CVoxImplantPhone::getRentedNumbersHash

static function getRentedNumbersHash()
{
	$result = VIModelNumberTable::getList(array(
		'select' => ['NUMBER'],
		'cache' => ['ttl' => 31536000]
	))->fetchAll();

	$numbers = array_map(function($n){return $n['NUMBER'];}, $result);
	sort($numbers, SORT_STRING);

	return md5(join("", $numbers));
}