For example, the LJU2/6A is an extension socket with screw terminals in a 67mm square box. The 'A' suffix indicates the mating plug is type 431A or 631A (qv). An LJU2/3 C 'left-handed' extension socket is available for specialist applications to accommodate plugs type 430A and 630A (qv). The NTE (Network Termination Equipment) socket Sometimes known as 'CTE' (Customer Termination.. Summary: Step by step guide and video showing how to add a telephone extension, install the first extension socket, install multiple extension sockets, run an extension sockets via a joint box, and troubleshoot a faulty connection.
Learn how to wire a telephone socket with a detailed wiring diagram. Get step-by-step instructions and tips for installing a telephone socket in your home.. Running your own Telephone Extension Socket Instructions You will find details of telephone wiring colour codes, information about which wires go where, and photos to show you what the telephone wiring should look like inside your Master Telephone Socket or telephone junction box.