title: auto answer when catching the phone with asterisk
body: <p>I am working with an asterisk software pbx.</p>
  
  <p>I have an IP phone which is configured with asterisk.</p>
  
  <p>What i want to do is make call to a special number when the user hangs the phone. I do not want him to have to compose a number.</p>
  
  <p>Do you know if it possible ?</p>
  
  <p>Thanks</p>