[lug] Cat 5e cable color codes

[Mr Viggy]

For straight RJ45 (i.e. not the back of the conenctor, the 4x2 slots), 
if you take a male conenctor, and hold it with the spring clip down, pin 
#1 is at the far left.  So, if you are looking head on at the female 
connector, and the slot for the spring clip is at the bottom, pin #1 is 
on your left.

Viggy

PS.  I'd get an ohm meter and test that all the pins match up with the 
proper contacts in the 4x2 array.

D. Stimits wrote:
> Big Note: This is for wiring inside the walls of the building, expecting 
> a "straight-through" cable, so far as I can tell.
> 
> More info, see this diagram:
>  http://www.battlefieldlinux.com/images/NK5EMWH.jpg
> 
> That is a poor man's gimp drawing of the perspective of the connector 
> involved. The 8 parallel contacts marked "Front" are the female RJ45, 
> the face view has been rotated out 90 degrees so it can be seen at the 
> same time as the "Back" can be seen. The "Back" is a 4x2 set of 
> self-cutting and self-locking wire contacts...the wires get stuffed into 
> those contacts. Normal and expected wires are shown in red (internal to 
> the one-piece plastic connector), while the yellow and orange show where 
> two wires cross internally. I would like to use the standards of:
> http://www.networktechinc.com/standard.html
> http://www.networktechinc.com/images/368a-b.gif
> 
> (specifically, the "A" standard that people are mentioning)
> 
> However, I do not know which pin in the RJ45 is considered which pin 
> number. And with the crossing wire at one point, I am not sure if maybe 
> this is some strange connector. Now if I adjust for this crossing of two 
> wires, I will *probably* be doing the right thing, but I hate to waste 
> connectors, and worse, I hate to kill off network cards. (I really wish 
> the connector used the same color code as the cable).
> 
> I am about to go read the link Paule Bille is giving, it might offer 
> more detail.
> 
> Anyone with suggestions on how to treat that crossing of wires inside 
> the connector? I believe I should arrange the wires to have their final 
> effect (making allowance for the internal wire flipping) be the "A" 
> standard from:
> http://www.networktechinc.com/images/368a-b.gif
> 
> D. Stimits, stimits AT idcomm.com
> 
> Mr Viggy wrote:
> 
>> I don't know what the diff is between the two schemes, but I do know 
>> that sceme A is a telephone industry standard.  I wired all my jacks 
>> according to scheme A.
>>
>> Basically, pait #1 is blue-wht/blue; #2 is org-wht/org; #3 is 
>> grn-wht/grn and #4 is brn-wht/brn
>>
>> If you look closely at an RJ45 TP network jack, you'll notice that 
>> only pairs one and two are used.  They are also seperated out in the 
>> jack, why I don't know (i.e. used pins are 1, 2, 3, and 6 I think).
>>
>> FYI, in my house, since only two pairs are necessary for a connection, 
>> and since none of my runs are too long, I actually broke out the other 
>> two pairs in a couple of my wall plates (i.e. only ONE 8 CAT5e wire 
>> runs to the plate; but I have TWO RJ45 jacks in the plate).
>>
>> On that connector you have, follow wiring scheme A (I did).  The solid 
>> color boxes refer to the solid color wires; the white boxes with the 
>> color stripe refer to the striped wires.
>>
>> Viggy
>>
>> Paul Bille wrote:
>>
>>> Dan > I am trying to find out recommended color-to-pin . . .
>>>
>>> There are two wiring schemes, 568a and 568b.  Here's another reference:
>>> http://www.atcomservices.com/highlights/cat5notes.htm - Cat 5 Tutorial
>>>
>>> Paul
>>> http://bille.cudenver.edu/author
>>>
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