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T1 from Westell NID through 66 Block

Telco companies are using outside NID's as T1 Smart Jacks more and more. This cuts down on the Telco installers time from installing inside wiring, but it leaves the end user to finish the job.

Below is a how to for extending the T1 from the NID to the Demark inside the building. I will use the Westell DuetPak as the NID example.

Here is a picture of the Westell NID:


Here is a Spec Sheet for this NID.

As you can see the T1 boards are installed in the left side of the NID and routed through to the right side via an RJ45 jack.

The first thing you should do is grab a pencil and paper and mark down which pair will be the Rx and Tx to extend. What colors are going from the NID and what color the 25 pair will be spliced to. I also recommend killing the extended current by removing the RJ45 male end that is between the right and left side of the 4 posts you will be working with.

Before you start the run make sure to trace all your pair and mark them.

Using 1 and 2 (Black and Yellow) on the right side of the NID as Rx and 4,5 (Green and Red) as the Tx end.

Here is a drawn picture of the NID above with extended pair that will be spliced to the Telco 25 twisted pair and will run to the Demark 66 block inside the building.


This is with the 25 twisted pair spliced:


From here you will continue the run to the 66 Block at the demarcation point. This is what it will look like with the left side being the Telco side and the right side will run to your T1 Jack.

The right side of this 66 block will run to your T1 Jack and in the end will look like this:

In the end what is being accomplished is an extension of electricity from the origin (or close enough) to the end point. So just try to keep all the wire colors consistent so you can follow them start to finish. Mark your wires at the NID, 66 Block and label the jack when you are finished then hook it up to your router and you should be good to go.

JS