GB/T 21430.1-2008

Multicore and symmetrical pair/quad cables for broadband digital communications(high bit rate digital access telecommunication networks) Outside plant cables - Part 1: Generic specification

宽带数字通信（高速率数字接入通信网络）用对绞或星绞多芯对称电缆-户外电缆　第1部分：总规范