2012.08.22 16:21, jedas rašė:
> Wiki sako kad galima jeigu teisingai viduj sujungta. Panaudoja atskiru poru
> laidus.
>
>   This permits its use not only with 10BASE-T and 100BASE-TX, which use only
> two of the four pairs in the cable, but also with 1000BASE-T (gigabit
> Ethernet), which uses all four pairs for data transmission. This is possible
> because all versions of Ethernet over twisted pair cable specify
> differential data transmission over each pair with transformer coupling; the
> DC supply and load connections can be made to the transformer center-taps at
> each end. Each pair thus operates in common mode as one side of the DC
> supply, so two pairs are required to complete the circuit.

bet tokiu atveju PoE atskiriama ant skiriamųjų trafų. Todėl arba įstatai 
PoE dalį į įrenginį ( jep - pjaustymas, litavimas), arba injektorius bus 
brangesnis, net skiriamieji trafai turės būti įmontuoti jame.

-- 
ejs