This Recommendation defines classification of the electromagnetic environmental conditions encountered where telecommunication equipment is installed.

This Recommendation applies to telecommunication equipment installed in telecommunication centres, outdoor locations and customer premises. It does not make references to equipment dependent details.

Telecommunication equipment intended for installations in industrial environment, power station and sub-station environments and in railways environment are not covered by this Recommendation because they are already covered by specific EMC standards, e.g., [b-IEC 61000-6-5], [b-IEC 62236-4] and [b-IEC 61000-6-2].