Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Private User Mobility (PUM); Registration supplementary service [ISO/IEC 17876 (2003), modified]
NORMA vydána dne 6.1.2004
Designation standards: ETSI EN 301821-V1.2.1
Publication date standards: 6.1.2004
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: European technical standard
Kategorie: Technické normy ETSI