ITU-T K.33-1996 Limits for People Safety Related to Coupling into Telecommunications System form A.C. Electric Power and A.C. Electrified Railway Installations in Fault Conditions - Series K: Protection Against Interference Study Group 5; 19 pp
ITU-T K.53-2000 Values of Induced Voltages on Telecommunication Installations to Establish Telecom and A.C. Power and Railway Operators Responsibilites Series K: Protection Against Interference Study Group 5
ITU-T L.10-2002 Optical Fibre Cables for Duct and Tunnel Application - Series L: Construction Installation and Protection of Cable and Other Elements of Outside Plant Study Group VI; 9 pp*， 2023-12-23 Update
ITU-T L.12-2000 Optical Fibre Joints Series L: Construction, Installation and Protection of Cables and Other Elements of Outside Plant Study Group 6
ITU-T L.150-1998 Installation of optical fibre cables in the access network
ITU-T L.151-1998 Installation of Optical Fibre Ground Wire (OPGW) cable
ITU-T L.201-2003 Performance requirements for passive optical nodes: Sealed closures for outdoor environments
ITU-T L.26-2002 Optical Fibre Cables for Aerial Application Study Group 6*， 2023-12-23 Update