
Private Telecommunication Network (PTN) - Inter-exchange signalling protocol - Supplementary service interactions
NORMA vydána dne 1.12.1995
Designation standards: ÖNORM ETS 300427
Note: NEPLATNÁ
Publication date standards: 1.12.1995
The number of pages: 47
Approximate weight : 141 g (0.31 lbs)
Country: Austrian technische Norm
Kategorie: Technické normy ÖNORM