void On_InstantMessagingCall_Received(object sender, CallReceivedEventArgs <InstantMessagingCall> e)
{
//Type checking was done by the platform; no risk of this being any
// type other than the type expected.
_instantMessagingCall = e.Call;
// Call: StateChanged: Only hooked up for logging, to show the call
// state transitions.
_instantMessagingCall.StateChanged += new
EventHandler <CallStateChangedEventArgs>(_instantMessagingCall_StateChanged);
// Remote Participant URI represents the far end (caller) in this
// conversation. Toast is the message set by the caller as the 'greet'
// message for this call. In Microsoft Lync, the toast will
// show up in the lower-right of the screen.
Console.WriteLine("Call Received! From: " + e.RemoteParticipant.Uri + " Toast is: " +
e.ToastMessage.Message);
// Now, decline the call. CallDeclineOptions can be used to supply a
// response code, here, 486 (Busy Here). Decline is asynchronous, as
// no reply will be received from the far end.
_instantMessagingCall.Decline(new CallDeclineOptions(486));
_autoResetEvent.Set();
}