1.		EN 50116 : information technology equipment: routine electrical safety testing in production / European Commitee for Electrothecnical Standardization Data Publicação: 1996 Tema: Normas
2.		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 Data Publicação: 1996 Tema: Normas
3.		EN 50098-1 : customer premises cabling for information technology: part 1: ISDN basic access / European Commitee for Electrothecnical Standardization Data Publicação: 1996 Tema: Normas