DS EN 50377-9-2:2004 Connector Sets And Interconnect Components To Be Used In Optical Fibre Communication Systems - Product Specifications - Part 9-2: Type Mt-Rj Terminated On Iec 60793-2 Category B1.1 Singlemode Fibre Describes the initial, start of life dimensional, optical, mechanical and environmental performance requirements which a terminated and assembled multimode MT-RJ connector set (plug adaptor plug) must