In one aspect, a method for operating a communication network comprising a plurality of nodes, whereby a databank is stored in shared manner among the nodes is provided. A first node extracts from the databank identification data for identifying and/or addressing the first node by a correspondent for recording, initiated by the first node, of a communication with the correspondent of an external communication system. In another embodiment, when the recording of a communication with a first node is initiated by a correspondent of an external communication system, a notification concerning the recording of the communication initiated by the correspondent by means of the databank can be supplied to a second node and the correspondent is then tracked. A for implementing the method is also provided.