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How do I wire an extension phone socket that has 4 wires?

Red, white, green and blue. Which colour to which number?

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  • pixelfiend66 Feb 25, 2009

    I have the same problem, only thing is the 4 wires are a different colour to the above request- white/orange striped, white/blue striped, orange and blue.

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1 Answer

Red and green would be on the center 2 pins (4, 5). White and Blue would go outside of that (3, 6)

Posted on Jan 11, 2009

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1 Answer

Phone Jack Wiring Problem


Your apartment is wired for two lines but you are using only one of the two. Your phone jack has red and green terminals for one line and yellow and black terminals for the other (old color codes). The four wires coming in to your apartment are actually two lines: orange/white and white/orange plus blue/white and white/blue (new color codes). One of those lines is active. Connect the orange/white wire to the red terminal and the white/orange wire to the green terminal. Plug in your phone and listen for a dial tone. If no tone, disconnect the first line and connect the second pair of wires. Listen again. DO NOT CONNECT ANY WIRES TOGETHER. Just follow the steps above. If you still don't get results, the phone company may not have activated your connection

Dec 30, 2012 | Phones

Tip

Telephone jack wiring


Most cheap jacks have 4 wires, red, green, yellow & black. Most modern houses have wires paired up (twisted pair) like blue & white with blue line or stripe. Line 1 is red/green or blue/white. Line 2 is yellow/black or orange/white(with orange line/stripe).

on Feb 21, 2015 | Phones

1 Answer

Secondary telephone socket has 4 wires: Green, Red, Blue and White. Not sure in which of the 1 to 6 numbered terminals these wires are fed into? Please help!


If your hooking up the telephone jack for one line you would connect your line to the red/ green pair (3 and 4). If your hooking up 2 lines your second line would go on the yellow/ black pair (2 and 5). If you were hooking up a third line to the jack it would go on the white/ blue pair (1 and 6).

Apr 17, 2010 | Phones

1 Answer

I'm installing 2 phone jacks in my newly remodeled home. We are supposed to have one phone line. Each of the boxes with phone wires in them has two cables coming out of it. In the first box, the one cable...


Pity that whoever did your remodel didn't give you a floor plan. In new construction, we make everything go to a central point. Old style was to loop everything through. It would be easy to tell, because you'd see the loops.

If you want to do this yourself, and save some money, give this a try.
The color code is that the green/red/black/yellow go to the jack. Hook all 4 wires (8 because you're going to hook both cables together to a jack) to the jack. Then, down the road, when someone has to add a second line they won't have to open this back up again. When it comes to the paired cable, look at the wires. One of the wires has more white than blue (White/Blue lead) and one has more Blue that white (blue/white lead) and so forth. You're going to be working with the blue pairs and the orange pairs, and spare out the green and brown pairs.

Strip the 4 remaining wires (the ends so they can go on the screw terminals) and connect them as follows:

White/Blue to Green Blue/White to Red White/Orange to Black Orange/White to Yellow.

If you're using Insulation displacement jack (the kind with caps where you push the wires into the slots), STOP! You're going to need more parts.

Mar 31, 2010 | Phones

2 Answers

I have a cable with 6 wires but my wall phone jack only has connectors for 4 wires; none for the blue and white wires. what to do?


Most phones use ONLY two wires. Check which pair of the 3 pairs you have has about 50 volts on it.

Connect those to the center two contacts of your jack which MIGHT be labeled red and green or ring and tip respectively.

If your phones require other connections, they may be incompatible with the system there.

Oct 31, 2009 | Phones

1 Answer

No service


What color wires were there ???
What kind of jack, a new one that had...
white blue/blue
white orange/orange
white green/ green
white brown/brown
?????

If so, the white/white blue would go to the same wires.
If you had red/green and black/yellow, the red/green should go to the white blue/blue.

Jan 13, 2009 | Phones

1 Answer

Phone socket


I found some good information on this site: http://www.ling.upenn.edu/~kurisuto/phone_wiring.html.

He lists that the old style wire has become obsolete, and shows a diagram of how they line up to the new style.

Jun 17, 2008 | Phones

1 Answer

I would like to know how to wire a rj45 socket please


There are two standards, 568A and 568B. As long as both ends of the cable are wired alike, it doesn't matter which you use.

For the 568A:
1 - White / Green
2 - Green / White
3 - White / Orange
4 - Blue / White
5 - White / Blue
6 - Orange / White
7 - White / Brown
8 - Brown / White

For the 568B, just swap the Green pair and the Orange pair.

Mar 15, 2008 | Phones

2 Answers

Ntl phone wiring


The blue and blue/white attach to the red and green wires behind the jack assembly. The other colors are only used for a 2nd and 3rd line number. Thank You Jerry

Feb 10, 2008 | Phones

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