Integrated Services Digital Network (ISDN) - Generic keypad protocol for the support of supplementary services - Digital Subscriber Signalling System No.one (DSS1) protocol - Part 1: Protocol apecification
STANDARD published on 1.7.1999
Designation standards: ČSN EN 300122-1-V1.2.4
Classification mark: 877024
Catalog number: 55975
Publication date standards: 1.7.1999
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: Czech technical standard
Category: Technical standards ČSN