Countless web pages, probably including the manufacturer of the jacks
you are using, have color-coded diagrams of which wires go in which
slots for the A and B wiring patterns. I think the ones the Borg sells
even have a diagram on the card, or a stack of brochures from the
manufacturer. Play close attention to where it says to maintain the
twist for each pair to within a half-inch of the slots.
Now that I look at it, that wall jack diagram seems to be for the 'a'
pattern. But the pin numbers are correct, so you can just match the
colors up with the pin numbers on the 'b' diagram on the first link.
(I'm lazy, and don't have a punchdown tool any more. I just use premade
No wonder the wiring label didn't make any sense! I checked the
jack with a continuity tester. This is what I expected:
And here is what I found (it matches the label):
1236 and 8754 would almost make sense. The way they did it has a
lot of unnecessary crosses. At least now I know how to hook it up.
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