Integrated Services Digital Network (ISDN); Signalling System No.7 (SS7); ISDN User Part (ISUP) version 4 for the international interface; Part 33: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for basic services (Endorsed by Asociación Espanola de Normalización in June of 2020.)
STANDARD published on 1.6.2020
Designation standards: UNE-EN 300356-33V4.1.1
Publication date standards: 1.6.2020
Approximate weight : 300 g (0.66 lbs)
Country: Spanish technical standard
Category: Technical standards UNE