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<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Sinisa,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Please make sure that VAD is globally disabled on the CCM. Also,
make sure that your H323 gateways are properly configured:<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=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>h.323 signaling messages are properly “binded” to
the interface<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>make sure that your routing works fine – all packet are
talking the same path to the CCM<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>make sure that you don’t have any major QoS issues. Check
a health of all network devices in the network – CPU, cables, number of
errors on the interfaces. <o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Ask Customer do they have any “slowness” in
the network<o:p></o:p></span></p>
<pre style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>make sure that on the H.323 Gw you have voice rtp send-receive:<o:p></o:p></span></pre><pre><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><a
href="http://www.cisco.com/en/US/docs/ios/12_3/vvf_r/vrg_v1_ps1839_TSD_Products_Command_Reference_Chapter.html#wp1051361">http://www.cisco.com/en/US/docs/ios/12_3/vvf_r/vrg_v1_ps1839_TSD_Products_Command_Reference_Chapter.html#wp1051361</a><o:p></o:p></span></pre><pre
style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>make sure that you are not using default dial peer for the Voip calls<o:p></o:p></span></pre><pre><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></pre><pre><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If you still experience the problem I would recommend upgrading IOS to 12.4.15T in order to gat latest DSP firmware. Also, you may try to change signaling protocol from H.323 to MGCP just for the test. Personally I don’t like MGCP but maybe something is going on with CCM on the H.323 stack.<o:p></o:p></span></pre><pre><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></pre><pre><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>At the end, I agree with Ryan, you should grab:<o:p></o:p></span></pre><pre
style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>IP packet capture from wireshark or something<o:p></o:p></span></pre><pre
style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Ccm traces SDL and SDI<o:p></o:p></span></pre><pre
style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Debug voip ccapi<o:p></o:p></span></pre><pre
style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Debug isdn q931<o:p></o:p></span></pre><pre
style='margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo2'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>H225 and h245 debugs from the gateway<o:p></o:p></span></pre><pre><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></pre><pre><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I would recommend opening a TAC case with all those information.<o:p></o:p></span></pre><pre><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></pre><pre><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Good Luck<o:p></o:p></span></pre><pre><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>M<o:p></o:p></span></pre><pre><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></pre>
<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><b><span style='font-family:"Arial","sans-serif";color:#1F497D'>Mladen
Milanovic<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Contact Center Engineer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>CCNP, CCVP, CQS- IPTOS, IPTSS <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>CTI | Coleman Technologies, Inc.<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Cell: 954-547-5692<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Fax: 954-838-9017<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>1550 Sawgrass Corporate Parkway, Suite 360 <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Sunrise, FL 33323-2818</span><span style='font-size:8.0pt;
color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Email: </span><b><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><a href="mailto:mmilanovic@ctiusa.com"
title="mailto:mmilanovic@ctiusa.com"><span style='font-family:"Arial","sans-serif";
color:#003399'>mmilanovic@ctiusa.com</span></a></span></b><span
style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>MSN: </span><b><span style='font-size:8.0pt;font-family:
"Arial","sans-serif";color:#003399'><a
href="mailto:mladen_milanovic@hotmail.com">mladen_milanovic@hotmail.com</a></span></b><span
style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>URL: </span><b><span style='font-size:8.0pt;font-family:
"Arial","sans-serif";color:#1F497D'> </span></b><span style='font-size:
8.0pt;font-family:"Arial","sans-serif";color:#1F497D'><a
href="http://www.ctiusa.com/" title="http://www.ctiusa.com/"><b><span
style='color:#003399;text-decoration:none'>www.ctiusa.com</span></b></a></span><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>
<pre><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></pre><pre><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></pre>
<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>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<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>Djokic Sinisa<br>
<b>Sent:</b> Friday, October 10, 2008 9:57 AM<br>
<b>To:</b> 'Djokic Sinisa'; 'cisco voip'<br>
