<div>Wes</div>
<div> </div>
<div>Ok, I don't believe we have a codec mismatch we are using G711 and we do not use MOH, the MRGL on the device pool does not contain any MOH resources.</div>
<div> </div>
<div>Is there anyway I could check to see if there anything is interupting the control channel during the media redirection, if the call has dropped.</div>
<div> </div>
<div> </div>
<div> </div>
<div><span class="gmail_quote">On 06/12/2007, <b class="gmail_sendername">Wes Sisk</b> <<a href="mailto:wsisk@cisco.com">wsisk@cisco.com</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div text="#000000" bgcolor="#ffffff">Not necessarily.<br><br>Hold/transfer does place the call on hold. That works fine unless one of the call legs meets the following criteria in 4.1:<br><br>1) is h323 to a device that is not h323v2 compliant with empty capabilities set (ECS) support
<br>2) use the CM SIP trunk<br><br>If any call leg uses those then MTP will be required. Otherwise, generally, MTP should not be required.<br><br>Transfers typically drop calls when:<br>1) there is a codec mismatch between the ingress gateway and the MoH server. The codec negotation failure usually puts the call in a state where it cannot be resumed or it just immediately drops
<br>2) there is an error closing/opening media channels. This happens with H.323 endpoints that do not support ECS. It happens with SIP endpoints that do not handle the re-invite. It happens when there is a network condition that delays or interrupts the control channel (h323, sip, mgcp signaling) during the media redirection.
<br><span class="sg"><br>/Wes</span>
<div><span class="e" id="q_116b0e0658d96fea_2"><br><br>Jonathan Charles wrote:
<blockquote type="cite"><pre>Because when you hit the transfer key, the call is placed on hold, to
do that, you need an MTP.
Jonathan
On Dec 6, 2007 12:53 PM, Voice Noob <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:voicenoob@gmail.com" target="_blank"><voicenoob@gmail.com></a> wrote:
</pre>
<blockquote type="cite"><pre>Why would he need an MTP to transfer a call?
On Dec 6, 2007 12:47 PM, Jonathan Charles <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:jonvoip@gmail.com" target="_blank"><jonvoip@gmail.com></a> wrote:
</pre>
<blockquote type="cite"><pre>Is there an MRGL assigned to the device pool? Cuz you need an MTP to
</pre></blockquote><pre>transfer...
</pre>
<blockquote type="cite"><pre>Jonathan
On Dec 6, 2007 10:59 AM, Nick <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:csvoip@googlemail.com" target="_blank"><csvoip@googlemail.com></a> wrote:
</pre>
<blockquote type="cite"><pre>Has anyone come across an issue before where when you press the transfer
button the call gets dropped, I have one user who claims that when one
particular cell phone number calls in and she tried to transfer she
</pre></blockquote></blockquote><pre>loses
</pre>
<blockquote type="cite">
<blockquote type="cite"><pre>the call.
This is on a 7960 Version: 7.2 (4.0)
CCM 4.1(3) sr3c
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