==== linkage_descriptor

Defined by DVB in <<ETSI-300-468>>.

[source,xml]
----
<linkage_descriptor
    transport_stream_id="uint16, required"
    original_network_id="uint16, required"
    service_id="uint16, required"
    linkage_type="uint8, required">
  <!-- if linkage_type == 0x08 -->
  <mobile_handover_info
      handover_type="uint4, required"
      origin_type="NIT|SDT, required"
      network_id="uint16, required if hand-over_type is 0x01, 0x02, 0x03"
      initial_service_id="uint16, required if origin_type is NIT"/>
  <!-- else if linkage_type == 0x0D -->
  <event_linkage_info
      target_event_id="uint16, required"
      target_listed="bool, required"
      event_simulcast="bool, required"/>
  <!-- else if linkage_type >= 0x0E && linkage_type <= 0x1F -->
  <extended_event_linkage_info>
    <!-- For each event -->
    <event
        target_event_id="uint16, required"
        target_listed="bool, required"
        event_simulcast="bool, required"
        link_type="uint2, required"
        target_id_type="uint2, required"
        user_defined_id="uint16, required if target_id_type == 3"
        target_transport_stream_id="uint16, required if target_id_type == 1"
        target_original_network_id="uint16, optional"
        target_service_id="uint16, optional"/>
  </extended_event_linkage_info>
  <private_data>
    Hexadecimal content
  </private_data>
</linkage_descriptor>
----
