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ETSI - European Telecommunication Standard Institute(ETSI) produces globally-applicable standards for information and telecommunication technologies (ICT) including land, mobile, radio, converged, broadcast and internet technologies.
Publicly Available Specification (PAS); A1 interface: General Aspects and Principles (O-RAN.WG2.A1GAP-R004-v04.0.0)
Standard published on 7.5.2025
Selected format:Publicly Available Specification (PAS); A1 interface: Use Cases and Requirements (O-RAN.WG2.A1UCR-R003-v01.01)
Standard published on 23.1.2024
Selected format:Publicly Available Specification (PAS); A1 interface: Use Cases and Requirements (O-RAN.WG2.A1UCR-R004-v01.04)
Standard published on 7.5.2025
Selected format:Publicly Available Specification (PAS); A1 interface: Transport Protocol (O-RAN.WG2.A1TP-R003-v02.01)
Standard published on 23.1.2024
Selected format:Publicly Available Specification (PAS); A1 interface: Transport Protocol (O-RAN.WG2.A1TP-R004-v03.03)
Standard published on 7.5.2025
Selected format:Publicly Available Specification (PAS); A1 interface: Application Protocol; (O-RAN.WG2.A1AP-R003-v04.00)
Standard published on 23.1.2024
Selected format:Publicly Available Specification (PAS); A1 interface: Application Protocol (O-RAN.WG2.A1AP-R004-v04.03)
Standard published on 7.5.2025
Selected format:Publicly Available Specification (PAS); A1 interface: Type Definitions (O-RAN.WG2.A1TD-R003-v05.00)
Standard published on 23.1.2024
Selected format:Publicly Available Specification (PAS); A1 interface: Type Definitions (O-RAN.WG2.A1TD-R004-v09.0.0)
Standard published on 7.5.2025
Selected format:Publicly Available Specification (PAS); A1 interface: Test Specification (O-RAN.WG2.A1TS-R003-v03.00)
Standard published on 23.1.2024
Selected format:Latest update: 2026-09-02 (Number of items: 2 300 083)
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