上述基准标准适用于公共电信网络中的中央办公室和类似类型的设施，其中需要对高空电磁脉冲（HEMP）造成的损害进行特殊测量。

This above-baseline standard applies to central offices and similar-type facilities in public telecommunications networks in which a special measure of resistance to damage from high-altitude electromagnetic pulse (HEMP) is desired.