1. Method for managing the signalling software (SS) of a V5 interface (V5 ) connecting a first network element (LE) and a second network element (AN) in a system comprising a management network (Q pc ) connected to the first and second network elements, characterized in that a parameter set is generated which contains at least one parameter controlling a given function in the signalling software (SS) of the V5 interface (V5); and a parameter set corresponding to the parameters of the V5 interface in question is selected as an active parameter set to be used to control the operation of the signalling software.