Digital cellular telecommunications system (Phase 2) - Mobile radio interface layer 3 specification ( GSM 04.08 version 4.21.1)
STANDARD published on 1.7.1999
Designation standards: ČSN ETS 300557-ed.10
Classification mark: 872628
Catalog number: 55929
Publication date standards: 1.7.1999
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: Czech technical standard
Category: Technical standards ČSN