
Private Telecommunication Network (PTN). Inter-exchange signalling protocol. Call offer supplementary service
NORM herausgegeben am 1.1.1996
    
        Designation standards: ČSN ETS 300362
                Classification mark:  879524
                
                Catalog number:  19040
                
                
               
                Publication date standards:  1.1.1996
        The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
        Country:          Czech technical standard
        Kategorie: Technische Normen ČSN