==== cell_frequency_link_descriptor

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

[source,xml]
----
<cell_frequency_link_descriptor>

  <!-- One per cell -->
  <cell cell_id="uint16, required" frequency="FrequencyHz, required">
    <!-- One per subcell -->
    <subcell cell_id_extension="uint8, required"
             transposer_frequency="FrequencyHz, required"/>
  </cell>

</cell_frequency_link_descriptor>
----
