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ETSI TS 124 090
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ETSI TS 124 090 Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Unstructured Supplementary Service Data (USSD); Stage 3 (3GPP TS 24.090 version 14.0.0 Release 14)
standard by European Telecommunications Standards Institute, 03/01/2017
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Full Description
ETSI TS 124 090 gives the stage 3 description of the Unstructured Supplementary Service Data (USSD)operations.The group of unstructured supplementary service data operations is divided into two different classes:Network initiated unstructured supplementary service data operations (clause 5);Mobile initiated unstructured supplementary service data operations (clause 6).