Communications system, communication method and corresponding devices

A communications method comprising:

• storing in identification modules user identifications of users of a multiplicity of mobile devices, the identification modules connected to the mobile devices,
• transmitting by one of the mobile device to a visitor location register and storing in the visitor location register the user identifications of the users,
• linking to a call number and to further user data and storing in a home location register the user identifications, the user data comprising location information for a respective user,
• transmitting the location information from the visitor location register to the home location register of a user,
• connecting by the users at least certain of the mobile devices to a low voltage grid by connecting module, the connecting module being connected to a low voltage network by a connecting plug of the connecting module via outlets of the low voltage network, and the connecting module being connected to the respective mobile device by means of an interface module of the respective connecting module, and
• communicating the respective mobile device, by power line communications module of the connecting module, via the low voltage network, with other units, which are connected to the low voltage grid via the power line communications module,
• wherein the visitor location register is connected to the low voltage grid via the power line communications module included in the visitor location register, and wherein the user identifications of mobile devices are transmitted to the visitor location register via the low voltage grid by the mobile devices.

A connecting module for a communications system including a multiplicity of mobile devices, to which an identification module is connected in each case, in which identification modules a user identification of the user of the respective mobile device is configured to be stores in each case, at least one visitor location register, to which visitor location register user identifications of the users are configured to be transmitted each by one of the mobile devices and are to be stored there, and at least one home location register, in which the user identifications are each configured to be linked to a call number and to further user data including location information for a respective user, the location information configured to be transmitted from the visitor location register to the home location register of a user,

• the connecting module is configured to connect at least certain of the mobile devices to a low voltage grid in each case by the connecting module, the connecting module comprising a connecting plug configured to connect to the low voltage grid, by which connecting plug the connecting module is configured to be connected to the low voltage grid via outlets of the low voltage grid, and the connecting module comprising an interface module configured to connect with a respective mobile device, and
• the connecting module comprises a power line communications module, by which the respective mobile device is configured to communicate via the low voltage grid with other units connected to the low voltage grid via the power line communications module, and
• the connecting module configured to store address data by which the connection module is addressable in the low voltage grid and by which the connection module is configured to be linked to associated user identifications in a visitor location resister connected to the low voltage grid via the power line communications module.