Thank you guys.
Please look at my second request http://forum.mikrotik.com/viewtopic.php?f=3&t=62777
Yes we use DC-DC convertors from battery pack (32-56V) to stable 24V, but every piece of some hardware is some kind of possible problem. So we like to see less hardware than complicated solutions.
We dont want to use converter for each unit, we like to use our Poe concentrated panels like this
but its just passive 100Mbit version.
So we are now looking for buy or build 1Gbit version.
Please dont missunderstand me, i am not searching Bugs. We are just on the way to use RBs like profesional sollution using profesional methods, like -48V batery supply, poe pannels, racks, antena towers etc.... We discover that the right way leads to solid network we like.