Optical fibre cables - Part 3-21: Outdoor cables - Product specification for optical self-supporting aerial telecommunication cables for use in premises cabling (IEC 60794-3-21:2015); German version EN 60794-3-21:2016
光纤电缆.第3-21部分:室外电缆.房屋布线用光纤自支撑空中通信电缆的产品规范(IEC 60794-3-21-2015);德文版EN 60794-3-21:2016