How to display properties of a property in Bitrix?

Question

1C-Bitrix

Hello.
I need to Display properties of type binding to elements - set, these properties have their own properties.

<?
foreach($arResult["PROPERTIES"]["CALL"]["VALUE"] as $call)
{
  $call = CIBlockElement::GetList(Array("SORT"=>"ASC"), Array("IBLOCK_ID"=>"4", "ID"=>$call),false, Array("ID", "IBLOCK_ID")); ;	
        while($ob = $сall->GetNextElement()){ 
        $arFields = $ob->GetFields();  //тут поля Имя, превьюхи и тд
        $arProps = $ob->GetProperties(); // тут свойства. Продолжительность, время и т.д
          }
        $arResult["CALLP"][] = $arProps;
        $arResult["CALLF"][] = $arFields;
        }
?>
<h2>Звонки</h2>
<?foreach($arResult["CALLP"] as $arItem):?> //так свойства
<?foreach($arResult["CALLF"] as $arItems):?> //без него не выыодится имена
  <?=$arItems["NAME"];?> //вывод имени звонка
  <?=$arItem["LONG"]["VALUE"];?> //вывод продолжительности звонка
<?endforeach?>
<?endforeach?>

With my code I end up with duplication. Displays the same thing over and over again.
Tell me, please, how to push in one cycle and so that the properties of the properties are displayed,
as well as their names, without duplication.
Elements must follow each other in layout.
i.e .:
Ring 1
Duration: 50 minutes
Call 2
Duration: 30 minutes
etc. And I have this
Ring 1
Duration: 50 minutes
Call 2
Duration: 50 minutes
Call 1
Duration: 30 minutes
Call 2
Duration: 30 minutes