title: Detect the time when a phone starts ringing for outgoing calls
body: <p>How do detect the time when a phone starts ringing for outgoing calls.
  I am developing an Application in which I am trying to make a call programatically and when call is connected (ringing). I want get back some response(Like connected). I am trying below code, its able to make call but don't know how to get response.</p>
  
  <pre><code>Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:"mobile no.")); 
               startActivity(callIntent);
  </code></pre>
  
  <p>Thanks in advance for your time and consideration.</p>
  
  <p><strong>Edit :</strong> When outgoing call is connect (Ringing state) then i want get back a notification. like a toast or anything else which is relevant. is it possible? </p>