Thanks for your suggestion. CHANNEL_HOLD/UNHOLD don&#39;t appear to produce any messages. <div><div><br></div><div><div class="gmail_quote">On 12 February 2013 01:02, Seven Du <span dir="ltr">&lt;<a href="mailto:dujinfang@gmail.com" target="_blank">dujinfang@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">
                <div>There&#39;s CHANNEL_HOLD  and CHANNEL_UNHOLD messages
                </div><div><br></div><div>And take a look at <a href="http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_verbose_events" target="_blank">http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_verbose_events</a></div>

<div><br></div><div>Is there a member-id var bind on channel? I only see it on conference::maintenance messages, not sure though.</div><div><div><div><br></div>
                 
                <p style="color:#a0a0a8">On Tuesday, February 12, 2013 at 12:56 AM, Martyn Davies wrote:</p>
                </div></div><blockquote type="cite" style="border-left-style:solid;border-width:1px;margin-left:0px;padding-left:10px">
                    <span><div><div><div><div>I&#39;m trying to process CHANNEL_CALLSTATE events (in an ESL socket application) to extract the HELD/ACTIVE messages for conference participants.<div><br></div><div>
One problem for me is that the name of the conference and the member-id for that call are not available to me in the callstate messages, and therefore it is difficult to associated calls (going HELD and ACTIVE) with the conference.  Is there any way to get the callstate messages to include custom variables? This would fix the problem for me.</div>


<div><br></div><div>Regards,</div><div>Martyn</div><div><br></div><div> </div>
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