2005-2008 ITU-T SG 5 Recommendations

K series : Protection against interference

K.5 : Joint use of poles for electricity distribution and for telecommunications

K.6 : Precautions at crossings

K.7 : Protection against acoustic shock

K.8 : Separation in the soil between telecommunication cables and earthing system of power facilities

K.9 : Protection of telecommunication staff and plant against a large earth potential due to a neighbouring electric traction line

K.10 : Low frequency interference due to unbalance about earth of telecommunication equipment

K.11 : Principles of protection against overvoltages and overcurrents

K.12 : Characteristics of gas discharge tubes for the protection of telecommunications installations

K.13 : Induced voltages in cables with plastic-insulated conductors

K.14 : Provision of a metallic screen in plastic-sheathed cables

K.18 : Calculation of voltage induced into telecommunication lines from radio station broadcasts and methods of reducing interference

K.19 : Joint use of trenches and tunnels for telecommunication and power cables

K.20 : Immunity of telecommunication equipment installed in a telecommunications centre to overvoltages and overcurrents

K.21 : Immunity of telecommunication equipment installed in customer premises to overvoltages and overcurrents

K.23 : Types of induced noise and description of noise voltage parameters for ISDN basic user networks

K.24 : Method for measuring radio-frequency induced noise on telecommunications pairs

K.25 : Protection of optical fibre cables

K.26 : Protection of telecommunication lines against harmful effects from electric power and electrified railway lines

K.27 : Bonding configurations and earthing inside a telecommunication building

K.28 : Characteristics of semi-conductor arrester assemblies for the protection of telecommunications installations

K.29 : Coordinated protection schemes for telecommunication cables below ground

K.30 : Self-restoring overcurrent protectors

K.34 : Classification of electromagnetic environmental conditions for telecommunication equipment � Basic EMC Recommendation

K.35 : Bonding configurations and earthing at remote electronic sites

K.36 : Selection of protective devices

K.37 : Low and high frequency EMC mitigation techniques for telecommunication installations and systems � Basic EMC Recommendation

K.38 : Radiated emission test procedure for physically large systems

K.39 : Risk assessment of damages to telecommunication sites due to lightning discharges

K.40 : Protection against LEMP in telecommunications centres

K.42 : Preparation of emission and immunity requirements for telecommunication equipment � General principles

K.43 : Immunity requirements for telecommunication equipment

K.44 : Resistibility tests for telecommunication equipment exposed to overvoltages and overcurrents - Basic Recommendation

K.45 : Immunity of telecommunication equipment installed in the access and trunk networks to overvoltages and overcurrents

K.46 : Protection of telecommunication lines using metallic symmetric conductors against lightning-induced surges

K.47 : Protection of telecommunication lines using metallic conductors against direct lightning discharges

K.48 : EMC requirements for telecommunication equipment � Product family Recommendation

K.49 : Test requirements and performance criteria for voice terminal telephones subject to disturbance from digital mobile telecommunications systems

K.50 : Safe limits of operating voltages and currents for telecommunication systems powered over the network

K.51 : Safety criteria for telecommunication equipment

K.52 : Guidance on complying with limits for human exposure to electromagnetic fields

K.54 : Conducted immunity test method and level at fundamental power frequencies

K.55 : Overvoltage and overcurrent requirements for insulation displacement connectors (IDC) terminations

K.56 : Protection of radio base stations against lightning discharges

K.57 : Protection measures for radio base stations sited on power line towers

K.58 : EMC, resistibility and safety requirements and guidance for determining responsibility under co-located telecommunication installations

K.59 : EMC, resistibility and safety requirements and procedures for connection to unbundled cables

K.60 : Emission levels and test methods for wireline telecommunication networks to minimize electromagnetic disturbance of radio services

K.61 : Guidance on measurement and numerical prediction of electromagnetic fields for compliance with human exposure limits for telecommunication installations

K.62 : System level radiated emissions compliance using mathematical modelling

K.63 : Maintaining the suitability of production telecommunications equipment to its intended electromagnetic environment

K.64 : Safe working practices for outside equipment installed in particular environments

K.65 : Overvoltage and overcurrent requirements for termination modules with contacts for test ports or SPDs

K.66 : Protection of customer premises from overvoltages

K.67 : Expected surges on telecommunications and signalling networks due to lightning

K.68 : Operator responsibilities in the management of electromagnetic interference by power systems on telecommunication systems

K.69 : Maintenance of protective measures

K.70 : Mitigation techniques to limit human exposure to EMFs in the vicinity of radiocommunication stations

K.71 : Protection of customer antenna installations

K.72 : Protection of telecommunication lines using metallic conductors against lightning: Risk management

K.73 : Shielding and bonding for cables between buildings

K.74 (draft) : EMC, resistibility, safety requirements for home network devices

K.75 : Classification of interface for application of standards on resistibility and safety of telecommunication equipment

K.76 : EMC requirements for telecommunication network equipment (9 kHz - 150 kHz)