Building intercom systems - Part 3-2: Application guidelines - Advanced security building intercom systems (ASBIS) (IEC 62820-3-2:2018); German version EN IEC 62820-3-2:2018
建筑内部通信系统.第3-2部分:应用指南.高级安全建筑内部通信系统(ASBIS)(IEC 62820-3-2-2018);德国版本EN IEC 62820-3-2:2018