Integrated Services Digital Network (ISDN) - Direct Dialling In (DDI) supplementary service - Digital Subscriber Signalling System No.one (DSS1) protocol - Part 1: Protocol specification
STANDARD published on 1.6.1999
Designation standards: ČSN EN 300064-1-V1.3.4
Classification mark: 877013
Catalog number: 55939
Publication date standards: 1.6.1999
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Category: Technical standards ČSN