ETSI TS 123 015
ETSI TS 123 015
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Technical realization of Operator Determined Barring (ODB) (3G TS 23.015 version 3.1.0 Release 1999)
standard published 01/01/2000 by European Telecommunications Standards Institute