Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Short message service [ISO/IEC 21990 (2002) modified]
STANDARD published on 1.2.2004
Designation standards: STN EN 301991-V1.1.1
Classification mark: 871991
Catalog number: 93254
Publication date standards: 1.2.2004
The number of pages: 85
Approximate weight : 286 g (0.63 lbs)
Country: Slovak technical standard
Category: Technical standards STN