Is this message flow valid?<div><br></div><div>FS   ----------------  MyProvider</div><div><br></div><div>---&gt; INVITE (w/SDP G729, G711a, G711u)</div><div><br></div><div>&lt;--- 100 Trying</div><div><br></div><div>&lt;--- 183 Session Progress (w/SDP G729, G711a, G711u)</div>
<div><br></div><div>&lt;--- 200 OK (w/SDP G729, G711a, G711u)
</div><div><br></div><div><br></div><div>What is strange to me is that my provider send back a 183 Session Progress with all codec list of Freeswitch INVITE (I expect only the choosen codec).</div><div><br></div><div>It&#39;s this message flow correct?</div>
<div><br></div><div>Stephen</div>