Additional information how the uk plug and socket telephone system works. Many packets of plugs in the diy sheds come with a little diagram on the back which often follows the bs numbering.
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Uk phone socket wiring diagram. Cause wire between terminals 2 or 5 broken. Telephone wiring colour code bt nte5 master socket. Phone ringing continuously cause terminals 2 and 5 swapped between sockets 2 at one socket connected to 5 on another and vice versa problem no ringing cause terminal 3 disconnected problem ringing but no speech or very poor speech and cant dial out. Note that the pictorial view shown above only serves to indicate the two differing types of sockets and wiring connections. Wiring inside a master socket. Failing to do so will open the blades permanently damaging the connector.
Electrical characteristics of the telephone interface are specified by individual network operators eg. Whilst the line is ringing plug a phone into each socket to ensure that it rings. British telephone sockets were introduced in their current plug and socket form on 19 november 1981 by british telecom to allow subscribers to connect their own telephones. The connectors are specified in british standard bs 6312. Problem very poor speech quality possibly poor. If not check the termination on pin 3 of the socket.
Please note you must use the correct inserter tool to push the wires in to the phone socket idc connectors. The following pictures show the standard bt telephone wiring colour code used with the bt nte5 master socket. Check for dial tone at each socket and then ask a friend to call you back. Contrary to how it might seem c1 is connected to terminals 2 3 not 1 4. The wiring diagram for a master lju socket is shown here. In british telecoms sin 351.
If you do the logical thing and put a plug on assuming the numbers are as on the socket the phone may not ring and as adrian graham who asked for this section to be included found.
Gallery of Uk Phone Socket Wiring Diagram
