The following guide covers the nte5cvdsl mk4 combination socket available here. This is the telephone wiring colour code for the nte5 bt master socket with the cable feeding extension sockets attached to the customer removable front plate.

Install An New Style Nte5c Bt Openreach Etc Telephone
Bt master socket 5c wiring diagram. The back plate is the same as the nte5c. You can see the test socket revealed to allow you to check the bt line before your own wiring. C1 18μf capacitor r1 470kω out of service resistor r2 bell wire resistorchoke colouring says ω meter reads 77ω. First youll need to check your type of master socket. This is usually what an extension socket looks. Bx 5926 bt master socket wiring telephone wiring colour code bt extension socket diy telephone wiring colour code bt extension socket diy linebox nte5c user instructions bx 5926 bt master socket wiring telephone wiring colour code bt extension socket diy telephone wiring colour code bt extension socket diy linebox nte5c user instructions bl 2975 openreach nte5 master socket.
This is where the broadband signal is strongest before it goes through any other home wiring which could cause interference. If youre having trouble with your broadband a few simple checks can get you up and running again. The connections on the mk4nte5c are cam lock connectors do not require a tool. Wiring for master 5c socket hmm on closer inspection it looks as though the socket on the left has been connected to the incoming wires on the green and black pair pair. Its always best to connect your bt hub to the master socket if you can. In home wiring and test socket 1.
If you have fibre to the home have a look at fibre to the home. A circuit diagram of the bt openreach nte5c telephone master socket. Instructions on how to connect home telephone wiring to. If you have more than one socket the master socket is the one that will feed any extension sockets. Check your wiring and set up for information. Otherwise follow the instructions below.
Telephone master socket wires. With the mk4 vdsl filter front cover removed the test socket can be seen at the centre top of the back plate and instructions on how it is used are shown above. Can you move the sockets to get a clearer picture of what colour wires and cables are connected where. This is how the telephone wiring colour code looks wired. Please note as soon as either the original lower front plate or a mk4 faceplate is removed from the nte5c master socket any extension wiring connected to the nte5c backplate the part with the test socket is also disconnected.