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    <div class="moz-cite-prefix"><tt>Hi, Maciej!<br>
        <br>
        The behavior you are describing is exactly how OpenSIPS should
        behave, so it's nothing wrong with your setup.<br>
        The second affirmation is also right, if you want to change the
        Contact header, you have to use topology-hiding, either the one
        provided by the dialog module, or the B2B module.<br>
        <br>
        Best regards,<br>
      </tt>
      <pre class="moz-signature" cols="72">Răzvan Crainea
OpenSIPS Solutions
<a class="moz-txt-link-abbreviated" href="http://www.opensips-solutions.com">www.opensips-solutions.com</a></pre>
      On 09/29/2014 01:33 AM, Maciej Bylica wrote:<br>
    </div>
    <blockquote
cite="mid:CACynCY6=M_hYz8mmtSwJpd3zEf72vH0Xmg7FdmyrmocvzYf4pQ@mail.gmail.com"
      type="cite">
      <div dir="ltr">Hi,
        <div><br>
        </div>
        <div>Guys could i ask you to share your experience here</div>
        <div><br>
        </div>
        <div>Thanks.</div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">2014-09-25 23:00 GMT+02:00 Maciej
          Bylica <span dir="ltr">&lt;<a moz-do-not-send="true"
              href="mailto:mbsip@gazeta.pl" target="_blank">mbsip@gazeta.pl</a>&gt;</span>:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div dir="ltr">
              <div><span
                  style="font-family:arial,sans-serif;font-size:13px;white-space:nowrap">Hello,</span><br>
              </div>
              <div><span
                  style="font-family:arial,sans-serif;font-size:13px;white-space:nowrap"><br>
                </span></div>
              <div><font face="arial, sans-serif"><span
                    style="white-space:nowrap">I just want to setup
                    Opensips as SIP Proxy node.</span></font></div>
              <div><font face="arial, sans-serif"><span
                    style="white-space:nowrap">Release </span></font><span
                  style="font-family:Menlo;font-size:11px">1.11.2-notls
                </span><span
                  style="font-family:arial,sans-serif;white-space:nowrap">and
                  DRouting module is already in place.</span></div>
              <div><span
                  style="font-family:arial,sans-serif;white-space:nowrap">I
                  just want to ask you what do you think about Contact
                  header modification in such case.</span></div>
              <div><span
                  style="font-family:arial,sans-serif;white-space:nowrap">Some
                  of my incoming INVITEs have only Contact header
                  (describing originator, like IPPABX for instance)
                  without Record-Route header.</span></div>
              <div><font face="arial, sans-serif"><span
                    style="white-space:nowrap">Opensips generates
                    additional Record-Route header but doesn't modify
                    Contact header at all and such request is sent to
                    terminator. As an after-effect all subsequent
                    requests properly match UAs (thanks to the
                    rule hat RR overrides Contact header).</span></font></div>
              <div><font face="arial, sans-serif"><span
                    style="white-space:nowrap">First of all is this how
                    Opensips behaves and there is nothing to worry
                    about?</span></font></div>
              <div><font face="arial, sans-serif"><span
                    style="white-space:nowrap"><br>
                  </span></font></div>
              <div><span
                  style="font-family:arial,sans-serif;white-space:nowrap">What
                  if i dont want to disclose Contact header information
                  passing transparently to the other side.</span></div>
              <div><font face="arial, sans-serif"><span
                    style="white-space:nowrap">I assume that i may use
                    B2B modules or topology-hiding within dialog module
                    or setup Freeswitch for this purpose, am i right?</span></font></div>
              <div><font face="arial, sans-serif"><span
                    style="white-space:nowrap">Maybe I should play
                    around with opensips script a little to modify that
                    header?</span></font></div>
              <div><font face="arial, sans-serif"><span
                    style="white-space:nowrap"><br>
                  </span></font></div>
              <div><font face="arial, sans-serif"><span
                    style="white-space:nowrap">Thanks in advance,</span></font></div>
              <div><font face="arial, sans-serif"><span
                    style="white-space:nowrap">Maciej</span></font></div>
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