Abstract: The invention relates to a procedure for carrying out checking functions relating to safety management in a mobile communication network and/or in a wireless local network during call setup. In the procedure, information about the degree of occupancy of a data processing apparatus implementing the checking functions in a network element, such as a mobile communication switching center and/or the access node of a wireless local network, is continuously determined, the frequency of execution of the checking functions is adjusted based on the occupancy information thus determined, and checking functions are carried out on the calls according to the checking frequency defined for the respective degree of occupancy.