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 18.5.2000
Designation standards: ETSI EN 300138-4-V1.4.3
Publication date standards: 18.5.2000
The number of pages: 27
Approximate weight : 81 g (0.18 lbs)
Country: European technical standard
Category: Technical standards ETSI