An ad-hoc, peer-to-peer radio access system having a series of remote terminals, where each remote terminal is capable of forming a link, or hop, of the routing of a call made by one of the series of terminals. Connection for electrically connecting electrodes and defibrillation signal generator connected to the electrodes. One of the nodes is designated as a Network Management System that provides overall network management. As a consequence of gathering the usage data, the operation of the mobile device in different changes of context can be tailored for the user. Besides, a pair of clamping devices with push rods can also be adapted to both ends of the lower beam with the same effect thereof. The color correction table decreases the color conversion amount to approximately zero when the lightness is less than a predetermined value Lmin.