Telephone Wire Color Code

simple explanation of the Telephone wire color code. How to read and decipher all those different colors you see inside a phone cable.

The Telecom wiring color code is based on a set of 25 colored pairs (50 wires). Each pair is comprise of a Major color (White, Red, Black, Yellow, Violet) and a minor color (Blue, Orange, Green, Brown, Slate).

The minor colors are repeated in groups dominated by the major colors. for instance the first group - WHITE - has a white/blue, white/orange, white/green, white/brown and white/slate.

Then, the same five minor colors repeat with RED - red/blue, red/orange, red/green, etc.

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[Janotes]

Did telecom for 5 years.. 1A2 was practically phased out. Used to install electronic key systems. Was amazing that these systems had all the features of 1A2 Key systems running on one pair instead of 25 pairs. Almost learned fiber but changed careers. Still miss playing
Around in the MDFs cabinets..

[AricVogel]

Great explanation Steve, these color codes have been very handy for me in dealing with my Norstar systems over the last few years.

[argusfleibeit]

Wow. I am learning so many new things every day.

[sevensevenizdashiz]

This is going to help me get a technician job...maybe! Seriously this is going to give me shot so thank you! I’m taking a crash course 😆

[aphleesegurtra]

Bravo, you made it look soo easy!! Thank You!

[robertborisov]

If the orange pair is compromised, can't you just use the blue pair or the brown pair instead?

[markschrader]

I need help fixing my phone jack, my other phone jack behind my desk works but all the wires are hooked up i tried to put in a new jack in my kitchen it has 4 screws i hooked up solid blue on the B post solid orange on the R post orange and white on the g post and blue and white on the Y post please help me fix this i need it for my wifes heart monitor. The colors available are solid orange orange and white solid blue and blue and white solid green and green and white solid brown and brown and white

[AARON]

Why the fuck does this video buffer for fucking 29 years?!

[GTVAlfaMan]

The ribbons separate what are called “binder groups”.