IEC 61156-5-1-2007
数字通信用对绞或星绞多芯对称电缆.第5-1部分:传输特性<1000MHz的星绞多芯对称电缆.水平层布线.空白详细规范
Multicore and symmetrical pair/quad cables for digital communications - Part 5-1: Symmetrical pair/quad cables with transmission characteristics up to 1000 MHz - Horizontal floor wiring - Blank detail specification