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USSD-v1.0.0
- 中国移动USSD 业务终端技术规范 版本1-Terminal technical specifications USSD operations
0290-800
- 3GPP standard Digital cellular telecommunications system (Phase 2+) Unstructured Supplementary Service Data (USSD) - Stage 1 (GSM 02.90 version 8.0.0 Release 1999) -3GPP standard Digital cellular telecommunication