title: Need sample fire and forget async call to WCF service
body: <p>On a scheduled interval I need to call a WCF service call another WCF Service asyncronously.  Scheduling a call to a WCF service I have worked out.</p>
  
  <p>What I think I need and I have read about here on stackoverflow that it is necessary to.., (in essence) prepare or change the code of your WCF services as to be able to handle an async call to them.  If so what would a simple example of that look like?(Maybe a before and after example)  Also is it still necessary in .Net 3.5?</p>
  
  <p>Second I am using a proxy from the WCF Service doing the call to the next WCF Service and need a sample of an async call to a WCF service if it looks any different than what is typical with BeginEnvoke and EndEnvoke with typical async examples.</p>
  
  <p>I would believe it if I am completely off on my question and would appreciate any correction to establish a better question as well.</p>