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"><<a href="mailto:boris@tagnet.ru">boris@tagnet.ru</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;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 <-- FreeSwitch (full proxy mode) --> PSTN<br>
<br>
I looked at tcpdump and the call flow is:<br>
FS (INVITE) --> Cisco 2821<br>
Cisco 2821 (100 Trying) --> FS<br>
Cisco 2821 (RTP) --> FS<br>
<br>
I think the call flow is wrong in that case and SIP100 can not go<br>
throught Freeswitch<br>
(<a 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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