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There are quality_of_service_qos_policies parameters defined within the main data_distribution_service_dds specification and some are defined within the DDS Security specification
a. Standard QoS Policies b. Vendor Extensions
The following list of DDS Quality of Service (QoS) are listed in the order they appear in the DDS Specification rather than in Alphabetical order. See DDS Spec 2.2.3 Supported QoS
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In addition to these standardized DDS QoS parameters, each vendor can offer QoS which are specific to their product. See the individual vendors for the details about these additional QoS parameters.