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Appendix A: Diagnosing Wiremap Faults
Appendix A lists the typical causes of wiremap failures.
Open
Wires connected to wrong pins at connector or
punchdown blocks
Faulty connections
Damaged connector
Damaged cable
Wrong pairs selected in setup
Wrong application for cable
Split Pair
Wires connected to wrong pins at connector or punchdown
block.
Reversed Pairs
Wires connected to wrong pins at connector or punchdown
block.
Crossed Pairs
Wires connected to wrong pins at connector or
punchdown block.
Mix of 568A and 568B wiring standards (12 and 36
crossed).
Crossover cables used where not needed (12 and 36
crossed).