Communication method for transmission of encrypted e.g. digital speech data from e.g. fixed telephone station to terminal that transmits data to terminal station, involves forwarding data via medium to decode data at station

摘要

The method involves decoupling data in a digital form in an encrypted manner, where data is transmitted in a Terrestrial trunked radionetwork. The data is forwarded via a medium to decode the data at a terminal station. The digital encrypted data transmission is implemented in a coded network. The medium includes Global system for mobile communication, Universal mobile telecommunications systemand General packet Radio service. Individual/group calls, which are related to a component of the terminal, are transmitted to a loud-speaker. An independent claim is also included for a terminal for transmission of the encrypted digital speech- and information data from the source to the terminal.