i did use a punching tool. i'l re wire it and try again.
 
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jsmithepa

jsmithepa

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Yea, but DMM does it in a more granular fashion, am suspecting bad punch, and/or splice somewhere else.

10 people asking these cabling question, 9.5 end up walking away. Is not simple for newbies.
 
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