Digital cellular telecommunications system; Unstructured Supplementary Service Data (USSD); Stage 1 (GSM 02.90)
NORM herausgegeben am 31.3.1997
Designation standards: ETSI GTS GSM 02.90-V5.1.0
Publication date standards: 31.3.1997
The number of pages: 11
Approximate weight : 33 g (0.07 lbs)
Country: European technical standard
Kategorie: Technische Normen ETSI