Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Private User Mobility (PUM); Registration supplementary service [ISO/IEC 17876 (2000) modified]
STANDARD published on 23.10.2000
Designation standards: ETSI EN 301821-V1.1.1
Publication date standards: 23.10.2000
The number of pages: 5
Approximate weight : 15 g (0.03 lbs)
Country: European technical standard
Category: Technical standards ETSI