A-SMGCS Services (EUROCONTROL)
In its recent guidance material for A-SMGCS implementation, EUROCONTROL has removed references to 'Levels' and has opted for a functional definition. Functions/services are referred to by name, in order to avoid confusion with the ICAO Manual and to dispel the assumption that the functions need to be implemented in numerical order. There is no contradiction between the two definitions by ICAO and EUROCONTROL as they provide the same functionalities from a different perspective.