title: Retransmission timeout reached on transmission
body: <p>I am configure the user account using sip and extensions configuration files.
  and configure this account to mobile and i got online status.</p>
  
  <p>But when i am trying to forward the call that time i got "Retransmission timeout reached on transmission"
  if any one know about that. please share with me...
  I have put the details on this link:</p>
  
  <p><a href="http://forums.asterisk.org/viewtopic.php?f=1&amp;t=88003&amp;p=191890&amp;hilit=retransmission#p191890" rel="nofollow noreferrer">http://forums.asterisk.org/viewtopic.php?f=1&amp;t=88003&amp;p=191890&amp;hilit=retransmission#p191890</a></p>
  
  <p><strong>Sip.conf:</strong></p>
  
  <pre><code>[10000]
  type = friend
  sendrpid=yes
  context=test
  username= 10000
  host=dynamic
  mailbox = 10000
  dtmfmode = rfc2833
  secret=user
  nat=no
  directmedia=yes
  qualify=yes
  disallow =all
  allow=ulaw
  allow=alaw
  callerid=10000 &lt;10000&gt;
  canreinvite=no
  </code></pre>
  
  <p><strong>extensions.conf:</strong></p>
  
  <pre><code>[test]
  include =&gt; demo
  include =&gt; test1
  exten =&gt; _1000X,1,Answer
  exten =&gt; _1000X,2,Dial(SIP/${EXTEN})
  exten =&gt; _1000x,3,Noop()
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/TP412.png" alt="enter image description here">
  Thanks in advance</p>