Our NTE5's are made by the same people who supply BT, they are the latest revision with the bell wire filter that can improve ADSL performance.
Installing an NTE5 is very easy, first off we should point out that officially speaking you should not fit the NTE5 directly to BT's wiring (the wiring that comes from outside the building). However you are very unlikely to get into any trouble over fitting one yourself. Here is what an NTE5 consists of :-
The front lower plate comes off :-
And finally the middle plate which reveals the backbox which you may or may not need :-
If you are just fitting the NTE5 without extension wiring all you need to worry about is the back of the middle plate :-
The IDC connector has three slots but only two are used, these are marked A & B :-
Using an IDC too (https://www.run-it-direct.co.uk/tools/) install the wiring, there is no need to remove the insulation from the wire.
First lay the wires over the top of the IDC block :-
Then use the IDC tool to push the wire firmly into the block, note the tool will only fit one way :-
& that is it!!
Simply install the two wires that come from outside into these two connections. Polarity doesn't matter but if you have access to a multi meter then A is positive and B is negative. You should have around 50V DC across those. If upgrading from and old BT socket to an NTE5 connect 2 to the B leg and 5 to the A leg.
BT drop cables usually have Orange, White, Green and Black wires, there may also be 3 yellow/cream wires which are used to support the cable ONLY & are not used for carrying the signal. Normally the Orange & White pair will be the incoming line. If this is not the case use a multi meter set to DC to find 48V DC over a pair. The A connection is positive & the B connection negative, normally Orange is A & White is B. The Green (A) and Black (B) wires are used if you have a second line or if the first pair develops a fault.
Now if you want to fit extensions around the house you need to look at the back of the lower front plate :-
You will see these are marked 2, 3, 4 & 5 :-
Most modern phones will work with just 2 & 5, if you find your phone doesn't ring then you need to connect the 3rd wire. It has been proved that the 3rd wire CAN cause interference on ADSL equiped lines, for this very reason the latest version of the NTE5A has a filter on this wire. Simply connect wires 2, 5 & 3 on the NTE5 to the same connections on your extension socket(s).
Unbranded version made by Pressac who supply BT https://www.run-it-direct.co.uk/bt-line-boxes-and-sockets/nte5-nte5a-bt-openreach-socket/
Openreach branded-printed version https://www.run-it-direct.co.uk/bt-line-boxes-and-sockets/openreach-branded-nte5-master-socket/
The BT Openreach Installation booklet for the NTE5 socket can be downloaded here :-
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