Method and mobile telecommunication network for detection of device information

The mobile telecommunication network is used for detection of device information, such as subscriber information and equipment information. The network has a mobile station with subscriber information, a base station subsystem, and a network subsystem. The network is characterized by means for detecting device information from signals sent from the mobile station, a detector for handling the detected information, and a repository for storing device information. The method is characterized by detection of device information of a mobile station that attaches to the network. The detected device information is compared with the device information stored in the network and stored if it does not correspond to the information previously stored in the network.