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ETSI TS 123 226
M00001513
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ETSI TS 123 226 Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Global text telephony (GTT); Stage 2: Architecture (3GPP TS 23.226 version 7.0.0 Release 7)
standard by European Telecommunications Standards Institute, 07/01/2007
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