I change the "PoE Out" to "forced on" in the ethernet3, now I have this:
[admin@MikroTik] > /interface ethernet poe monitor ether3-slave-local
-- [Q quit|D dump|C-z pause]
But the phone doesn't switch on. In the back of the phone puts this:
DC IN 9V 750mA
PoE IN 48V 270mA
The problem will be with the voltage.
Someone could confirm that they are incompatible?