A method of communicating data between a network device and a data network to which the device is connected via an optical fiber data link in which the device is connected to the optical fiber data link and the connection is monitored to detect data communication at a first standard. The system includes a source of navigation display data and an image control module. The system has a microprocessor based controller and can kill Clostridium difficile and other pathogens to thereby decontaminate items in 30 seconds or less. A nipple, inserted in a retaining ring comprising an internal thread, is fixed to the threaded neck of the rotary closure. The work platform consists thereby of foldable sidewalls, which in a transport position lie parallel with the floor and receive frame parts below themselves, which serve to complete the entire work platform.