Abstract: The invention relates to a method for operating a mobile battery-operated personal emergency signal device, wherein a check of the charge of the battery feeding the personal emergency signal device is performed at least in the course of initiating the personal emergency signal device, wherein the operation of the personal emergency signal device is permitted by a central device depending on the result of the check. The invention further relates to an arrangement for performing the method.

Abstract: The invention relates to a method for operating a mobile battery-operated personal emergency signal device, wherein a check of the charge of the battery feeding the personal emergency signal device is performed at least in the course of initiating the personal emergency signal device, wherein the operation of the personal emergency signal device is permitted by a central device depending on the result of the check. The invention further relates to an arrangement for performing the method.

Abstract: At least two communication systems are controlled or monitored by at least one application by transmitting data from an application to a communication system or conversely from a communication system to an application. An interposed shared service receives and processes the data in each case and subsequently forwards the data. The service sends the data to the communication systems in the same data format in each case and receives the data from the communication systems. When at least one of the communication systems uses a different data format, at least one conversion unit is connected between the communication system and the service for adapting the data formats. With this arrangement it is unnecessary to preset the application to the particular data format used by the communication system to transmit control and status information.

Abstract: A telecommunication device, and associated method, for forwarding messages intended for forwarded-to subscribers, including a database which contains subscriber-related information relating to a number of forwarded-to subscribers and terminals associated with these and message formats compatible with these terminals, and a control device. On reception of a message for a forwarded-to subscriber, the control device selects via the subscriber-related information one or more terminals via which the forwarded-to subscriber can be reached, and message formats which are compatible with these terminals, converts the message with the aid of conversion modules and forwards it to the respective corresponding telecommunication network interface for transmission to the selected terminals.

Abstract: An input and output device having at least one display and a keyboard and, optionally, further input and output elements, such as a microphone, a loudspeaker, a camera, devices for coupling external appliances and/or a pointing device. The device is designed to be portable and can use an air interface for wirelessly accessing the processing capacity or computational power of a fixed data processing apparatus, for example of a PC, and the components thereof.