DIN EN 60870-6-2:1997
远动设备和系统.第6部分:与ISO标准和ITU-T推荐标准兼容的远动协议.第2节:基础标准(OSI--1层至4层)的使用
Telecontrol equipment and systems - Part 6: Telecontrol protocols compatible with ISO standards and ITU-T recommendations; section 2: Use of basic standards (OSI layers 1-4) (IEC 60870-6-2:1995); German version EN 60870-6-2:1995