I am wiring up some RJ45 network sockets for the first time. (MK Electric part K5845 - available in UK)
If the pins in the front of the socket are numbered 1-8 left to right, then the corresponding connections on the IDC block on the rear are arranged as follows:
4 X X 56 X X 3
8 X X 17 X X 2
Why is this arrangement used?
I can see how the wires in the pair to terminals 7 and 8 are kept together, as are the pair to 1 and 2.
But you have to untwist the pair going to terminals 6 and 3, as the wires in this pair are on opposite sides of the block. You also have to untwist the pair going to 4 and 5.
If keeping the twist right up to the terminal block is important, why isn't the IDC block arrangement as follows:
4 X X 65 X X 3
8 X X 17 X X 2
or am I missing something?