European digital cellular telecommunications system (Phase 2). Unstructured Supplementary Services Data (USSD) - stage 2 (GSm 03.90)
STANDARD published on 1.8.1996
Designation standards: ČSN ETS 300549
Classification mark: 872640
Catalog number: 19976
Publication date standards: 1.8.1996
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Category: Technical standards ČSN