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    Hello!<br>
    <br>
        But even reading this RFC, I found that 100 Trying should be
    followed by one of 18x response to get media channels connected,
    isn't? <br>
    <br>
    <blockquote
cite="mid:BANLkTinNi0=5G00vmRaPZmj-WnVDOAxKYc+6CwsuZgYF_cdigQ@mail.gmail.com"
      type="cite">Btw, this is the latest SIP spec, better than the
      draft spec for 183 you posted before.<br>
      <br>
      <a moz-do-not-send="true"
        href="http://www.ietf.org/rfc/rfc3261.txt">http://www.ietf.org/rfc/rfc3261.txt</a><br>
      <br>
      -Steve<br>
      <br>
      <br>
      <br>
      <div class="gmail_quote">
        On 30 June 2011 09:55, Boris Kovalenko <span dir="ltr">&lt;<a
            moz-do-not-send="true" href="mailto:boris@tagnet.ru">boris@tagnet.ru</a>&gt;</span>
        wrote:<br>
        <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
          0.8ex; border-left: 1px solid rgb(204, 204, 204);
          padding-left: 1ex;">
          <div text="#000000" bgcolor="#ffffff"> Hello!<br>
            <br>
            Yes, this is all. INVITE, 100 and RTP. No other SIP
            messages. So my knowledge of SIP if right. And customer lies
            to me or forgot to configure something :)
            <div>
              <div class="h5"><br>
                <br>
                <blockquote type="cite">Is that all the signalling?<br>
                  <br>
                  100 Trying only acknowledges the INVITE.<br>
                  <br>
                  That *may* be followed by 183 or 180 which'll indicate
                  ringing. The Cisco would only be able to send early
                  media if that was a 183/SDP or 180/SDP.<br>
                  <br>
                  The voice will only start when it sends 200/SDP which
                  is when the call is answered.<br>
                  <br>
                  -Steve<br>
                  <br>
                  <br>
                  <div class="gmail_quote">On 30 June 2011 06:00, Boris
                    Kovalenko <span dir="ltr">&lt;<a
                        moz-do-not-send="true"
                        href="mailto:boris@tagnet.ru" target="_blank">boris@tagnet.ru</a>&gt;</span>
                    wrote:<br>
                    <blockquote class="gmail_quote" style="margin: 0pt
                      0pt 0pt 0.8ex; border-left: 1px solid rgb(204,
                      204, 204); padding-left: 1ex;">Hello!<br>
                      <br>
                          I have a customers with Cisco 2821 which want
                      to use IVR on it. He<br>
                      has configured Cisco and told me there is no voice
                      when number is<br>
                      called. The configuration is:<br>
                      <br>
                      Cisco 2821 &lt;-- FreeSwitch (full proxy mode)
                      --&gt; PSTN<br>
                      <br>
                      I looked at tcpdump and the call flow is:<br>
                      FS (INVITE) --&gt; Cisco 2821<br>
                      Cisco 2821 (100 Trying) --&gt; FS<br>
                      Cisco 2821 (RTP) --&gt; FS<br>
                      <br>
                      I think the call flow is wrong in that case and
                      SIP100 can not go<br>
                      throught Freeswitch<br>
                      (<a moz-do-not-send="true"
                        href="http://jdrosen.net/papers/draft-donovan-mmusic-183-00.txt"
                        target="_blank">http://jdrosen.net/papers/draft-donovan-mmusic-183-00.txt</a>)
                      and there<br>
                      should be SIP180 to get it work. But customers
                      said this is OK and he<br>
                      has no troubles with same configuration with other
                      provider. What may I<br>
                      do in this sutiation? Any specific Freeswitch
                      configuration?<br>
                      <br>
                      P.S. FreeSWITCH Version 1.0.head (git-1c95ad9
                      2011-01-20 22-43-50 -0300)<br>
                      <br>
                      --<br>
                      Regards,<br>
                      Boris<br>
                      <br>
                      <br>
                      <br>
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            <pre cols="72">-- 
С уважением,
  Борис Коваленко
  ЗАО "Тагнет"
  тел. +7 (3435) 230001
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    <pre class="moz-signature" cols="72">-- 
Regards,
Boris

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