Abstract: Cordless network terminating units (CNTn) with a remote power-feeding device are connected via U interfaces (U) to a radio communication network with digital local exchanges (DIV-O). The cordless network terminating unit (CNTn) is associated with mobile sections (MT1-MT80). The cordless network terminating units (CNTn) are connected via digital subscriber line modules (SLMD) and digital subscriber line units (DLU) via a packet switching network (Datex-P) to the data processing system (SP) of a service provider. When a connection is being set up, the authorization of the subscriber is directly checked with a database as "authentication" by the service provider. The data transmission occurs via a composite p channel of the ISDN network. This makes it possible to implement party lines and operate different service networks.