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M00004206
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ETSI TS 124 629
Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Explicit Communication Transfer (ECT) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification (3GPP TS 24.629 version 9.1.0 Release 9)standard by European Telecommunications Standards Institute, 01/01/2013
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