UNE-EN 302092-4V1.1.1

Broadband Integrated Services Digital Network (B-ISDN) and Broadband Private Integrated Services Network (B-PISN);Digital Subscriber Signalling System No. two (DSS2) and Broadband QSIG (B-QSIG) protocols;Call control specification in separated call and bearer control environment;Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification (Endorsed by Asociación Espanola de Normalización in January of 2022.)