title: Perform SIP Call from Windows Phone 8.1
body: <p>I'm trying to learn to develop SIP client for Windows Phone 8.1 (following <a href="http://msdn.microsoft.com/en-us/library/windowsphone/develop/jj206983%28v=vs.105%29.aspx" rel="nofollow">this</a> example).</p>
  
  <p>The example mentions to call:</p>
  
  <pre><code>Windows.Phone.Networking.Voip.VoipCallCoordinator.RequestNewOutgoingCall()
  </code></pre>
  
  <p>to perform outgoing call. However, from the <a href="http://msdn.microsoft.com/en-us/library/windowsphone/develop/jj662966.aspx" rel="nofollow">documentation</a>, RequestNewOutgoingCall is to  "Notifies the system of a new outgoing call." Not to connect to the actual SIP server.</p>
  
  <p>Anyone knows how to connect to the desired SIP server?
  Thanks.</p>