ETSI EN 301 483-2
ETSI EN 301 483-2
Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Advice of Charge (AoC) supplementary services; Part 2: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification
standard published 01/01/2002 by European Telecommunications Standards Institute
