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<p class=MsoNormal><span style='color:#1F497D'>Mgcp debugs, vpm signal, ios versions,
callmanager versions…..<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
cisco-voip-bounces@puck.nether.net [mailto:cisco-voip-bounces@puck.nether.net] <b>On
Behalf Of </b>Aliberto, Nate<br>
<b>Sent:</b> Wednesday, January 27, 2010 7:55 AM<br>
<b>To:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> [cisco-voip] VG224 Analog phone dial-tone/dead-air issues<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>All,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>During a recent UC rollout, we implemented a series of
VG224s to provide fax, modem and standard analog E&M services to a good number
of devices using MGCP for management. I've observed that some of the
analog phones take an extraordinary amount of time to receive dial-tone again
after going back on hook. <o:p></o:p></p>
<p class=MsoNormal>An example would be that a user will pick up the phone and
begin dialing a number realize it's incorrect and will go back on hook to get
dial-tone again, and after doing so they will simply hear dead air. It's
almost as if a return to hook is never picked up by the VG224 or processed by
CUCM.<o:p></o:p></p>
<p class=MsoNormal>I've been trying to determine what is actually occurring
between the VG224, CUCM and Phone in this scenario so that I can implement a
mitigation. If anyone has seen this before or has some insight into a
Root-Cause/Resolution I would greatly appreciate it.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Lucida Sans Unicode","sans-serif"'>Nate Aliberto</span><span
style='color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>CONFIDENTIALITY NOTICE: This E-mail message and any attachments are for the sole use of the intended recipient(s) and may contain confidential and privileged information. Please do not copy, forward, or print this E-mail message or any attachments unless you are the intended recipient. If you are not the intended recipient, please immediately notify the sender by telephone at (866) 588-5697 and permanently delete and destroy all copies and printouts of this E-mail message and/or attachments.<o:p></o:p></pre></div>
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