Message sent from Device to RI to establish an RI context. association. Message sent from RI to Device in response to a deviceHello message. Message sent from Device to RI to request registration. Message sent from RI to Device in response to a registrationRequest message. Message sent from Device to RI to request an RO. Message sent from RI to Device in response to a roRequest message. General PDU for sending domain-related requests from a Device to an RI. Message sent from RI to Device in response to a joinDomainRequest message. Message sent from RI to Device in response to a leaveDomainRequest message. Message used to trigger the device to initiate a Rights Object Acquisition Protocol.