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) (3GPP TS 23.015 version 4.0.0 Release 4)
standard published 03/01/2001 by European Telecommunications Standards Institute