Integrated Services Digital Network (ISDN). Closed User Group (CUG) supplementary service. 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 300138-4-V1.4.3
Classification mark: 870138
Catalog number: 17302
Publication date standards: 1.5.2001
The number of pages: 27
Approximate weight : 81 g (0.18 lbs)
Country: Slovak technical standard
Category: Technical standards STN