There are some use-cases.<div><br></div><div>The main one would be that you might get FS to generate a ringback tone if you&#39;re using ignore_early_media=true since otherwise the caller would never hear any ringing.</div>

<div><br></div><div>-Steve<br><div><br></div><div><br><br><div class="gmail_quote">On 23 February 2013 17:06, Hynek Cihlar <span dir="ltr">&lt;<a href="mailto:hynek.cihlar@gmail.com" target="_blank">hynek.cihlar@gmail.com</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>Is there even a valid use case for Freeswitch to set a channel to RINGING before the actual ring is signaled by the far endpoint? What other evidence would be helpful to diagnose the issue?</div>

<span class="HOEnZb"><font color="#888888"><br clear="all"><div>
Hynek<br></div></font></span><div class="HOEnZb"><div class="h5">
<br><br><div class="gmail_quote">On Tue, Feb 12, 2013 at 12:03 PM, Hynek Cihlar <span dir="ltr">&lt;<a href="mailto:hynek.cihlar@gmail.com" target="_blank">hynek.cihlar@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">






<div>When originating a call the respective call channel&#39;s call state is set to RINGING right after progress 100 is received. </div><div><br></div><div>Here&#39;s the captured flow:</div><div><br></div><div><div><font face="courier new, monospace">|Time     | &lt;src ip&gt;                              |</font></div>







<div><font face="courier new, monospace">|         |                   | &lt;dst ip&gt;          |                   </font></div><div><font face="courier new, monospace">|2.848    |         INVITE SDP (g711A g711U GSM telephone-eventRTP...e-101 CN)          |SIP From: &quot;&quot; &lt;sip:endpoint removed To:&lt;sip:endpoint removed</font></div>







<div><font face="courier new, monospace">|         |(5080)   ------------------&gt;  (5060)   |</font></div><div><font face="courier new, monospace">|2.848    |         407 Proxy Authentication Required          |SIP Status</font></div>







<div><font face="courier new, monospace">|         |(5080)   &lt;------------------  (5060)   |</font></div><div><font face="courier new, monospace">|2.849    |         ACK       |                   |SIP Request</font></div>







<div><font face="courier new, monospace">|         |(5080)   ------------------&gt;  (5060)   |</font></div><div><font face="courier new, monospace">|2.849    |         INVITE SDP (g711A g711U GSM telephone-eventRTP...e-101 CN)          |SIP From: &quot;&quot; &lt;sip:endpoint removed To:&lt;sip:</font><span style="font-family:&#39;courier new&#39;,monospace">endpoint removed</span></div>







<div><font face="courier new, monospace">|         |(5080)   ------------------&gt;  (5060)   |</font></div><div><font face="courier new, monospace">|2.850    |         100 Trying|                   |SIP Status</font></div>







<div><font face="courier new, monospace">|         |(5080)   &lt;------------------  (5060)   |</font></div><div><font face="courier new, monospace">|13.444   |         180 Ringing                   |SIP Status</font></div>







<div><font face="courier new, monospace">|         |(5080)   &lt;------------------  (5060)   |</font></div><div><font face="courier new, monospace">|13.445   |         183 Session Progress SDP (g711A g711U GSM tele...ne-eventRTPType-101)          |SIP Status</font></div>







<div><font face="courier new, monospace">|         |(5080)   &lt;------------------  (5060)   |</font></div><div><font face="courier new, monospace">|13.445   |         RTP (g711A)                   |RTP Num packets:230  Duration:4.574s SSRC:0x1E777E26</font></div>







<div><font face="courier new, monospace">|         |(26056)  &lt;------------------  (19312)  |</font></div><div><font face="courier new, monospace">|13.601   |         RTP (g711A)                   |RTP Num packets:220  Duration:4.419s SSRC:0xA530C519</font></div>







<div><font face="courier new, monospace">|         |(26056)  ------------------&gt;  (19312)  |</font></div></div><div><br></div><div>After the 100 Trying is received the switch executes switch_channel_perform_set_running_state (switch_channel.c) and the channel call state is set to RINGING and ESL event CHANNEL_CALLSTATE:RINGING is generated.</div>







<div><br></div><div>I would expect the channel call state to be set to RINGING only after 180 Ringing is received from the far endpoint.</div><div><br></div><div>Could anybody give me a hint what could be wrong or what steps to take to figure out? I am already out of ideas.</div>







<div><br></div><div>Thanks!</div><span><font color="#888888"><div>Hynek<br></div>
</font></span></blockquote></div><br>
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