Calling an external webservice, sometimes we get "operation has timed out."
the full stack trace is below (I've just replaced personal info).

The webservice provider suggested it timed out trying to connect to their
service which may be related to network issues. I don't see that information
in the stack trace.  How do you even begin to debug this to determine if it's
on our end or theirs?

Thanks!

  at
System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest
request)
  at
System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest
request)
  at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String
methodName, Object[] parameters)
  at <WebServiceProviderProxyName>.<WebMethod>(param1, param2, etc.)
  at <MyApp><MyClass><MyMethodThatCallsWebMethod>
  at <MyPage>.Page_Load(Object sender, EventArgs e)
  at System.Web.UI.Control.OnLoad(EventArgs e)
  at <MyPage>.OnLoad(EventArgs e)
  at System.Web.UI.Control.LoadRecursive()
  at System.Web.UI.Page.ProcessRequestMain()