EN 50090-4-2-2004 家用和建筑物用电子系统(HBES).第4-2部分:介质独立层.1类HBES传输层,网络层和数据链路层的通用部分;替代R205-008-1996
Home and Building Electronic Systems (HBES) Part 4-2: Media independent layers - Transport layer, network layer and general parts of data link layer for HBES Class 1