Installing a NID Splitter after a Telco NID

You can install a NID Splitter right outside your house or a commercial building if the need arises. Even though it would be just as easy to install DSL filters. If you don't have the option of installing DSL filters follow the steps below.

1. Remove the inside wiring from the Telco NID and place them away from the installation so they do not cross.
2. Create a patch or jumper cable/wire between the NID and the NID splitter. You will connect the pair to the NID where the inside wiring used to be and patch that pair to the Network side of the NID splitter creating a trunk link.
3. You then attach the pair used for voice that was once connected to the Telco NID to the Voice side of the NID Splitter.

There are now two ways of going about the last step.

4a. If you are not installing a new jack then take the extra pair from the Voice line and attach
that to the Data posts on the NID Spitter. This will have to be mirrored at the jack also.

So as an example if you have a two pair wire going to the inside of your house you would in step 3 connect the red and green pair to the Voice posts of the NID splitter and the black and yellow pair to the Data posts. Go to the jack inside and connect the black and yellow pair to where the green and red pair where previously connected.

You can also install a two port jack and put the black and yellow pair on one port and the red and green on the other. Using one for DSL and the other for the telephone.

4b. If you are installing a new jack all together then just run a pair from the Data posts on the
NID Splitter to the DSL jack and connect the modem.


As a precaution and a matter of safety I try not to connect any live wiring as I am working on it. So in this example I would disconnect the Telco side of the Telco NID or wait to connect the patch/jumper wire to the Telco NID until all work is complete.

Below is a homemade picture showing a new install:




For the 4a type of install you would remove the blue wire going to the wall jack and replace that with the grey wire using the black and yellow or any other pair instead.

JS