The following OMA DRM v2.1 features are supported:
Metering
Allows the rights issuer to collect content usage data. Mostly used in subscription-based services.
O4a and O4v media type extensions
O4a indicates that the media type of the content object in the DRM content format is audio. O4v indicates video content.
WAP binary XML (WBXML) rights object acquisition protocol (ROAP) trigger
Use the DRM CAF Agent API to implement the OMA DRM v2.1 features in applications.