Hi Brian, In my scenario, I connect FS to a  softswitch(bell alcatel),  the port change because the callee is using <em>CRBT(</em>Coloring Ring Back Tone<em>), I don&#39;t known much detail of the softswitch, I guessthere is a server process CRBT  and  another process </em><em>audio stream, so the port is changed, when I call a number without CRBT, the port is not changed.</em><em>   </em><br>
<br><div class="gmail_quote">2009/12/28 Brian West <span dir="ltr">&lt;<a href="mailto:brian@freeswitch.org">brian@freeswitch.org</a>&gt;</span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Is it even legal to change the port like that?  I recall a discussion and change to the code to allow this but as far as I can recall its not legal to do that... I may be wrong.<br>
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/b<br>
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On Dec 24, 2009, at 1:19 PM, Michael Collins wrote:<br>
<br>
&gt; Can you update to latest trunk and see if this still occurs? There have been many updates since pre9.<br>
&gt; Thanks,<br>
&gt; MC<br>
<br>
<br>
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