Integrated Services Digital Network (ISDN). Telephony 7 kHz, videotelephony, audiographic conference and videoconference teleservices. Digital Subscriber Signalling System No. one (DSS1) protocol. Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user
STANDARD published on 1.5.2001
Designation standards: STN EN 300267-4-V1.2.4
Classification mark: 870267
Catalog number: 17314
Publication date standards: 1.5.2001
The number of pages: 33
Approximate weight : 99 g (0.22 lbs)
Country: Slovak technical standard
Category: Technical standards STN