UNE-EN 301483-2V1.1.1

Private Integrated Services Network (PISN);Inter-exchange signalling protocol;Advice of Charge (AoC) supplementary services [ISO/IEC 15049 (1997), modified];Part 2: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma (Endorsed by Asociación Espanola de Normalización in November of 2021.)