Integrated Services Digital Network (ISDN); Call Hold (HOLD) 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 30.6.1998
Designation standards: ETSI EN 300141-4-V1.2.4
Publication date standards: 30.6.1998
The number of pages: 30
Approximate weight : 90 g (0.20 lbs)
Country: European technical standard
Category: Technical standards ETSI