Digital cellular telecommunications system (Phase 2+) - Mobile radio interface layer 3 - Supplementary services specification - Formats and coding (GSM 04.80 version 5.2.1)
STANDARD published on 1.12.1999
Designation standards: ČSN ETS 300950-ed.3
Classification mark: 872725
Catalog number: 57271
Publication date standards: 1.12.1999
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: Czech technical standard
Category: Technical standards ČSN