<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Your saying you see media flowing in both directions even when the record doesn't work, and when you play the stream in wireshark, there is media in that stream, and its not silent?<div><br><div><div>On Oct 1, 2013, at 10:23 AM, Callum Guy <<a href="mailto:callum.guy@x-on.co.uk">callum.guy@x-on.co.uk</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(51,51,153)">I'm calling in from a Linksys SPA941 and I will be the only user on the FreeSWITCH server. I have been using tcpdump to capture my RTP traffic using the following command:</div>
<div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(51,51,153)"><br></div><div class="gmail_default"><font color="#333399" face="verdana, sans-serif">tcpdump -i any -n dst portrange 10000-50000</font><br>
</div><div class="gmail_default"><font color="#333399" face="verdana, sans-serif"><br></font></div><div class="gmail_default"><font color="#333399" face="verdana, sans-serif">I configured two test scripts as below:</font></div>
<div class="gmail_default"><font color="#333399" face="verdana, sans-serif"><br></font></div><div class="gmail_default"><div class="gmail_default"><font color="#333399" face="verdana, sans-serif"><b>Script 1: Answer call, generate 1000ms silence (as above) and then record. </b></font></div>
<div class="gmail_default"><font color="#333399" face="verdana, sans-serif">This showed a steady stream of UDP data throughout the call and resulted in a recording.</font></div><div class="gmail_default"><div class="gmail_default">
<font color="#333399" face="verdana, sans-serif"><br></font></div><div class="gmail_default"><font color="#333399" face="verdana, sans-serif"><b>Script 2: Answer call, sleep for 1 second and then record. </b></font></div>
<div class="gmail_default"><font color="#333399" face="verdana, sans-serif">This showed a steady stream of UDP data throughout the call but resulted in a blank recording.</font></div><div class="gmail_default"><font color="#333399" face="verdana, sans-serif"><br>
</font></div><div class="gmail_default"><font color="#333399" face="verdana, sans-serif">This is interesting and indicates to me that there is probably something that the FreeSWITCH file play operation is doing (even when its a silence stream) that is not carried out by the record application. I would expect that its unusual for a telephony application to want to answer and record without any play operations first.</font></div>
<div class="gmail_default"><font color="#333399" face="verdana, sans-serif"><br></font></div><div class="gmail_default"><font color="#333399" face="verdana, sans-serif">Thanks again,</font></div><div class="gmail_default">
<font color="#333399" face="verdana, sans-serif"><br></font></div><div class="gmail_default"><font color="#333399" face="verdana, sans-serif">Callum</font></div></div></div></div></blockquote></div><br></div></body></html>