Abstract: The invention relates to a method for operating a telecommunications network and a telecommunications network for mobile telecommunication, having a network register in which identifier of mobile terminals and network-related user data of the terminals are stored. The network register is formed from a peer-to-peer network having a multiplicity of decentralized register nodes which are networked with one another and are each associated with a geographic region. Hash tables are held in the register nodes, in which hash tables the identifiers of the terminals are stored as hash values and the user data is stored associated with these hash values. The network has at least a first node associated with a geographic region at which a terminal can register, and a second node, which is permanently assigned to the terminal and is associated with a geographic region. The terminal registers with the first node by transmitting the identifier, when it is located in the first region.

Abstract: The invention relates to a method for establishing a radio link between a non-authorized mobile radio terminal (B) and a base station (C) of a mobile radio network (D). According to the invention, an authorization is given to the mobile radio terminal (B) in order to use the base station (C) as access to the mobile radio network (D), said mobile radio terminal (B) can be authorized at least temporarily, in particular manually, and the base station (C) transmits a corresponding release notice to the mobile radio terminal (B), and a radio link between the mobile radio terminal (B) and the base station (C) of the mobile radio network (D) is established.