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<span style="font-family: 'Lucida Grande'; font-size: 10px;">I believe you're correct in that assumption. As long as the phone has registered during the current "uptime session" of the CUCM, the IP address is cached in the system.<br>
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Thanks!<br>
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<b style="color: rgb(0, 0, 0); ">Matthew Berry, CCIE #26721 (Voice) </b><b style="color: rgb(0, 0, 0); font-weight: normal; "><span class="Apple-converted-space"> </span> <br>
</b>Sr. Unified Communications Engineer,<span class="Apple-converted-space"> </span><font class="Apple-style-span" color="#ff201a"><b>CDW</b></font></div>
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+1.763.592.5987 | protocol.by/matthewberry</div>
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<div>On Nov 11, 2011, at 6:42 AM, Matthew Loraditch wrote:</div>
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<blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: 'Lucida Grande'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">
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<div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">
<span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">I thought I had read something along the lines of phones only show up as unknown if they had never registered to CUCM during the current cluster uptime. Basically only
a full reboot would put an unregistered phone to unknown. I don’t remember where I read this and I could be totally wrong so don’t hold me to it, but if I’m close to right hopefully it might jog someone else’s memory of the complete answer.<o:p></o:p></span></div>
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<span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p> </o:p></span></div>
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<span style="font-size: 10pt; font-family: Arial, sans-serif; color: rgb(31, 73, 125); "><o:p> </o:p></span></div>
<div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">
<b><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: black; ">Matthew Loraditch, CCVP, CCNA, CCDA</span></b><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: black; "><br>
1965 Greenspring Drive<o:p></o:p></span></div>
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<span style="font-size: 11pt; font-family: Calibri, sans-serif; color: black; ">Timonium, MD 21093<span class="Apple-converted-space"> </span><br>
<a href="mailto:support@heliontechnologies.com" style="color: blue; text-decoration: underline; "><span style="color: black; ">support@heliontechnologies.com</span></a><br>
(p) (410) 252-8830<br>
(F) (443) 541-1593<br>
<br>
Visit us at<span class="Apple-converted-space"> </span><a href="http://www.heliontechnologies.com/" style="color: blue; text-decoration: underline; "><span style="color: black; ">www.heliontechnologies.com</span></a><span class="Apple-converted-space"> </span><br>
Support Issue? Email<span class="Apple-converted-space"> </span><a href="mailto:support@heliontechnologies.com" style="color: blue; text-decoration: underline; "><span style="color: black; ">support@heliontechnologies.com</span></a><span class="Apple-converted-space"> </span>for
fast assistance!</span><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p></o:p></span></div>
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<div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">
<span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p> </o:p></span></div>
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<b><span style="font-size: 10pt; font-family: Tahoma, sans-serif; ">From:</span></b><span style="font-size: 10pt; font-family: Tahoma, sans-serif; "><span class="Apple-converted-space"> </span><a href="mailto:cisco-voip-bounces@puck.nether.net" style="color: blue; text-decoration: underline; ">cisco-voip-bounces@puck.nether.net</a><span class="Apple-converted-space"> </span>[mailto:cisco-voip-bounces@puck.nether.net]<span class="Apple-converted-space"> </span><b>On
Behalf Of<span class="Apple-converted-space"> </span></b>Simon Nhlapo (ZA)<br>
<b>Sent:</b><span class="Apple-converted-space"> </span>Friday, November 11, 2011 7:14 AM<br>
<b>To:</b><span class="Apple-converted-space"> </span><a href="mailto:cisco-voip@puck.nether.net" style="color: blue; text-decoration: underline; ">cisco-voip@puck.nether.net</a><br>
<b>Subject:</b><span class="Apple-converted-space"> </span>[cisco-voip] Does anyone know how long it takes a phone that has been disconnected from CUCM to change from an unregistered status to an unknown status?<o:p></o:p></span></div>
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<o:p> </o:p></div>
<p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 12pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">
<span lang="EN-ZA"><o:p> </o:p></span></p>
<div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">
<span lang="EN-ZA" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">Hi All,<o:p></o:p></span></div>
<div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">
<span lang="EN-ZA" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p> </o:p></span></div>
<div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">
<span class="googqs-tidbit1"><b><span lang="EN-ZA" style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(170, 255, 170); background-position: initial initial; background-repeat: initial initial; ">Does</span></b></span><span class="googqs-tidbit1"><span lang="EN-ZA" style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; "><span class="Apple-converted-space"> </span>anyone
know<span class="Apple-converted-space"> </span><b><span style="background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(255, 255, 128); background-position: initial initial; background-repeat: initial initial; ">how</span></b></span></span><span lang="EN-ZA" style="font-size: 10pt; font-family: Verdana, sans-serif; color: black; "><span class="Apple-converted-space"> </span><span class="googqs-tidbit1"><b><span style="background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(170, 170, 255); background-position: initial initial; background-repeat: initial initial; ">long</span></b><span class="Apple-converted-space"> </span>it<span class="Apple-converted-space"> </span><b><span style="background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(255, 255, 128); background-position: initial initial; background-repeat: initial initial; ">takes</span></b><span class="Apple-converted-space"> </span>a<span class="Apple-converted-space"> </span><b><span style="background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(170, 255, 255); background-position: initial initial; background-repeat: initial initial; ">phone</span></b><span class="Apple-converted-space"> </span>that
has been disconnected from CUCM<span class="Apple-converted-space"> </span><b><span style="background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(170, 170, 255); background-position: initial initial; background-repeat: initial initial; ">to</span></b><span class="Apple-converted-space"> </span>change
from an unregistered status<span class="Apple-converted-space"> </span><b><span style="background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(170, 170, 255); background-position: initial initial; background-repeat: initial initial; ">to</span></b><span class="Apple-converted-space"> </span>an<span class="Apple-converted-space"> </span><b><span style="background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(170, 255, 170); background-position: initial initial; background-repeat: initial initial; ">unknown</span></b></span><span class="Apple-converted-space"> </span>status?</span><span lang="EN-ZA" style="font-size: 10pt; font-family: Verdana, sans-serif; color: rgb(31, 73, 125); "><o:p></o:p></span></div>
<div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">
<span lang="EN-ZA" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); "><o:p> </o:p></span></div>
<div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; ">
<span lang="EN-ZA" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">Regards<o:p></o:p></span></div>
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<span lang="EN-ZA" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">Simon<o:p></o:p></span></div>
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