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    <tt>Denis, if you are connecting to rtpproxy via an UDP connector,
      simply use ngrep (on the configured port). If using a unixsock
      connector, switch to a UDP one (rtpproxy_sock = udp:localhost:8899
      and do a similar change in the rtpproxy command line)</tt>.<br>
    <br>
    Regards,<br>
    <pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
    <br>
    On 07/23/2012 12:02 PM, dpa wrote:
    <blockquote cite="mid:00f801cd68b1$f5d61300$e1823900$@mail.ru"
      type="cite">
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        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31,
            73, 125);" lang="EN-US">Hello<o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31,
            73, 125);" lang="EN-US"><o:p> </o:p></span></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31,
            73, 125);" lang="EN-US">To speak the truth I do not know how
            to do it.  <o:p></o:p></span></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;; color: rgb(31,
            73, 125);" lang="EN-US"><o:p> </o:p></span></p>
        <div>
          <div style="border-right: medium none; border-width: 1pt
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            rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color;
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            <p class="MsoNormal"><b><span style="font-size: 10pt;
                  font-family:
                  &quot;Tahoma&quot;,&quot;sans-serif&quot;; color:
                  windowtext;" lang="EN-US">From:</span></b><span
                style="font-size: 10pt; font-family:
                &quot;Tahoma&quot;,&quot;sans-serif&quot;; color:
                windowtext;" lang="EN-US"> Bogdan-Andrei Iancu
                [<a class="moz-txt-link-freetext" href="mailto:bogdan@opensips.org">mailto:bogdan@opensips.org</a>] <br>
                <b>Sent:</b> Monday, July 23, 2012 12:54 PM<br>
                <b>To:</b> dpa<br>
                <b>Cc</b></span><b><span style="font-size: 10pt;
                  font-family:
                  &quot;Tahoma&quot;,&quot;sans-serif&quot;; color:
                  windowtext;">:</span></b><span style="font-size: 10pt;
                font-family: &quot;Tahoma&quot;,&quot;sans-serif&quot;;
                color: windowtext;"> 'OpenSIPS users mailling list'<br>
                <b>Subject:</b> Re: [OpenSIPS-Users] rtpproxy<o:p></o:p></span></p>
          </div>
        </div>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal"><tt><span style="font-size: 10pt;">Hi
              Denis,</span></tt><span style="font-size: 10pt;
            font-family: &quot;Courier New&quot;;"><br>
            <br>
            <tt>could you make a capture to see the comunication between
              opensips and rtproxy ?</tt><br>
            <br>
            <tt>Regards,</tt><br>
            <br>
          </span><o:p></o:p></p>
        <pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
        <pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
        <pre><a moz-do-not-send="true" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a><o:p></o:p></pre>
        <p class="MsoNormal"><br>
          On 07/20/2012 01:11 PM, dpa wrote: <o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">Hello
            Bogdan</span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US"> </span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">I
            am very sorry, last time I gave wrong information about the
            problem. Only with &#8220;r&#8221; flag there is no fax stream through
            rtpproxy (last email I said that everything is OK, but I
            made wrong test).</span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">Here
            <a moz-do-not-send="true" href="http://files.mail.ru/XF4J0L">http://files.mail.ru/XF4J0L</a>
          </span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">Is
            tcpdump of unsuccessful call.</span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US"> </span><o:p></o:p></p>
        <div>
          <div style="border-right: medium none; border-width: 1pt
            medium medium; border-style: solid none none; padding: 3pt
            0cm 0cm; border-color: -moz-use-text-color;">
            <p class="MsoNormal"><b><span style="font-size: 10pt;
                  font-family:
                  &quot;Tahoma&quot;,&quot;sans-serif&quot;; color:
                  windowtext;" lang="EN-US">From:</span></b><span
                style="font-size: 10pt; font-family:
                &quot;Tahoma&quot;,&quot;sans-serif&quot;; color:
                windowtext;" lang="EN-US"> Bogdan-Andrei Iancu [<a
                  moz-do-not-send="true"
                  href="mailto:bogdan@opensips.org">mailto:bogdan@opensips.org</a>]
                <br>
                <b>Sent:</b> Tuesday, July 17, 201</span><span
                style="font-size: 10pt; font-family:
                &quot;Tahoma&quot;,&quot;sans-serif&quot;; color:
                windowtext;">2 11:44 AM<br>
                <b>To:</b> dpa<br>
                <b>Cc:</b> 'OpenSIPS users mailling list'<br>
                <b>Subject:</b> Re: [OpenSIPS-Users] rtpproxy</span><o:p></o:p></p>
