Integrated Services Digital Network (ISDN); Three-Party (3PTY) 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 31.10.1996
Designation standards: ETSI ETS 300188-4-ed.1
Publication date standards: 31.10.1996
The number of pages: 27
Approximate weight : 81 g (0.18 lbs)
Country: European technical standard
Category: Technical standards ETSI