Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Call identification and call linkage Additional Network Feature (ANF) [ISO/IEC 21889 (2001), modified]
STANDARD published on 1.3.2004
Designation standards: ÖNORM EN 301923-V1.1.1
Publication date standards: 1.3.2004
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: Austrian technische Norm
Category: Technical standards ÖNORM