Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Advice of charge supplementary services [ISO/IEC 15050 (2003), modified]
NORMA vydána dne 6.1.2004
Designation standards: ETSI EN 301264-V1.2.1
Publication date standards: 6.1.2004
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: European technical standard
Kategorie: Technické normy ETSI