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ETSI TS 123 090
M00000425
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ETSI TS 123 090 Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Unstructured Supplementary Service Data (USSD); Stage 2 (3GPP TS 23.090 version 6.1.0 Release 6)
standard by European Telecommunications Standards Institute, 12/01/2005
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