Telephone Wiring Colour Code - BT Telephone Extension 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. You can see the Test Socket revealed to allow you to check the BT line before your own wiring. This is how the Telephone Wiring Colour Code looks wired with the stripey telephone cable. How to wire a phone extension from a BT Master socket UK Click to view on Bing8:38How to wire a phone extension from a BT Master socket UK Business and Residential Telephone Engineers in Uk, How to install a NTE5 Telephone Master Socket and Telephone Extension - Duration: 22:08. My Mate VINCE 251,448 views. UK Telephone WiringAuthor: wirewizards1Views: 586K UK Telephone Wiring They connect to the back plate by means of a fixed plug. The fixed plug is a standard BT plug and socket and allows all the internal wiring to be easily isolated for fault finding. A normal phone can be plugged directly into the socket remaining in the wall to test if the line is OK. The Wiring: Wiring Wiring Information - Telephones UK The wiring diagram for a master LJU socket is shown here. Note that the pictorial view shown above only serves to indicate the two differing types of sockets and wiring connections. Contrary to how it might seem, C1 is connected to terminals 2 & 3, not 1 & 4.
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