Limits::canRentNumber

static function canRentNumber()
{
	$account = new CVoxImplantAccount();
	if ($account->GetAccountLang() === 'ua')
	{
		return false;
	}

	$maximumNumbers = self::getMaximumNumbers();
	if ($maximumNumbers == 0)
		return true;

	$currentCount = CVoxImplantPhone::GetRentedNumbersCount();
	return $currentCount < $maximumNumbers;
}