EN 50083-9 [documento electrónico] : cable networks for television signals, sound signals and interactive services: part 9: interfaces for CATV/SMATV headends and similar professional equipment for DVB/MPEG-2 transport streams / European Committee for Electrotechnical Standardization
EN 50086 -2-4/A1 [documento electrónico] : conduit systems for electrical installations: part 2-4: particular requirements for conduit systems buried underground / European Commitee for Electrothecnical Standardization
EN 50098-1/A1 [documento electrónico] : customer premises cabling for information technology: part 1: ISDN basic access / European Committee for Electrotechnical Standardization
EN 50098-2 : customer premises cabling for information technology: part 2: 2048 kbit/s ISDN primery access and leased line network interface / European Committee for Electrotechnical Standardization