Digital cellular telecommunications system (Phase 2) (GSM); Mobile radio interface layer 3; Supplementary services specification; Formats and coding (GSM 04.80)
STANDARD published on 30.8.1996
Designation standards: ETSI ETS 300564-ed.2
Publication date standards: 30.8.1996
The number of pages: 49
Approximate weight : 147 g (0.32 lbs)
Country: European technical standard
Category: Technical standards ETSI