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ETSI TS 133 203
M00000081
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ETSI TS 133 203 Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); 3G security; Access security for IP-based services (3GPP TS 33.203 version 5.12.0 Release 5)
standard by European Telecommunications Standards Institute, 10/01/2007
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