Private Telecommunication Network (PTN); Inter-exchange signalling protocol Circuit mode basic services
NORMA vydána dne 12.1.1994
Designation standards: ETSI ETS 300172-ed.2
Publication date standards: 12.1.1994
The number of pages: 162
Approximate weight : 517 g (1.14 lbs)
Country: European technical standard
Kategorie: Technické normy ETSI