if fax_node = xml_node.at_xpath('//ns:fax', ns: Rayo::RAYO_NAMESPACES[:fax_complete])
          self.fax = Adhearsion::Rayo::RayoNode.from_xml(fax_node).tap do |fax|
            fax.target_call_id = target_call_id
            fax.component_id = component_id