Network Cabling

[Malasius]

Hey all! I have bought a 100m of cat5 cable. I need to do some cabling but am having an issue with this specific cable. When crimping it does not have the normal striped white strands. It only has 4 plain white strands and then the usual orange, brown, green blue strands.
Anybody got any good ideas how to crimp this cable as T568B? Never seen network cable like this before!
Thanks for any suggestions!

 

[zakdoc89]

Best way to wire this would be, to use the twisted pairs as a guide. the orange wire will be paired (twisted) with the white orange, blue with white blue, green with white green, and brown with white brown. then use the digram here: http://en.wikipedia.org/wiki/TIA/EIA-568-B to line them up in your desired standard.

 

[Drunkard #1]

Hey all! I have bought a 100m of cat5 cable. I need to do some cabling but am having an issue with this specific cable. When crimping it does not have the normal striped white strands. It only has 4 plain white strands and then the usual orange, brown, green blue strands.
Anybody got any good ideas how to crimp this cable as T568B? Never seen network cable like this before!
Thanks for any suggestions!

I thought about rewriting the wiki article on twisted pair cabling and colouring, but decided you can look that up yourself.

Cat 5 is a special type of twisted pair, so while every "4 pair" twisted pair cable will have blue, orange, green and brown, each paired with a white, only cat 5 will have the stripe on the white. (Obviously there are exceptions.) Maybe cable makers consider network engineers (who use cat 5) to be thicker than telecoms engineers (who use "normal" twisted pair). Maybe it's because network engineers only strip 12mm of cable, but I don't think so, because if it's true cat 5 cable, there'll be enough twists in 12mm to tell what's paired with what.

In short, make sure it's cat 5, if it doesn't say cat 5 it isn't cat 5.

 

[The_Unbeliever]

What was said previously.

The orange wire will be paired with a white one. Green with a white, and so on.

If you're unsure, cut off all the white cables, and use only the colored ones, thusly :

pin 1 - green - pin1
pin 2 - orange - pin 2
pin 3 - blue - pin 3
pin 6 - brown - pin 6

This will work for 10 and 100-base networks, for a Gig-base network you'll have to get the correct rated cable though.

 

[Tacet]

What was said previously.

The orange wire will be paired with a white one. Green with a white, and so on.

If you're unsure, cut off all the white cables, and use only the colored ones, thusly :

pin 1 - green - pin1
pin 2 - orange - pin 2
pin 3 - blue - pin 3
pin 6 - brown - pin 6

This will work for 10 and 100-base networks, for a Gig-base network you'll have to get the correct rated cable though.

+1
Won't work for PowerOverEthernet either. But normal 10/100 doesn't really need all 8 wires.

 

[Ivork]

Best way to wire this would be, to use the twisted pairs as a guide. the orange wire will be paired (twisted) with the white orange, blue with white blue, green with white green, and brown with white brown. then use the digram here: http://en.wikipedia.org/wiki/TIA/EIA-568-B to line them up in your desired standard.

Wot he said ^^. Obviously the plain white wire twisted together with the orange one would be your striped white/orange wire, and so on. Just be careful not to mix them up before you crimp.
If they not twisted then you have been sold burglar alarm wire or something - not ethernet cable of any kind.

 

[Tacet]

Judging from the colours of the pairs he was sold something else than proper Cat5 cable. 10/100 over short distances is quite resilient, and can work with sub-standard cable and a bit of luck. But if your luck is out, you might experience packet loss due to cross-talk between the wires, or the cable attenuation might be too high (shouldn’t be a problem for short lengths). I wouldn’t throw the cable away, though. Make it off, test it (any chance that you know someone with Sunrise testers?) and if it works, well, enjoy.

If they're not twisted - well, you might find future use for the cable. I wouldn't recommend using it for Ethernet, in that case.

 

[Malasius]

UPDATE: You guys were right, after cutting and stripping the white cables were twisted with the colours... so i just crimped as per normal T568B and cable works perfectly.. You just gotta be careful not to mix the whites when lining up to crimp otherwise you will get them mixed up very easily... Thanks for the advice though!

 

[MidnightWizard]

Indelible

You just gotta be careful not to mix the whites when lining up to crimp otherwise you will get them mixed up very easily... Thanks for the advice though!

Mark the small section you need with coloured indelible pencil or some such.

Very easy to get mixed up

 

[wetkit]

Next time buy decent cabling.
That cable sounds very dodgy.