Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Call priority interruption and call priority interruption protection supplementary services; [ISO/IEC 15992 (1998), modified]
NORMA vydána dne 25.8.1999
Designation standards: ETSI EN 301656-V1.1.1
Publication date standards: 25.8.1999
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: European technical standard
Kategorie: Technické normy ETSI