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581 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
580 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
579 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
578 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
577 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
576 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
575 TTAT.3G-23.003V19.2.0 3rd Generation Partnership Project;Technical Specification Group Core Network and Terminals;Numbering, addressing and identification(Release 19) 2025-08-01
574 TTAT.3G-23.041V19.0.0 3rd Generation Partnership Project;Technical Specification Group Core Network and Terminals;Technical realization of Cell Broadcast Service (CBS)(Release 19) 2025-08-01
573 TTAT.3G-23.122V18.10.0 3rd Generation Partnership Project;Technical Specification Group Core Network and Terminals;Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode(Release 18) 2025-08-01
572 TTAT.3G-23.122V19.2.0 3rd Generation Partnership Project;Technical Specification Group Core Network and Terminals;Non-Access-Stratum (NAS) functions related to Mobile Station (MS) in idle mode(Release 19) 2025-08-01