
Digital cellular telecommunications system (Phase 2) (GSM); General on supplementary services (GSM 02.04) (Endorsed by AENOR in April of 2006.)
STANDARD published on 1.4.2006
Designation standards: UNE-ETS 300503ED2
Publication date standards: 1.4.2006
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Category: Technical standards UNE