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No. 표준번호 표준명 제/개정일 ▼
12440 TTAT.3G-21.918V18.0.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Release 18 Description; Summary of Rel-18 Work Items(Release 18) 2025-08-01
12439 TTAT.3G-22.101V20.0.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Service aspects; Service principles(Release 20) 2025-08-01
12438 TTAT.3G-22.179V20.0.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Mission Critical Push to Talk (MCPTT); Stage 1(Release 20) 2025-08-01
12437 TTAT.3G-22.261V17.14.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Service requirements for the 5G system(Release 17) 2025-08-01
12436 TTAT.3G-22.261V18.17.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Service requirements for the 5G system(Release 18) 2025-08-01
12435 TTAT.3G-22.261V19.10.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Service requirements for the 5G system(Release 19) 2025-08-01
12434 TTAT.3G-22.261V20.2.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Service requirements for the 5G system(Release 20) 2025-08-01
12433 TTAT.3G-22.280V19.7.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Mission Critical Services Common Requirements (MCCoRe); Stage 1(Release 19) 2025-08-01
12432 TTAT.3G-22.280V20.0.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Mission Critical Services Common Requirements (MCCoRe); Stage 1(Release 20) 2025-08-01
12431 TTAT.3G-22.989V20.3.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Study on Future Railway Mobile Communication System(Release 20) 2025-08-01