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640 TTAT.3G-23.280V19.9.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Common functional architecture to support mission critical services; Stage 2(Release 19) 2026-05-04
639 TTAT.3G-23.280V20.2.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Common functional architecture to support mission critical services; Stage 2(Release 20) 2026-05-04
638 TTAT.3G-23.281V18.12.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Functional architecture and information flows to support Mission Critical Video (MCVideo); Stage 2(Release 18) 2026-05-04
637 TTAT.3G-23.281V19.9.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Functional architecture and information flows to support Mission Critical Video (MCVideo); Stage 2(Release 19) 2026-05-04
636 TTAT.3G-23.281V20.2.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Functional architecture and information flows to support Mission Critical Video (MCVideo); Stage 2(Release 20) 2026-05-04
635 TTAT.3G-23.282V18.12.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Functional architecture and information flows to support Mission Critical Data (MCData); Stage 2(Release 18) 2026-05-04
634 TTAT.3G-23.282V19.9.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Functional architecture and information flows to support Mission Critical Data (MCData); Stage 2(Release 19) 2026-05-04
633 TTAT.3G-23.282V20.0.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Functional architecture and information flows to support Mission Critical Data (MCData); Stage 2(Release 20) 2026-05-04
632 TTAT.3G-23.283V19.5.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Mission Critical Communication Interworking with Land Mobile Radio Systems(Release 19) 2026-05-04
631 TTAT.3G-23.283V20.1.0 3rd Generation Partnership Project;Technical Specification Group Services and System Aspects;Mission Critical Communication Interworking with Land Mobile Radio Systems(Release 20) 2026-05-04