title: jainsip processResponse not called
body: <p>I have successfylly used jainsip to register clients.  The method processRequest is working.  I am sending an Invite from the proxy to the phone and the phone is ringing.  The source port of the invite is 5060 and the ip the ip of the server.  I have used a sniffer to verify that 100Trying and 180Ringing are sent from the client to the server/proxy on port 5060.  There are two clients registered on the server and as mentioned, processRequest is working, but the 100Trying and 180Ringing responses arenot picked up by the SIpListener or the method processResponse just isn't called.  I am using these jars:</p>
  
  <pre><code>&lt;dependency&gt;
    &lt;groupId&gt;javax.sip&lt;/groupId&gt;
    &lt;artifactId&gt;jain-sip-api&lt;/artifactId&gt;
    &lt;version&gt;1.2.1.4&lt;/version&gt;
  &lt;/dependency&gt;
  &lt;dependency&gt;
    &lt;groupId&gt;javax.sip&lt;/groupId&gt;
    &lt;artifactId&gt;jain-sip-ri&lt;/artifactId&gt;
    &lt;version&gt;1.2.167&lt;/version&gt;
  &lt;/dependency&gt;
  </code></pre>
  
  <p>I am sending invite using this code:</p>
  
  <pre><code>ClientTransaction clientTransaction = sipProviderStatic.getNewClientTransaction(inviteRequest);
  clientTransaction.sendRequest();
  </code></pre>
  
  <p>The registrations are going throug fine so it is not a firewall problem, I even tried turning it off.</p>
  
  <p>Does anyone have an idea?</p>