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Telephone Wiring Diagram #1


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telephone-jack-wiring

 Summary: This telephone wiring diagram with photos and instructions will show you the direct steps to correctly wiring a telephone jack.


Telephone Wiring Diagram for Standard Telephone Jacks for the Home

  Wiring a Telephone Jack

After installing the Cat 3 - 3 pair phone wire I am ready to install the wall jack.

You will have a wide variety of telephone jacks to choose from but the wiring for a single line phone service will be standard. Keep in mind that the colors of the telephone wiring in your home will be typically one of two types or insulation colors. Older telephone wiring was a basic Cat-3, 4 conductor or 2-pairs with red, green, black, yellow. Newer homes can have anything from Cat-3, 3-pair on up to Cat-5e, with 4-pairs, with the insulation colors being a combination of solid and solid with white for each wiring pair. The wire pair colors are blue, orange, green and brown.


This telephone wiring diagram shows the standard of wiring telephone jacks.

The single line set will use the following pairs depending on your cable:
Red - Green
White Blue - Blue/White


[click for larger image]

Quick Fix Tip:
After you connect your pair to the jack and you get a Dial Tone but you do not hear tones
when you dial a number from a button pad then just reverse the pair.

Installing a Telephone Wall Jack
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Most wall phone jacks come configured
for a 2-line cord even thought a 1-line phone will
work just fine.
You are probably wondering why the extra pairs?
Well they will be used if you ever decide to add
another phone line or if for some reason the
primary pair stops working, then one of the
spare pairs can be used.
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Two Lines from one Telephone Jack
 This style of phone jack can be pre-wired for a 2-line phone service, giving you the opportunity to have a second phone number that can be used for a business line or a fax machine.

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Make sure the wires are well under the screw terminals. If you plan to use a cordless phone its always a good idea to install your phone jack wiring beside an existing wall receptacle which will be available for a low voltage transformer which may be required.
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