Abstract: A system for managing a telecommunications network comprises a core part storing all objects used by the system as master copies, and at least one peripheral part containing applications stored in the user workstation, through which applications the services of the system are offered to the user, each peripheral part having separately stored copies of objects used by the applications of the peripheral part concerned. The actions made by an application and the changes resulting from said actions are recorded, and an indication of the actions is transmitted from the application to the core part. When the network to be managed sends an indication of a change, the indication is transmitted to those applications that have copies of the objects to which the change relates.