This subrack is typically used in Optical Fibre Termination activities, where low fusion splice losses are needed for high capacity optical fibre transmission systems, such as e.g. DWDM systems.
A major feature of this subrack is the minimum amount of movement that occurs to optical fibre loose tubes and optical fibre cords as the pivot tray opens and closes. This ensures a very high degree of protection for working services. Also, the rear located splice trays are housed in a protected position, because there is very little chance of them being disturbed, as the subracks tray is opened.