<div dir="ltr">Although I do not believe it is technically a violation of the RFC, it is not recommended best practice, and would be a rare implementation. The most common way to support ringback (early media) is with a 183 w/SDP session progress.<div>
<br></div><div style>For a little more information:</div><div style><br></div><div><a href="http://wiki.freeswitch.org/wiki/180_vs._183_vs._Early_Media">http://wiki.freeswitch.org/wiki/180_vs._183_vs._Early_Media</a><br></div>
<div><br></div><div style>Of course some googling will give you tons more opinions about ring back and early media.</div><div style><br></div></div><div class="gmail_extra"><br clear="all"><div><br>-dg</div>
<br><br><div class="gmail_quote">On Tue, Feb 12, 2013 at 10:04 AM, Dani Popa <span dir="ltr"><<a href="mailto:dani.popa@gmail.com" target="_blank">dani.popa@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Hi,<div><br></div><div>I wondering if it posiible to add sdp on 180 ringing in order to play some ringing tone. The ideea si that i want to play from rtpproxy with <span style="font-family:Helvetica,Arial">rtpproxy_stream2uac/</span><span style="font-family:Helvetica,Arial">rtpproxy_stream2uas some music as ringback tone to calling party if it's online. </span><span class="HOEnZb"><font color="#888888"><div>
<br></div>-- <br>Dani Popa
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