Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call priority interruption and call priority interruption protection supplementary services [ISO/IEC 15992 (2003), modified]
NORMA vydaná dňa 1.3.2004
Designation standards: ÖNORM EN 301656-V1.2.1
Publication date standards: 1.3.2004
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: Austrian technische Norm
Kategória: Technické normy ÖNORM