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    Could you explaint your scenario better?<br>
    The server is in a private network?<br>
    The cliets are in different private networks?<br>
    <br>
    s<br>
    <br>
    <div class="moz-cite-prefix">Il 04/01/2013 05:23, Mark Currie ha
      scritto:<br>
    </div>
    <blockquote cite="mid:00d301cdea33$3bb40e60$b31c2b20$@ziliant.com"
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        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Thanks
            for the advice Flavio.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Currently
            I am actually pretty close with my NAT&#8217;ed OpenSIPS and
            NAT&#8217;ed clients. I am assuming this is because I have a
            simple NAT scenario with full-cone NATs.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">I
            get as far as making a call, but when I pick-up the call
            only one side gets RTP through. I traced the problem to the
            fact that a local address is being put in the &#8220;Record Route&#8221;
            section of an ACK response.<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">I
            would like to try to get this more controllable scenario
            working first before I launch into new complexity with RTP
            proxies etc. I think that I just need to know how to get the
            fix_nat_sip() and fix_nat_contact() to work. Any pointers
            with that?<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Regards<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">Mark<o:p></o:p></span></p>
        <p class="MsoNormal"><span
style="font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
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              <p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"
                    lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"
                  lang="EN-US"> <a class="moz-txt-link-abbreviated" href="mailto:users-bounces@lists.opensips.org">users-bounces@lists.opensips.org</a>
                  [<a class="moz-txt-link-freetext" href="mailto:users-bounces@lists.opensips.org">mailto:users-bounces@lists.opensips.org</a>] <b>On
                    Behalf Of </b>Flavio Goncalves<br>
                  <b>Sent:</b> 03 January 2013 12:27<br>
                  <b>To:</b> OpenSIPS users mailling list<br>
                  <b>Subject:</b> Re: [OpenSIPS-Users] NAT issues on
                  client and server<o:p></o:p></span></p>
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          <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
          <p class="MsoNormal">Hi Mark,&nbsp;<o:p></o:p></p>
          <div>
            <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
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          <div>
            <p class="MsoNormal">There is no simple way to traverse NAT.
              Unless all your routers use a non symmetric NAT, you will
              have to use rtpproxy or mediaproxy (you can check this
              with a stun client). OpenSIPS behind NAT make things even
              more complicated. So I suggest that you follow an example
              with rtpproxy or media proxy and also use the OpenSIPS in
              a valid IP address. The setup you are trying to do with
              OpenSIPS behind NAT is possible, but it is even more
              complex.&nbsp;<o:p></o:p></p>
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            <p class="MsoNormal"><br clear="all">
              <o:p></o:p></p>
            <div>
              <div>
                <p class="MsoNormal">Flavio E. Goncalves<o:p></o:p></p>
              </div>
              <div>
                <p class="MsoNormal">&nbsp;<o:p></o:p></p>
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            <p class="MsoNormal" style="margin-bottom:12.0pt"><o:p>&nbsp;</o:p></p>
            <div>
              <p class="MsoNormal">2013/1/3 Mark Currie &lt;<a
                  moz-do-not-send="true" href="mailto:mark@ziliant.com"
                  target="_blank">mark@ziliant.com</a>&gt;<o:p></o:p></p>
              <p class="MsoNormal">Hi,<br>
                <br>
                I have a very simple setup for a closed network of users
                (all NAT'ed) with<br>
                one OpenSIPS server (also NAT'ed).<br>
                <br>
                I have managed to solve my first problem with
                registration by following<br>
                previous posts and using fix_nat_register(), but I am
                still having problems<br>
                with NAT issues during a call. I know that I probably
                need to use<br>
                fix_nat_contact() and fix_nat_sip() but I can't figure
                out how to use these<br>
                properly through the documentation.<br>
                <br>
                I have tried to search for examples of opensips.cfg that
                suit my scenario<br>
                but all the ones I found are complicated with proxies
                etc. Can someone point<br>
                me to simple example of opensips.cfg that takes care of
                NAT?<br>
                <br>
                Regards<br>
                Mark Currie<br>
                <br>
                <br>
                _______________________________________________<br>
                Users mailing list<br>
                <a moz-do-not-send="true"
                  href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a><br>
                <a moz-do-not-send="true"
                  href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users"
                  target="_blank">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a><o:p></o:p></p>
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            <p class="MsoNormal"><o:p>&nbsp;</o:p></p>
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      <pre wrap="">_______________________________________________
Users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a>
<a class="moz-txt-link-freetext" href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a>
</pre>
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