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<DIV dir=ltr align=left><SPAN class=100270816-16082006><FONT face=Arial
color=#0000ff size=2>Thanks Wes,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=100270816-16082006><FONT face=Arial
color=#0000ff size=2>Just what I was wanting to know..</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=100270816-16082006><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=100270816-16082006><FONT face=Arial
color=#0000ff size=2>Jim</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
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<FONT face=Tahoma size=2><B>From:</B> Wes Sisk [mailto:wsisk@cisco.com]
<BR><B>Sent:</B> Wednesday, August 16, 2006 10:29 AM<BR><B>To:</B> Jim
McBurnett<BR><B>Cc:</B> Voll, Scott;
cisco-voip@puck.nether.net<BR><B>Subject:</B> Re: [cisco-voip]
CER<BR></FONT><BR></DIV>
<DIV></DIV>Disclaimer - this is purely personal opinion and does not reflect any
position of Cisco as a company<BR><BR>I would use 4.2 with device
mobility.<BR>1. CER has to do a discovery to find the phone in the new
location. Depending on how often you have the discovery run, you still
have a window of opportunity where a phone could move and reach the wrong 911
operator. With device mobility, as soon as the phone registers it gets a
new CSS.<BR>2. CTI interface to CM is still prone to failure. CTI or CER
could go down and all 911 calls would route to a default 911 operator.
With device mobility the only failure is if the GW or CM goes down. If those are
down you cannot complete a call anyway.<BR><BR>/Wes<BR><BR><BR>Jim McBurnett
wrote:
<BLOCKQUOTE
cite=midD2BBAE709B4D874DAC556C7EB9D938FC1B5B97@exchange.TGASolutions.local
type="cite">
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<DIV dir=ltr align=left><SPAN class=350573112-16082006><FONT face=Arial
color=#0000ff size=2>Wes,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=350573112-16082006><FONT face=Arial
color=#0000ff size=2>then if you have a stable environment and IP addresses
are assigned in a city by location would you reccomend 4.2 CSS vs
CER?</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=350573112-16082006></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=350573112-16082006><FONT face=Arial
color=#0000ff size=2>thanks,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=350573112-16082006><FONT face=Arial
color=#0000ff size=2>jim</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
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<FONT face=Tahoma size=2><B>From:</B> <A class=moz-txt-link-abbreviated
href="mailto:cisco-voip-bounces@puck.nether.net">cisco-voip-bounces@puck.nether.net</A>
[<A class=moz-txt-link-freetext
href="mailto:cisco-voip-bounces@puck.nether.net">mailto:cisco-voip-bounces@puck.nether.net</A>]
<B>On Behalf Of </B>Wes Sisk<BR><B>Sent:</B> Wednesday, August 16, 2006 8:22
AM<BR><B>To:</B> Voll, Scott<BR><B>Cc:</B> <A class=moz-txt-link-abbreviated
href="mailto:cisco-voip@puck.nether.net">cisco-voip@puck.nether.net</A><BR><B>Subject:</B>
Re: [cisco-voip] CER<BR></FONT><BR></DIV>Yes, CER would address this by
discovering which switch port the phone was plugged into and then assigning a
911 ELIN based on the administratively assigned location/ELIN of that switch.
<DIV><BR class=khtml-block-placeholder></DIV>
<DIV>You can accomplish similar behavior in CM 4.2 with device mobility where
the device CSS changes based on the IP of the registering device</DIV>
<DIV><A
href="http://www.cisco.com/en/US/customer/products/sw/voicesw/ps556/products_administration_guide_chapter09186a008055af42.html">http://www.cisco.com/en/US/customer/products/sw/voicesw/ps556/products_administration_guide_chapter09186a008055af42.html</A></DIV>
<DIV><BR class=khtml-block-placeholder></DIV>
<DIV>/Wes</DIV>
<DIV><BR>
<DIV>
<DIV>On Aug 15, 2006, at 5:50 PM, Voll, Scott wrote:</DIV><BR
class=Apple-interchange-newline>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I don’t know much about CER but I
have a problem and I’m wondering if that is my
answer.<O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I have multiple sites and I have
now seen as of today people moving from one site to another site and I was not
informed. Which means due to CSS they would be call out the wrong VGW
for 911.<O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">How does CER take care of this
issue?<O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Scott<O:P></O:P></SPAN></FONT></P></DIV>
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