ETSI TS 122 003
ETSI TS 122 003
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Circuit Teleservices supported by a Public Land Mobile Network (PLMN) (3G TS 22.003 version 3.2.0 Release 1999)
standard published 03/01/2000 by European Telecommunications Standards Institute
