NF P98-050-1:2006 Underground telecommunications works for vehicular and pedestrians traffic areas - Part 1 : telecommunications chambers - Requirements, testing, marking.
2016NF P98-050-1:2016 Ouvrages souterrains d'hébergement de réseaux secs - Partie 1 : chambres de tirage et de raccordements
2006NF P98-050-1:2006 Underground telecommunications works for vehicular and pedestrians traffic areas - Part 1 : telecommunications chambers - Requirements, testing, marking.