<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:10pt">For outbound calls, if you really need to be compatible with a large, unknown number of users with unknown client preferences, you can let them define codec preference for every user individually. It's just a variable that you pass to the gateway.<br><br>For inbound calls, FreeSWITCH can also accept codecs which are not listed in preferences if there's no other choice. You can also define several profiles with different codec preferences and make them listen on different UDP ports.<br><br><br><br><br><br><br><div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 10pt;"><div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;"><div dir="ltr"><hr size="1">  <font face="Arial"
 size="2"> <b><span style="font-weight:bold;">From:</span></b> Pete Ashdown &lt;pashdown@xmission.com&gt;<br> <b><span style="font-weight: bold;">To:</span></b> FreeSWITCH Users Help &lt;freeswitch-users@lists.freeswitch.org&gt; <br> <b><span style="font-weight: bold;">Sent:</span></b> Saturday, March 22, 2014 2:40 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> [Freeswitch-users] Optimum codec list?<br> </font> </div> <div class="y_msg_container"><br>So considering I can't put every possible codec under the sun into<br>codec_prefs, due to the aforementioned MTU limit on the SIP packet, what<br>is considered an optimum set of codecs that fits with a wide<br>compatibility base?<br><br>_________________________________________________________________________<br>Professional FreeSWITCH Consulting Services:<br><a ymailto="mailto:consulting@freeswitch.org" href="mailto:consulting@freeswitch.org">consulting@freeswitch.org</a><br><a
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