Human Factors (HF); Symbols to identify telecommunications facilities for the deaf and hard of hearing people
NORMA vydaná dňa 21.3.2000
Designation standards: ETSI EN 301462-V1.1.1
Publication date standards: 21.3.2000
The number of pages: 21
Approximate weight : 63 g (0.14 lbs)
Country: European technical standard
Kategória: Technické normy ETSI