title: How can I call an internal sip phone using a server with freeswitch
body: <p>I want to make an internal call from a server with freeswitch to a sip phone that's registered and connected and has the extension of 1000</p>
  
  <p>I'm fairly sure I use originate sofia and I've been trying several combinations with no result.
  The sort of thing I've been trying is </p>
  
  <pre><code> originate sofia/internal/1000@[my IP address] &amp;park{}
  </code></pre>
  
  <p>And I get the result</p>
  
  <blockquote>
    <p>-ERR NO_USER_RESPONSE</p>
  </blockquote>