          </div>
        </div>
        <p class="MsoNormal"> <o:p></o:p></p>
        <p class="MsoNormal"><tt><span style="font-size: 10pt;">Hi ,</span></tt><span
            style="font-size: 10pt; font-family: &quot;Courier New ,
            serif ;&quot;,&quot;serif&quot;;"><br>
            <br>
          </span><tt><span style="font-size: 10pt;">Try only with "r"
              then.</span></tt><span style="font-size: 10pt;
            font-family: &quot;Courier New , serif
            ;&quot;,&quot;serif&quot;;"><br>
            <br>
          </span><tt><span style="font-size: 10pt;">Regards,</span></tt><span
            style="font-size: 10pt; font-family: &quot;Courier New ,
            serif ;&quot;,&quot;serif&quot;;"><br>
            <br>
            <br>
          </span><o:p></o:p></p>
        <pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
        <pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
        <pre><a moz-do-not-send="true" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a><o:p></o:p></pre>
        <p class="MsoNormal"><br>
          On 07/17/2012 06:26 AM, dpa wrote: <o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">Hello
            Bogdan</span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US"> </span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">I
            applied &#8220;r&#8221; and &#8220;a&#8221; flags and problem with fax disappeared,
            but I got another problem. After I applied &#8220;ra&#8221; clients
            behind nat cannot hear caller or callee (never mind who
            makes call).</span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">Rtpproxy
            is working, i.e. it changes SDP body of INVITE and replies,
            but there is no rtp stream.</span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US"> </span><o:p></o:p></p>
        <div>
          <div style="border-right: medium none; border-width: 1pt
            medium medium; border-style: solid none none; padding: 3pt
            0cm 0cm; border-color: -moz-use-text-color;">
            <p class="MsoNormal"><b><span style="font-size: 10pt;
                  font-family:
                  &quot;Tahoma&quot;,&quot;sans-serif&quot;; color:
                  windowtext;">From:</span></b><span style="font-size:
                10pt; font-family:
                &quot;Tahoma&quot;,&quot;sans-serif&quot;; color:
                windowtext;"> Bogdan-Andrei Iancu [<a
                  moz-do-not-send="true"
                  href="mailto:bogdan@opensips.org">mailto:bogdan@opensips.org</a>]
                <br>
                <b>Sent:</b> Thursday, July 12, 2012 7:01 PM<br>
                <b>To:</b> OpenSIPS users mailling list<br>
                <b>Cc:</b> dpa<br>
                <b>Subject:</b> Re: [OpenSIPS-Users] rtpproxy</span><o:p></o:p></p>
          </div>
        </div>
        <p class="MsoNormal"> <o:p></o:p></p>
        <p class="MsoNormal"><tt><span style="font-size: 10pt;">Hi,</span></tt><br>
          <br>
          <tt><span style="font-size: 10pt;">According to your trace the
              RTPproxy is properly inserted during the re-INVITE. Try to
              put the "r" and "a" flags when using RTPproxy from script.</span></tt><span
            style="font-size: 10pt; font-family: &quot;Courier New ,
            serif ;&quot;,&quot;serif&quot;;"><br>
            <br>
          </span><tt><span style="font-size: 10pt;">Regards,</span></tt><br>
          <br>
          <br>
          <br>
          <br>
          <o:p></o:p></p>
        <pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
        <pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
        <pre><a moz-do-not-send="true" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a><o:p></o:p></pre>
        <p class="MsoNormal"><br>
          On 07/11/2012 04:32 PM, dpa wrote: <o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">Hello
            Bogdan</span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US"> </span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">Thank
            you for answering. </span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">My
            case is 2).</span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">First
            I have audio stream which is replaced later by another fax
            stream.</span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">Here
            <a moz-do-not-send="true" href="http://files.mail.ru/8BYVCQ">http://files.mail.ru/8BYVCQ</a></span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">is
            a tcpdump of unsuccessful call where you can see that
            rtpproxy doesn`t proxy fax stream.</span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US">Rtpproxy
            (as an Opensips) is located on 213.170.100.150</span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;;" lang="EN-US"> </span><o:p></o:p></p>
        <div>
          <div style="border-right: medium none; border-width: 1pt
            medium medium; border-style: solid none none; padding: 3pt
            0cm 0cm; border-color: -moz-use-text-color;">
            <p class="MsoNormal"><b><span style="font-size: 10pt;
                  font-family:
