Integrated Services Digital Network (ISDN) - Telephony 7 kHz, videotelephony, audiographic conference and videoconference teleservices - Digital Subscriber Signalling System No.one (DSS1) protocol - Part 1: Protocol specification
STANDARD published on 1.4.1999
Designation standards: ČSN EN 300267-1-V1.2.2
Classification mark: 877044
Catalog number: 54779
Publication date standards: 1.4.1999
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: Czech technical standard
Category: Technical standards ČSN