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<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><span style='font-size:10.0pt;font-family:"Lucida Sans Unicode","sans-serif"'>Nate
Aliberto<br>
<br>
</span><span style='color:#1F497D'><o:p></o:p></span></p>
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