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Connections for multiple line telephone jacks

 

Connections for multiple line telephone jacks


The following will inform you on how to properly wire a multiple line phone connection.
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Below is another iteration of the color code / connection series with a pretty good explanation of the basics.  It shows a 6 conductor jack, which is pretty standard these days.

Pair 1 (T1 & R1)
   - Usually the primary dial tone or talk circuit is wired to the center two pins (pins 3 & 4) and is the white/blue and blue/white pair (AKA: T1 & R1 - tip 1 and ring 1). A standard single line phone draws dial tone from these center pins.
 



Pair 2 (T2 & R2)
   - The secondary circuit is wired to the two pins (pins 2 & 5) directly to the side of the center pins and is the white/orange and orange/white pair (AKA: T2 & R2 - tip 2 and ring 2). Depending on the application, the secondary circuit can either be the 2nd dial tone line on a two line phone, or the data/control circuit for an electronic key phone.

Pair 3 (T3 & R3)
   - The third circuit is wired to the two pins (pins 1 & 6) on the outside and is the white/green and green/white pair (AKA: T3 & R3 - tip 3 and ring 3). Depending on the application, the third circuit can either be the 3rd dial tone line on a three line phone or an accessory circuit for an electronic key phone.



The information contained within this article is from http://www.phonegeeks.com.

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Last Modified:Tuesday, April 28, 2009
Type: HOWTO
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