Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Short message service
STANDARD published on 1.4.2003
Designation standards: ČSN ISO/IEC 21990
Classification mark: 369268
Catalog number: 67039
Publication date standards: 1.4.2003
The number of pages: 84
Approximate weight : 283 g (0.62 lbs)
Country: Czech technical standard
Category: Technical standards ČSN