European digital cellular telecommunications system (Phase 2);Call Waiting (CW) and Call Hold (HOLD) supplementary services;Stage 2 (GSM 03.83) (Endorsed by Asociación Espanola de Normalización in October of 2022.)
NORMA vydaná dňa 1.10.2022
Designation standards: UNE-ETS 300544ED1
Publication date standards: 1.10.2022
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Kategória: Technické normy UNE