O-RAN specifications lead the telecom industry towards Open and Intelligent Radio Access Networks

O-RAN specifications are available to general public upon agreement to the O-RAN Alliance Adopter License Agreement.

In order to download any of the below specifications and resources, you must read and agree to the O-RAN Alliance Adopter License Agreement. After registration, a password will be sent to your registration email. This email will include a link to the specification download page.

Published O-RAN specifications

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O-RAN Fronthaul Control, User and Synchronization Plane & Fronthaul Management Plane

O-RAN Fronthaul Control, User and Synchronization Plane Specification Version 2.0 - July 2019
O-RAN Fronthaul Management Plane Specification Version 2.0 - July 2019
O-RAN Fronthaul Yang Models - July 2019

O-RAN Fronthaul Control, User and Synchronization Plane Specification Version 1.0 - March, 2019
O-RAN Fronthaul Management Plane Specification Version 1.0 - March, 2019
O-RAN Fronthaul Yang Models - March, 2019


O-RAN Operations and Maintenance

O-RAN Operations and Maintenance Architecture (O-RAN-WG1.OAM Architecture -v01.00) - July 2019

O-RAN Operations and Maintenance Interface Specification (O-RAN-WG1.OAM Interface Specification-v1.0) - July 2019


O-RAN Base Station O-DU and O-CU Software Architecture and APIs

O-RAN Base Station O-DU and O-CU Software Architecture and APIs (ORAN-WG8.AAD-v01.0.0) - July 2019


O-RAN NR U-Plane Profile & NR C-Plane Profile

O-RAN Open F1/W1/E1/X2/Xn Interfaces Working Group NR U-plane profile for EN-DC - June, 2019
O-RAN Open F1/W1/E1/X2/Xn Interfaces Working Group NR C-plane profile for EN-DC - June, 2019
O-RAN Open F1/W1/E1/X2/Xn Interfaces Working Group EN-DC C-Plane Table - June, 2019


O-RAN Non-Real-Time RAN Intelligent Controller & A1 Interface Use Case Requirements

O-RAN Non-real-time RAN Intelligent Controller & A1 interface Use Case Requirements Specification Version 1.0 - June 2019