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>Then I tried another similair phone, but on a 3560CG )15.2(2)E6). Here all ports returns pair status as Normal.
May be is a bug. You can open case in cisco TAC?
Don't worry.
It is the correct result because IP Phone uses only pair A and B.
PoE uses the same pair A and B.
For 1000BaseT all apir (ABCD) are necessary.