Inženjering uzajamnog uticaja okoline i opreme (EE) — Uslovi sredine i ispitivanja sredine za telekomunikacionu opremu — Deo 2-4: Specifikacija ispitivanja sredine — Stacionarna upotreba na lokacijama koje nisu zaštićene od vremenskih uslova
Environmental Engineering (EE); Environmental conditions and environmental tests for telecommunications equipment; Part 2-4: Specification of environmental tests; Stationary use at non-weatherprotected locations