A first network is structured according to a first technology, especially a data network, comprising one or several network devices and/or interfaces, which are configured to establish communication with at least one station using the first technology and have basic functions for autonomous operation of the first network. In order to be able to collect subscriber-related data from a data source outside the network, especially a second network structured according to a second technology, more particularly a cellular mobile telephone network, when a subscriber who is not registered in the first network is connected, one of the two networks generically enables logical functions of components of the other network. A network facility enables the implementation of the above-mentioned method.
