Gripping claws and pairs of arched angular profiles are arranged along the perimeter of a cylindrical surface segment so as to grip the edges of a fuselage panel, closing the opening of a pressurizable chamber. As well as backing up and transferring critical data files during the disaster recovery operation, the present invention also transfers, inter alia, applications, user states, hardware settings, software settings, user preferences and other user settings, menus, and directories. As such the more timely service or substitution for that replaceable element in the system can be provided, thereby allowing costs and service down-time to be minimized. The standby medium thus may be in a power-saving mode or in a power-off mode. The conditional or consequential rights are activated by one or more trigger events that allow or restrict access to one or more documents by one or more users. The processed stereo pairs of video images are transmitted to the respective participants.