Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Simple dialog supplementary service [ISO/IEC 21408 (2003), modified]
STANDARD published on 1.7.2004
Designation standards: STN EN 301921-V1.1.1
Classification mark: 871921
Catalog number: 95778
Publication date standards: 1.7.2004
The number of pages: 35
Approximate weight : 105 g (0.23 lbs)
Country: Slovak technical standard
Category: Technical standards STN