ITU-T G.703-2002 分层数字接口的物理/电气特性 G 系列:传输系统和媒体 数字系统和网络数字终端设备 概述(第 15 研究组;勘误表 1:封面说明:07/20/2005)
Physical/Electrical Characteristics of Hierarchical Digital Interfaces - Series G: Transmission Systems and Media@ Digital Systems and Networks Digital Terminal Equipments - General (Study Group 15; Erratum 1: Covering Note: 07/20/2005)