we are currently using MA 4000 for remote maintenance of 13 PBX's. we aslo use it for sheduling backups with out having to make site trips. in my opinion it is a very powerful and useful tool when applied in the proper setting. There are some adjustments that need to be made to programming style since it is a GUI interface, but is very comprehensive. There is a free training course available from NEC.
"However beautiful the strategy, you should occasionally look at the results." Sir Winston Churchill