European digital cellular telecommunications system (Phase 2). General on supplementary services (GSM 02.04)
STANDARD published on 1.12.1997
Designation standards: STN ETS 300503
Classification mark: 870503
Catalog number: 71132
Publication date standards: 1.12.1997
The number of pages: 1
Approximate weight : 3 g (0.01 lbs)
Country: Slovak technical standard
Category: Technical standards STN
Účelom tejto normy ETS je definovať odporúčanú množinu doplnkových služieb pre diaľkové služby a transportné služby.