UNE-EN 301062-4V1.1.1

Integrated Services Digital Network (ISDN);Signalling System No.7 (SS7);Support of Virtual Private Network (VPN) applications with Private network Q reference point Signalling System number 1 (PSS1) information flows;Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification (Endorsed by Asociación Espanola de Normalización in September of 2021.)