<div dir="ltr">The 4733 is just an update to 2833 and its basically the same in terms of our usage so you can consider the names interchangeable.<div>There is no way to negotiate SIP INFO DTMF so you can enable it as needed.</div><div>If you want to send INFO DTMF you can set the variable dtmf_type=info in the outbound dial string.</div><div><br></div><div>INFO is the most reliable when used with TCP, 2833 is more reliable over UDP.</div><div>INFO traverses the signaling patch where 2833 traverses the media so there are considerations to make.  There is no best.</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Jan 5, 2017 at 10:49 AM, Mimiko <span dir="ltr">&lt;<a href="mailto:vbvbrj@gmail.com" target="_blank">vbvbrj@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">Hello.<br>
<br>
What is better to use as standard for DTMF: SIP Info or rfc2833 ? In sip<br>
profile I can set &lt;param name=&quot;liberal-dtmf&quot; value=&quot;true&quot;/&gt; so, FS will<br>
accept both types of DTMF standard, while FS always send rfc2833. Why FS<br>
always send in rfc2833 and not the agreed with client like is the case<br>
of audio codecs? Is rfc2833 in FS a rfc4733 in the code, and is named<br>
rfc2833 in wiki?<br>
<br>
--<br>
Mimiko desu.<br>
<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr">Anthony Minessale II       ♬ @anthmfs  ♬ @FreeSWITCH  ♬<div><br><div>☞ <a href="http://freeswitch.org/" target="_blank">http://freeswitch.org/</a>  ☞ <a href="http://cluecon.com/" target="_blank">http://cluecon.com/</a>  ☞ <a href="http://twitter.com/FreeSWITCH" target="_blank">http://twitter.com/FreeSWITCH</a></div><div><div>☞ <a href="http://irc.freenode.net" target="_blank">irc.freenode.net</a> #freeswitch ☞ <u><a href="http://freeswitch.org/g+" target="_blank">http://freeswitch.org/g+</a></u><br><br></div><div>ClueCon Weekly Development Call <br></div><div>☎ <a href="mailto:sip%3A888@conference.freeswitch.org" target="_blank">sip:888@conference.freeswitch.org</a>  ☎ +19193869900 </div><div><br></div></div></div><div><a href="https://www.youtube.com/watch?v=9XXgW34t40s" style="color:rgb(17,85,204);font-size:12.8000001907349px" target="_blank">https://www.youtube.com/watch?v=9XXgW34t40s</a></div><div><a href="https://www.youtube.com/watch?v=NLaDpGQuZDA" target="_blank">https://www.youtube.com/watch?v=NLaDpGQuZDA</a><br></div></div></div></div></div></div></div>
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