<?xml version="1.0" encoding="UTF-8"?>
<tsduck>
  <_descriptors>

    <announcement_support_descriptor>
      <!-- One per announcement type -->
      <announcement
          announcement_type="uint4, required"
          reference_type="uint3, required"
          original_network_id="uint16, optional"
          transport_stream_id="uint16, optional"
          service_id="uint16, optional"
          component_tag="uint8, optional"/>
    </announcement_support_descriptor>

  </_descriptors>
</tsduck>
