Ошибка при обращении к web сервису 1с извне

<?php
$wsdl_url ='http://*.*.*.*/1cws/ws/*.1cws?wsdl';
$login = '***';
$pass = '***';
try **  
     $client = new SoapClient($wsdl_url, array('login'=>$login, 'password'=>$pass));
 ** catch (SoapFault $e) **  
    echo $e; 
 **

foreach($client->__getFunctions() as $V)**
	var_dump($V);echo '<br>';
**

$parameters = array('StartDate1'=>'2018-04-01', 'FinishDate'=>'2018-04-20');
$res = $client->GetLessons($parameters);
var_dump($res);