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    <tt>Hi Arjun,<br>
      <br>
      If you have no audio at all for the call to Conf Server, you need
      to check the signaling, particularity speaking the SDP part to be
      sure you inserted RTPProxy correctly between UAC and Conf Server.<br>
      <br>
      So, make a SIP capture for the call to Conf and check if the IPs
      in SDP are correct.<br>
      <br>
      Regards,<br>
    </tt>
    <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 06/07/2012 05:46 PM, Arjun Shankar K S wrote:
    <blockquote
      cite="mid:33240807.46231339080401147.JavaMail.root@mail.vlinksys.com"
      type="cite">
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      <style type="text/css">body { font-family: 'Times New Roman'; font-size: 12pt; color: #000000}</style>Hi
      All,<br>
      <br>
      Greetings to everyone !!!<br>
      <br>
      I have set up opensips and RTP Proxy in two different hosts since
      I have opensips in a Natted environment where RTP Proxy refused to
      budge.<br>
      <br>
      Now I have installed RTP Proxy in a direct public IP. Normal calls
      between 2 Client is working great !!<br>
      <br>
      During conference call, the calls get connected but there is no
      voice communication between any of them and soon the client who
      was connected last, gets disconnected.<br>
      <br>
      I could not find much support regarding this issue. Any support is
      sincerely appreciated.<br>
      <br>
      In my opensips.cfg, I have made the following config changes for
      RTP in different host,<br>
      <br>
      <span style="font-family: Courier,Courier New,mono; font-style:
        italic;">------Nat Params-------------</span><br
        style="font-family: Courier,Courier New,mono; font-style:
        italic;">
      <span style="font-family: Courier,Courier New,mono; font-style:
        italic;">modparam("usrloc","nat_bflag", 6)</span><br
        style="font-family: Courier,Courier New,mono; font-style:
        italic;">
      <span style="font-family: Courier,Courier New,mono; font-style:
        italic;">modparam("nathelper","rtpproxy_sock",
        "udp:rtp_proxy_publicIP:7890")</span><br style="font-family:
        Courier,Courier New,mono; font-style: italic;">
      <span style="font-family: Courier,Courier New,mono; font-style:
        italic;">modparam("nathelper","natping_interval", 30)</span><br
        style="font-family: Courier,Courier New,mono; font-style:
        italic;">
      <span style="font-family: Courier,Courier New,mono; font-style:
        italic;">modparam("nathelper","ping_nated_only", 0)</span><br
        style="font-family: Courier,Courier New,mono; font-style:
        italic;">
      <span style="font-family: Courier,Courier New,mono; font-style:
        italic;">modparam("nathelper","sipping_bflag", 7)</span><br
        style="font-family: Courier,Courier New,mono; font-style:
        italic;">
      <span style="font-family: Courier,Courier New,mono; font-style:
        italic;">modparam("nathelper","sipping_from",
        <a class="moz-txt-link-rfc2396E" href="sip:pinger@PROXY_IP">"sip:pinger@PROXY_IP"</a>)</span><br style="font-family:
        Courier,Courier New,mono; font-style: italic;">
      <span style="font-family: Courier,Courier New,mono; font-style:
        italic;">modparam("registrar","received_avp", "$avp(i:42)")</span><br
        style="font-family: Courier,Courier New,mono; font-style:
        italic;">
      <span style="font-family: Courier,Courier New,mono; font-style:
        italic;">modparam("nathelper","received_avp", "$avp(i:42)")<br>
        <br>
      </span><span style="font-family: Times New Roman,Times,serif;">I
        am </span><span style="font-family: Courier,Courier New,mono;"><span
          style="font-family: Times New Roman,Times,serif;">running my
          RTP Proxy using the following command,</span></span><span
        style="font-family: Courier,Courier New,mono; font-style:
        italic;"><br>
        <br>
        ./rtpproxy -l </span><span style="font-family: Courier,Courier
        New,mono; font-style: italic;">rtp_proxy_publicIP</span><span
        style="font-family: Courier,Courier New,mono; font-style:
        italic;"> -s udp:*:7890 -F<br>
        <br>
      </span><br>
      Thanks,<br>
      Arjun<br>
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    </blockquote>
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