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 Question by Andy Ortenzio posted 14 Jul 2004
Mr. Abaimov has answered some questions quite well. I would like to ask another:
If you are using an RJ-11 jack and CAT5 cabling, exactly which colors/wires should go to which leads/pins? I understand that usually the blue/whiteblue are the center, but exactly which one to which lead, and which pair to use for "line 2"?
A picture would be great.
 Answer by Joseph Golan posted 15 Jul 2004
Dear Andy,
There is an excellent description and pictures at
In addition most RJ-11 Jacks have the conductor color code printed on the side of the jack to assist in termination. See the following link for a look at the instruction sheet for a Leviton RJ voice jack.

BTW Leviton components are sold through your local Home Depot store in addition to being available at many electrical supply houses.

In addition to Leviton, similar products are made by most of the manufacturers of station jack components.

Joseph Golan, RCDD

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