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    <p>Thank you Michael for your advice. <br>
    </p>
    <p>I am not  an expert in session timers therefore I would be happy
      if anybody could explain whether current behavior is correct or
      not.</p>
    <p>Customer makes a call : <br>
    </p>
    <p>Customer PBX -&gt; INVITE requires Session-Expires:
      90;refresher=uac <br>
    </p>
    <p>our FS1.6 returns in 200 OK : Session-Expires: 120;refresher=uas<br>
    </p>
    <p>After 90 seconds Customer's PBX sends BYE - I think because of
      Session-Expires: 90</p>
    <p>For testing, I changes my sip profile to &lt;param
      name="enable-timer" value="false"/&gt;</p>
    <p>This time, call was not ended by customer's PBX.  <br>
    </p>
    <p>Do you think it can be NAT problem ? Honestly I am confused a bit
      with this issue. <br>
    </p>
    <p>BR,</p>
    <p>Jan<br>
    </p>
    <div class="moz-cite-prefix">On 08/02/2017 16:18, Michael Jerris
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAEwTsAj=mj2oKV3wuHxZXU1ODqYa2BHHur7qPiaZ5256f-xL5Q@mail.gmail.com"
      type="cite">
      <div>this typically happens in misconfiguted nat scrnarios, which
        would otherwise break habgup for the same call.  Troubleshoot
        why the call is breaking and fix the issue is the best approach.</div>
      <div><br>
        <div class="gmail_quote">
          <div>On Wed, Feb 8, 2017 at 8:48 AM Ján Füri &lt;<a
              moz-do-not-send="true" href="mailto:furi@vmtele.com">furi@vmtele.com</a>&gt;
            wrote:<br>
          </div>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div bgcolor="#FFFFFF" text="#000000" class="gmail_msg">
              <p class="gmail_msg">Hi all,</p>
              <p class="gmail_msg">I have a question about disabling
                enable-timer.</p>
              <p class="gmail_msg">In my sip_profile i have &lt;param
                name="enable-timer" value="true"/&gt;. But one of our
                customer has a problem with it and his calls are ended
                after 90 sec. <br class="gmail_msg">
              </p>
              <p class="gmail_msg">I think 90 sec. is time that
                customer's pbx is set for rtp timer. <br
                  class="gmail_msg">
              </p>
              <p class="gmail_msg">I don't want to change my sip profile
                enable-timer to false because it would influence all our
                customers. Is that possible to disable rtp timer in a
                dialplan ? <br class="gmail_msg">
              </p>
              <p class="gmail_msg">BR,<br class="gmail_msg">
              </p>
              <div class="m_-3172178460692726109moz-signature gmail_msg">J<font
style="font-family:'Tahoma',sans-serif;font-size:9pt;color:#333"
                  class="gmail_msg"><font
                    style="font-weight:bolder;color:#333333;font-size:11pt"
                    class="gmail_msg">an Furi</font><br
                    class="gmail_msg">
                    <br class="gmail_msg">
                </font></div>
            </div>
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