timout error :while connecting an external service from a windows service.

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Windows

WCF

service

i have modified the appconfig for the client(external service) call and the hosted windows service. still it gives time out error.
appconfig tags below..

<bindings>
     <custombinding>
       <binding name="VisualizationSoapBinding">
         sendTimeout= "00:05:00"
         receiveTimeout="00:05:00"
         closeTimeout="00:02:00"
         openTimeout="00:02:00/&gt;
         <httpstransport />
       </binding>
     </custombinding>
     <wshttpbinding>
       <binding name="VisWsHttpBinding">
         sendTimeout= "00:06:00"
         receiveTimeout="00:06:00"
         closeTimeout="00:02:00"
         openTimeout="00:02:00" /&gt;

       </binding>
     </wshttpbinding>
   </bindings>
   <client>
     <endpoint address="https://vissvc-int.es.corpintra.net/VisSvcNativePL/DAIESIVisService" binding="customBinding" bindingconfiguration="VisualizationSoapBinding" contract="VisualizationServiceReference.ESIVisServicePortType" name="ESIVisServicePort" behaviorconfiguration="SiteminderBehaviour" />
   </client>
   <services>
      <service name="WcfServiceLibraryTest.WinVisSvc">
       <host>
                 <add baseaddress="http://localhost:9001/WcfServiceLibraryTest/WinVisSvc/" />
               </host>
       <endpoint address="http://localhost:9001/WcfServiceLibraryTest/WinVisSvc/" binding="wsHttpBinding" bindingconfiguration="VisWsHttpBinding" contract="WcfServiceLibraryTest.IVisSvc">
                <identity>
           <dns value="localhost" />
         </identity>
       </endpoint>
     </service>
   </services>

the error details:
it gives timeout error

I am getting results when call the service directly from c#.
Can somebody help me in this