[comp.dcom.telecom] Twisted Pair Color Coding

khl@cunixc.cc.columbia.edu (Kenneth H. Lee) (07/31/89)

W (hite), R (ed), B (lack), Y (ellow), V (iolet)

Bl (ue), Or (ange), Gr (een), Br (own), Sl (ate)

W/Bl, Bl/W  W/Or, Or/W  W/Gr, Gr/W  W/Br, Br/W  W/Sl, Sl/W
R/Bl, Bl/R  R/Or, Or/R  R/Gr, Gr/R  R/Br, Br/R  R/Sl, Sl/R
B/Bl, Bl/B  B/Or, Or/B  B/Gr, Gr/B  B/Br, Br/B  B/Sl, Sl/B
Y/Bl, Bl/Y  Y/Or, Or/Y  Y/Gr, Gr/Y  Y/Br, Br/Y  Y/Sl, Sl/Y
V/Bl, Bl/V  V/Or, Or/V  V/Gr, Gr/V  V/Br, Br/V  V/Sl, Sl/V

Each bundle of 25 pairs is coded in this manner.  To distinguish a
wire, you need to look at both wires in the pair.  W/Bl, which is
White/Blue, is a wire with a wide spiral of white and narrow of blue.
Whereas Bl/W, Blue/White has a wide spiral of Blue with a narrow
spiral of white.

In our installation, the term used for each bundle was a 'bin'.  I'm
not sure if this is what is used out in the rest of the industry.

If you have more than one bin of 25 pairs in a cable, each bin of is
surrounded by tracers which use a color scheme similar to the wires.
For example, if you had a 200 pair cable, you would have 8 bins of 25
pairs each.

bin	tracer color

 1 	W/Bl
 2	W/Or
 3	W/Gr
 4	W/Br
 5	W/Sl
 6	R/Bl
 7	R/Or
 8	R/Gr

I hope this is useful.  This is all from the back of my memory and
some old notes I have.  I haven't worked for the Data Communication
group in a while so I can't vouch for the accuracy this information.

Kenneth H. Lee				khl@cunixc.cc.columbia.edu
Columbia University			...{topaz|rutgers}!columbia!cunixc!khl
209 Watson, 612 West 115 Street		khlcu@cuvmc.bitnet
New York, NY 10025			(212) 854-8230

jbh@ncifcrf.gov (James Harvey) (08/02/89)

In article <telecom-v09i0266m04@vector.dallas.tx.us>, khl@cunixc.cc.columbia.edu (Kenneth H. Lee) writes:
>
> In our installation, the term used for each bundle was a 'bin'.  I'm
> not sure if this is what is used out in the rest of the industry.

That would be short for Binder Group, which is the Bell term.

>
> Kenneth H. Lee				khl@cunixc.cc.columbia.edu
> Columbia University			...{topaz|rutgers}!columbia!cunixc!khl
> 209 Watson, 612 West 115 Street		khlcu@cuvmc.bitnet
> New York, NY 10025			(212) 854-8230

--

Jim Harvey                        |      "Ask not for whom the bell
Michigan Bell Telephone           |      tolls and you will only pay
29777 Telegraph                   |      Station-to-Station rates."
Southfield, Mich. 48034           |

ulysses!gamma!mibte!jbh