title: Twilio sip call is not working from tryit.jssip.net
body: <p>I am using Twilio to make sip outgoing calls. I have created a sip domain, registered credential lists. Then i registered in <code>Zoiper</code> using the sip credentials and made an outbound call. It was working successfully.
  Similarly i tried using <code>tryit.jssip.net</code>. But there it was asking for a WebSocket uri. What is that <code>WebSocket uri</code> for twilio ?
  Is there something to do more in twilio to register sip endpoint in tryit.jssip.net</p>
  
  <p>Sharing the screenshots here.</p>
  
  <ol>
  <li><p>This is the jssip configuration. I entered sip uri and password. Websocket url is by default <code>wss://tryit.jssip.net:10443</code>. I didn't change it.
  <a href="https://i.stack.imgur.com/5lsr5.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/5lsr5.png" alt="Jssip configuration"></a></p></li>
  <li><p>Then it got registered and i tried calling from that number. At that time the call got failed with a message <code>Incompatible UDP</code>
  <a href="https://i.stack.imgur.com/GKzMJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/GKzMJ.png" alt="Incompatible UDP when tried calling"></a></p></li>
  </ol>