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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I can’t tell you how many times I worked with TAC on “static”
and it was never the 2-wire to 4-wire or any kind of impendence problem! Yet
that is the first thing they say (they must be reading too many books).<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>With a 7940 static noise is a problem with the phone load.
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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>Thomas Dupas<br>
<b>Sent:</b> Thursday, February 12, 2009 10:57 AM<br>
<b>To:</b> Morgan Andreas; cisco-voip@puck.nether.net<br>
<b>Subject:</b> Re: [cisco-voip] Nortel phones on Cisco Swtich<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:black'>Hi,</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>First
of all, static noise looks like an impedance problem/mismatch on the PSTN/pots
side, and not like a QoS problem.</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>But
anyway, the QoS setup would be similar to Cisco phones:</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>-
I assume the phone will send out 802.1p/dscp markings</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> -
if so you need to configure the switch to trust those markings</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
- if not you need to define a policy to match that traffic (based on the
incoming port, ip, protocol or ...) and mark it yourself</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>-
you need to assign those markings to the (hw-)queues of your choice on the
interface on the switches</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>-
you need to define LLQ on the routers to assign priority bandwidth to those
packets/markings</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>the
following url will explain all the steps in detail:</span><o:p></o:p></p>
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<p class=MsoNormal><a
href="http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_35_se/configuration/guide/swqos.html">http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_35_se/configuration/guide/swqos.html</a><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Best
Regards,</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
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<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Thomas</span><o:p></o:p></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'>Van:</span></b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> cisco-voip-bounces@puck.nether.net
[cisco-voip-bounces@puck.nether.net] namens Morgan Andreas
[morgan.andreas@gmail.com]<br>
<b>Verzonden:</b> donderdag 12 februari 2009 16:48<br>
<b>Aan:</b> cisco-voip@puck.nether.net<br>
<b>Onderwerp:</b> [cisco-voip] Nortel phones on Cisco Swtich</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>I
have a Nortel BCM200 phone system w/ I2002 & I2004 phones. We are needing
to configure QOS on the 3560Gs they have in place for their Nortel phones. They
are currently complaining of static on all the phone lines including their
intercom system (thru the Nortel phone system). We have them Vlan'd out
(voice/data) but not sure of the commands to enable the QOS on switch for the
phones. Does anyone happen to have any incite as to what needs to be done in
order to enable the QOS for these phones? Any help would be appreciated.<br>
<br>
Thanks</span><o:p></o:p></p>
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