关于php调用webservice问题

Question

       $url_webservice='http://59.52.225.147:8881/WebAPI';  // 接口
       $param1 = '00002629';
       $param2 = '13870651176';
       $param3 = '吴国强';
       $client = new \SoapClient($url_webservice.'/OTAInterface.asmx?wsdl',array('encoding'=>'UTF-8'));
=
       //  参数数组（用于具体方法）
       $aryPara = array('CardNo'=> $param1,'TelePhone'=> $param2,'CardName' => $param3);
       $getHtmlmap = $client->WXQueryCard($aryPara);

一直报 

Could not connect to host

这个错误