We also have NEF's in our MEL/DDG, but no requirement to call MC. If it is outside the MEL/DDG/CDL/AMM/SRM then we would go to our MC and get a DOI/Concession if allowable otherwise it gets fixed.
The difference I guess between the FAA way and EASA way is we are allowed to think for ourselves and use the rules/regulations/processes and procedures without the need to call MC, once we've exhausted all avenues we would call and take it from there.