Policy
Qualitative service type
Specifies an alternate link layer (Layer-2) priority value for packets with the Qualitative service type (ServiceTypeQualitative). The Packet Scheduler inserts the corresponding priority value in the Layer-2 header of the packets. If you enable this setting, you can change the default priority value associated with the Qualitative service type. If you disable this setting, the system uses the default priority value of 0. Important: If the Layer-2 priority value for this service type is specified in the registry for a particular network adapter, this setting is ignored when configuring that network adapter.
1276a47a2302 QosServiceTypeQualitative_PV Registry
Copy registry mappings
HKLM\Software\Policies\Microsoft\Windows\Psched\UserPriorityMapping\ServiceTypeQualitativePolicy notes
Specifies an alternate link layer (Layer-2) priority value for packets with the Qualitative service type (ServiceTypeQualitative). The Packet Scheduler inserts the corresponding priority value in the Layer-2 header of the packets. If you enable this setting, you can change the default priority value associated with the Qualitative service type. If you disable this setting, the system uses the default priority value of 0. Important: If the Layer-2 priority value for this service type is specified in the registry for a particular network adapter, this setting is ignored when configuring that network adapter.