Disclosed is an instant messaging-based management system that comprises a number of terminals which can be connected to a telecommunications network and in which one respective user interface is provided for generating or processing instant messages of a telecommunication network. A central point is equipped similar to a terminal, encompassing a user interface and a central application that is set up thereupon so as to manage specific data of other system terminals, that management activity including an exchange of messages containing and/or requesting data that is to be managed by means of the instant messaging service.