<b>Subject:</b> Re: [cisco-voip] CCM 4.1(3) audio delay !!!<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>anybody?.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>regards..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><strong><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:navy'>Sinisa Djokic</span></strong><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif";color:navy'> </span><span style='color:navy'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:navy'>System Engineer</span><span style='color:navy'><br>
</span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:navy'>CCNP,CCDA,CQS-CWLDS,CS-CIPTDS,CS-CIPCCES Cisco Certified</span><span
style='color:navy'><o:p></o:p></span></p>
<p class=MsoNormal><span style='color:navy'> <o:p></o:p></span></p>
</div>
<table class=MsoNormalTable border=0 cellpadding=0>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='color:navy'><img border=0 width=60 height=94
id="_x0000_i1027" src="cid:image001.gif@01C92AEF.884826B0"><o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='color:navy'> <o:p></o:p></span></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";
color:navy'>MDS Informaticki inzenjering</span><span style='color:navy'><br>
</span><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";
color:navy'>Bul. Arsenija Carnojevica 170</span><span style='color:navy'><br>
</span><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";
color:navy'>11070 Novi Beograd, Serbia</span><span style='color:navy'><br>
</span><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";
color:navy'>Tel: +381 11 2015 200, 2015 273</span><span style='color:navy'><br>
</span><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";
color:navy'>Fax: +381 11 3194 954</span><span style='color:navy'><br>
</span><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:navy'><a href="http://www.mds.rs">www.mds.rs</a></span><span
style='color:navy'><br>
</span><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:navy'><a href="mailto:sdjokic@mds.rs">sdjokic@mds.rs</a></span><span
style='color:navy'><o:p></o:p></span></p>
</td>
</tr>
</table>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" align=center>
</div>
<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"'> Djokic Sinisa
[mailto:sdjokic@mds.rs] <br>
<b>Sent:</b> Friday, October 10, 2008 8:12 AM<br>
<b>To:</b> 'cisco voip'<br>
<b>Subject:</b> CCM 4.1(3) audio delay !!!</span><o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>hi
group..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>does
anybody has an idea what could be the cause of the following problem..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>we
have a CCM4.1(3) cluster with 2x 2851 as a h323 gateways..the phones are 7912,
7940, 7960 and 7970..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>the
problem is as follows..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>when
external caller makes a call to IP phone inside a CCM cluster the call comes
over PSTN and PRI..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>the
IP phone rings, somebody answers the phone..caller starts to talk
immedialtely..for first 2-3 seconds person on the IP phone cannot hear
anything, and after that interval everything is fine..no conversation is
lost..just for first 2-3 seconds it looks like conversation is delayed but not
lost, and afterwards everything is fine..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>in
opposite direction..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>when
IP phone makes a call to some external number over the PSTN and PRI..external
phone rings..somebody answers.. caller starts to talk immedialtely.. external
phone can hear a caller from IP phone side but have lost first 2-3 seconds of
conversation..afterwards everything is fine..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>ther
is no firewall between any of the devices, everything is clear..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>any
ideas?..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>thanx..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>regards..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><strong><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Sinisa
Djokic</span></strong><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>
</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>System
Engineer</span><br>
<span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>CCNP,CCDA,CQS-CWLDS,CS-CIPTDS,CS-CIPCCES
Cisco Certified</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
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<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><img border=0 width=60 height=94 id="_x0000_i1025"
src="cid:image002.gif@01C92AEF.884826B0"><o:p></o:p></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal> <o:p></o:p></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>MDS
Informaticki inzenjering</span><br>
<span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>Bul.
Arsenija Carnojevica 170</span><br>
<span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>11070 Novi
Beograd, Serbia</span><br>
<span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>Tel: +381 11
2015 200, 2015 273</span><br>
<span style='font-size:7.5pt;font-family:"Verdana","sans-serif"'>Fax: +381 11
3194 954</span><br>
<span style='font-size:7.5pt;font-family:"Arial","sans-serif"'><a
href="http://www.mds.rs">www.mds.rs</a></span><br>
<span style='font-size:7.5pt;font-family:"Arial","sans-serif"'><a
href="mailto:sdjokic@mds.rs">sdjokic@mds.rs</a></span><o:p></o:p></p>
</td>
</tr>
</table>
<p class=MsoNormal><o:p> </o:p></p>
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