Radiocommunication systems, methods and terminals are described wherein metrics associated with MLSE detecting techniques, e. The method includes selecting a layer of a first material from the at least two candidate reflective materials based at least partially on the computer modeling of the at least two candidate reflective materials. When the fault detection part detects the generation of fault in the present system line, the line switching part switches the lines from the present line to the standby line to perform communication between a terminal device and another terminal device therethrough. No manual switching or hot-key sequence by the user is required, and the active data processing system may be automatically switch among any of a number of data processing systems simply by moving the cursor across logical display area boundaries between the data processing systems. The function block includes selector for selecting an operative ATM-connection, which is assigned to said IP-link, monitor for monitoring the operability of selected ATM-connections and re-selector for reselecting a redundant ATM-connection if one of the assigned connections is detected to be inoperative. Other pollutant components that do not damage the catalyst, such as dioxins and furans, are removed by absorption in the layer area.