Failing to do so will open the blades permanently damaging the connector. Wiring inside a master socket.
Uk Telephone Wiring
Uk phone socket wiring diagram. 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. Telephone wiring colour code bt nte5 master socket. Electrical characteristics of the telephone interface are specified by individual network operators eg. Cause wire between terminals 2 or 5 broken. Check for dial tone at each socket and then ask a friend to call you back. Please note you must use the correct inserter tool to push the wires in to the phone socket idc connectors.
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. Many packets of plugs in the diy sheds come with a little diagram on the back which often follows the bs numbering. Problem very poor speech quality possibly poor. If not check the termination on pin 3 of the socket. Note that the pictorial view shown above only serves to indicate the two differing types of sockets and wiring connections. Additional information how the uk plug and socket telephone system works.
The following pictures show the standard bt telephone wiring colour code used with the 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. The connectors are specified in british standard bs 6312. Whilst the line is ringing plug a phone into each socket to ensure that it rings. In british telecoms sin 351. 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.
Gallery of Uk Phone Socket Wiring Diagram
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