In a method for detecting the state of dialling a codenumber a number already dialled digits (Nx) is counted and is compared with a defined number of digits to be dialled. If this number is reached, a timer (Tx) is started and during the runtime of the timer it is detected whether further digits are dialled. If further digits are dialled the timer is restated at every detection. If no further digit is detected, after time out of the timer a query is launched. Alternatively after launching a first query it is possible to analyse the already dialled number of digits and to define a number of digits to be dialled. If then this number is reached a timer is started and the further method is processed.