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

    <emergency_information_descriptor>
      <!-- One entry per event -->
      <event service_id="uint16, required"
             started="bool, required"
             signal_level="uint1, required">
        <!-- One entry per area code -->
        <area code="uint12, required"/>
      </event>
    </emergency_information_descriptor>

  </_descriptors>
</tsduck>
