Integrated Services Digital Network (ISDN). Freephone (FPH) supplementary service. Digital Subscriber Signalling System No. one (DSS1) protocol. Part 1: Protocol specification
NORM herausgegeben am 1.4.2002
Designation standards: STN EN 300210-1-V1.2.4
Classification mark: 870210
Catalog number: 19954
Publication date standards: 1.4.2002
The number of pages: 27
Approximate weight : 81 g (0.18 lbs)
Country: Slovak technical standard
Kategorie: Technische Normen STN