                  &quot;Tahoma&quot;,&quot;sans-serif&quot;; color:
                  windowtext;">From:</span></b><span style="font-size:
                10pt; font-family:
                &quot;Tahoma&quot;,&quot;sans-serif&quot;; color:
                windowtext;"> <a moz-do-not-send="true"
                  href="mailto:users-bounces@lists.opensips.org">users-bounces@lists.opensips.org</a>
                [<a moz-do-not-send="true"
                  href="mailto:users-bounces@lists.opensips.org">mailto:users-bounces@lists.opensips.org</a>]
                <b>On Behalf Of </b>Bogdan-Andrei Iancu<br>
                <b>Sent:</b> Wednesday, July 11, 2012 4:43 PM<br>
                <b>To:</b> <a moz-do-not-send="true"
                  href="mailto:users@lists.opensips.org">users@lists.opensips.org</a><br>
                <b>Subject:</b> Re: [OpenSIPS-Users] rtpproxy</span><o:p></o:p></p>
          </div>
        </div>
        <p class="MsoNormal"> <o:p></o:p></p>
        <p class="MsoNormal"><tt><span style="font-size: 10pt;">Hi,</span></tt><span
            style="font-size: 10pt; font-family: &quot;Courier New ,
            serif ;&quot;,&quot;serif&quot;;"><br>
            <br>
          </span><tt><span style="font-size: 10pt;">You may have 2
              cases, not sure which is yours:</span></tt><span
            style="font-size: 10pt; font-family: &quot;Courier New ,
            serif ;&quot;,&quot;serif&quot;;"><br>
            <br>
          </span><tt><span style="font-size: 10pt;">1) the 2 media
              sessions are in parallel in the same calls (you can have 2
              -or more- RTP streams in the same SIP session). In this
              case, RTPproxy will take care automatically of each RTP
              stream)</span></tt><br>
          <br>
          <tt><span style="font-size: 10pt;">2) you have first one audio
              stream which is replaced by another FAX stream, via a
              re-INVITE - in this case, if you the normal offer / answer
              for RTPproxy also for the re-INVITE, it should be ok.</span></tt><span
            style="font-size: 10pt; font-family: &quot;Courier New
            ;&quot;,&quot;serif&quot;;"><br>
            <br>
          </span><tt><span style="font-size: 10pt;">Regards,</span></tt><span
            style="font-size: 10pt; font-family: &quot;Courier New ,
            serif ;&quot;,&quot;serif&quot;;"><br>
            <br>
            <br>
            <br>
            <br>
          </span><o:p></o:p></p>
        <pre>Bogdan-Andrei Iancu<o:p></o:p></pre>
        <pre>OpenSIPS Founder and Developer<o:p></o:p></pre>
        <pre><a moz-do-not-send="true" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a><o:p></o:p></pre>
        <p class="MsoNormal"><br>
          On 07/11/2012 11:42 AM, dpa wrote: <o:p></o:p></p>
        <p class="MsoNormal"><span style="font-family: &quot;Times New
            Roman , serif ;&quot;,&quot;serif&quot;;"><img
              id="Рисунок_x0020_1"
              src="cid:part1.09000104.00000306@opensips.org"
              alt="Описание: cid:part1.00030104.06050802@opensips.org"
              border="0" height="38" width="39"></span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;; color:
            windowtext;" lang="EN-US">Hello</span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;; color:
            windowtext;" lang="EN-US"> </span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;; color:
            windowtext;" lang="EN-US">There is one question about
            rtpproxy working.</span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;; color:
            windowtext;" lang="EN-US">If some UA using 2 different UDP
            ports for sending RTP and t38 fax packets during one call
            session, whether rtpproxy is working (proxy both UDP
            streams) in such case? </span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;; color:
            windowtext;" lang="EN-US"> </span><o:p></o:p></p>
        <p class="MsoNormal"><span style="font-size: 11pt; font-family:
            &quot;Calibri&quot;,&quot;sans-serif&quot;; color:
            windowtext;" lang="EN-US">Thank you for any help</span><o:p></o:p></p>
        <p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
        <pre> <o:p></o:p></pre>
        <pre> <o:p></o:p></pre>
        <pre>_______________________________________________<o:p></o:p></pre>
        <pre>Users mailing list<o:p></o:p></pre>
        <pre><a moz-do-not-send="true" href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a><o:p></o:p></pre>
        <pre><a moz-do-not-send="true" href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a><o:p></o:p></pre>
        <pre> <o:p></o:p></pre>
        <pre> <o:p></o:p></pre>
        <pre>_______________________________________________<o:p></o:p></pre>
        <pre>Users mailing list<o:p></o:p></pre>
        <pre><a moz-do-not-send="true" href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a><o:p></o:p></pre>
        <pre><a moz-do-not-send="true" href="http://lists.opensips.org/cgi-bin/mailman/listinfo/users">http://lists.opensips.org/cgi-bin/mailman/listinfo/users</a><o:p></o:p></pre>
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