At first glance, factors such as noise, dirt and high temperatures at blast furnaces and on cranes or rolling lines would make reliable communication in these environments seem impossible to achieve. However, clearly intelligible communication between various areas of a factory is a key factor in assuring efficient and safe production. The specific conditions prevailing in heavy industry require reliable, high-quality terminals. By providing clear speech transmission even in environments with high-volume noise, the robust ProCom industrial call stations assure smooth processes. Accessory loudspeakers, strobe lights and sound protection hoods round off systems that are suitable for extreme environments.