freeswitch/conf/minimal/autoload_configs/cdr_csv.conf.xml

<configuration name="cdr_csv.conf" description="CDR CSV Format">
  <settings>
    <param name="default-template" value="example"/>
    <param name="rotate-on-hup" value="true"/>
    <param name="legs" value="ab"/>
  </settings>

  <templates>
    <template name="example">"${caller_id_name}","${caller_id_number}","${destination_number}","${context}","${start_stamp}","${answer_stamp}","${end_stamp}","${duration}","${billsec}","${hangup_cause}","${uuid}","${bleg_uuid}","${accountcode}","${read_codec}","${write_codec}"</template>
  </templates>
</configuration>