Rst7 (16.12.2008 21:00, просмотров: 88) ответил Alex B. на хорошо, буду ждать =)))
Немного я погорячился, оказывается, стандарт требует это только для 1000BASE-T (IEEE802.3-2005 40.1.4)
1000BASE-T signaling is performed by the PCS generating continuous code-group sequences that the PMA transmits over each wire pair. The signaling scheme achieves a number of objectives including
...
j) Ability to automatically detect and correct for pair swapping and unexpected crossover connections.
k) Ability to automatically detect and correct for incorrect polarity in the connections.
l) Ability to automatically correct for differential delay variations across the wire-pairs.