FieldMultiTable::fetchPhoneIdsByOwner

static function fetchPhoneIdsByOwner(ItemIdentifier $owner): array
{
	return static::getList([
		'select' => ['ID'],
		'filter' => [
			'=ENTITY_ID' => \CCrmOwnerType::ResolveName($owner->getEntityTypeId()),
			'=ELEMENT_ID' => $owner->getEntityId(),
			'=TYPE_ID' => 'PHONE',
		],
	])->fetchCollection()->getList('ID');
}