31 with which all components of the elevator installation are connected the main control unit can also be realized by co operation of several distributed control units the main control unit 31 is coupled with a security unit 32 which has several monitors 33 loudspeaker units 34 and camera systems 35 the camera and loudspeaker system 34 35 can be distributed over the planes 30 and 40 or further planes in the building area in addition a detail view of an elevator car a 1 a 6 is schematically illustrated in fig1 the elevator car 36 is coupled with the main control unit 31 an input terminal 39 with a numeric keyboard and an indicating display is similarly disposed in the elevator car 36 an rfid chip reader 38 represents an alternative the elevator car 36 is controlled by an elevator control 37 wherein the elevator control 37 similarly receives its commands from the main control unit 31 the main control unit 31 conducts to each elevator a user profile with all necessary data for operation of the elevator thus a user profile comprises constantly updated details about the number of elevator calls which are associated with the elevator car 36 with respect to each elevator call the user profile registers the boarding and destination planes and also the point in time at which the.