
Private Telecommunication Network (PTN) - Inter-exchange signalling protocol - Diversion supplementary services
NORMA vydána dne 1.4.1994
Designation standards: ÖNORM ETS 300257
Note: NEPLATNÁ
Publication date standards: 1.4.1994
The number of pages: 65
Approximate weight : 195 g (0.43 lbs)
Country: Austrian technische Norm
Kategorie: Technické normy ÖNORM