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CAT6 cables suddenly not working

post #1 of 9
Thread Starter 
Hi,

I am new here in the forums.
But could anyone help me, I wont as an IT in a construction company.
I recently encountered this problem where one cable suddenly not working properly.
We are using 568B as our standard cabling here, lines 1,2,4,and 5 are working as of checking,
but lines 3,6,7, and 8 are not.

Before it was working flawless.

If this additional information helps, the cable are buried underground inclosed in a pvc hose.


Please could someone help me with this one.


Thanks in advance

Hayes
post #2 of 9
That's why you always do 2 cable runs for things underground.
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post #3 of 9
Quote:
Originally Posted by Puckbandit35 View Post

That's why you always do 2 cable runs for things underground.


This, but I'd run a helluvalot more than 2 runs for the trouble to conduit underground.


How long are the runs?
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post #4 of 9
Thread Starter 
less than 20 meters.

I can replace this cable but I want to know if the cable is still usable or not.

I've tried recrimping but to no avail.
post #5 of 9
It's probably kinked and broken those lines somewhere underground.
    
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post #6 of 9
If they are being pulled through, use a higher quality cable.

Also for every one line you run, run 2 more.
post #7 of 9
Thread Starter 
So this means that this existing line is not usable anymore?
That the only choice would be to run another line in there.

No need to put more than 1 line I guess since this is a construction site office, it will not be permanent.
post #8 of 9
Well, the line is usable but you'll never be able to pull gigabit. If you have atleast 2 pairs, you can have a 100 Mbps connection (Max). You would have to terminate it like this:

1 2 4 5
1 2 3 6

Where:
1= White/Orange
2=Orange
3=White/Green
6=Green

So on both sides of the cable do this:

White orange stays the same
Orange stays the same
Your Blue -> white/green
Your white/blue -> Green


You will degrade your distance as it doesn't follow the "best standards" due to abnormal twists in the line. So if you have a long run, it may not work well.
This is a band-aid fix until you get a new line run. Do not use this as a permanent fix.
Edited by wgman003 - 12/12/12 at 6:02am
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post #9 of 9
You can do ^that, but if recrimping doesn't work it's pretty obvious the cable is dead. You're best off just buying a new one.
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