
Private Telecommunication Network (PTN); Inter-exchange signalling protocol Circuit mode basic services
STANDARD published on 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
        Category: Technical standards ETSI