ETSI TS 132 005 Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Telecommunication Management; Charging and billing; 3G call and event data for the Circuit Switched (CS) domain (3GPP TS 32.005 version 3.3.1 Release 1999)

standard by European Telecommunications Standards Institute, 12/01/2000