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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Inline.<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>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Chris Ward <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cisco Systems Inc. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Customer Support Engineer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Unified Communication Infrastructure<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Boxborough, MA <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>9:00am - 6:00pm Eastern <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>978-936-0217<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><a href="mailto:chrward@cisco.com">chrward@cisco.com</a><o:p></o:p></span></p>
</div>
<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"'> Djokic Sinisa
[mailto:sdjokic@mds.rs] <br>
<b>Sent:</b> Wednesday, July 23, 2008 9:54 AM<br>
<b>To:</b> Chris Ward (chrward); 'Ed Leatherman'<br>
<b>Cc:</b> 'cisco voip'<br>
<b>Subject:</b> RE: [cisco-voip] echo in CUCM 6.1 !!!<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'>hi chris..<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'>answers..<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'>- for now just 7911 and 7975 phones..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>CW - so
you have other models that are not experiencing echo? If so, what models?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>- calls out the GW - IP phone to IP phone calls are O.K..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>CW –
Points to GW. Might need a PCM capture from the GW to identify where the echo Is
being introduced. (I don’t know the procedure, but the MS TAC team would
know)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>- caller on IP phone calling outside hears echo..called number -
outside in PSTN doesn't..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>- they are using headsets when hearing echo, we tried with
speakerphone also, and collegue said that she thinks she can hear it also..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:red'>CW –
I have seen headsets cause echo in the past. If the headset produces echo have
the IP Phone users switch to the handset and see if they still hear it. When
using speakerphone, make sure the volume is less than 75%.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>we're not hearing it all time, but definetelly during a call..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>and we're not hearing it in every call, just in certain ones..<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'>ALL TROUBLED CALLS ( which we troubleshooted )are placed to:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>1. BRI - but with analoug phone attached to NT<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>2. to E1 PRI with unknow PBX <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>3. to E1 PRI with siemens PBX <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'>strange????????????????????????<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>echo or not, the simptom is caller can hear it's own voice in the
headset..<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'>isn't it?..<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>
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<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='color:navy'><img border=0 width=60 height=94
id="_x0000_i1030" src="cid:image001.gif@01C8ECAB.B1AD0C50"><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"'> Chris Ward
(chrward) [mailto:chrward@cisco.com] <br>
<b>Sent:</b> Wednesday, July 23, 2008 3:42 PM<br>
<b>To:</b> Djokic Sinisa; Ed Leatherman<br>
<b>Cc:</b> cisco voip<br>
<b>Subject:</b> RE: [cisco-voip] echo in CUCM 6.1 !!!</span><o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Got a couple questions:<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'>-You mentioned the problem was on 7975 and 7911 phones, does
this imply that you have a 7961 or some other model that doesn’t
experience this?<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'>-Also, Is the echo heard only on calls out the GW? Are IP phone
to IP Phone calls ok?<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'>-Who hears the echo? Both sides of the call or only one side?
(If only one side, which side)<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'>-Are the callers hearing echo using headsets or speaker phone
with the volume turn up? If they switch to handsets does the problem go away?<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>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Echo is an analog problem, so we should try and focus on the
analog elements. This means the DSPs in the Phones (resolved by firmware
upgrades), DSPs in the GW (IOS upgrades), or potentially a Telco issue.<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>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Chris Ward <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cisco Systems Inc. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Customer Support Engineer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Unified Communication Infrastructure<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Boxborough, MA <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>9:00am - 6:00pm Eastern <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>978-936-0217<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><a href="mailto:chrward@cisco.com">chrward@cisco.com</a><o:p></o:p></span></p>
</div>
<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> Wednesday, July 23, 2008 9:32 AM<br>
<b>To:</b> 'Ed Leatherman'<br>
<b>Cc:</b> 'cisco voip'<br>
<b>Subject:</b> Re: [cisco-voip] echo in CUCM 6.1 !!!<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'>yup..<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'>i've read all about it..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>but we cannot make the situation any better..<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'>we played with the config on VG, and upgraded IOS on it..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>but no help..<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'>i mentioned CUCM and phones just to provide whole scenario..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>although, maybe firmware in phones can have something to do with it,
even i don't think it should..<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'>and, we tested by placing calls to that " trouble outside
numbers " from another CUCM system, from another PRI, and no echo is
heard..<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'>so, it can only be problem on system in place, or maybe TELCO PRI..<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'>thanx..<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:image002.gif@01C8ECAB.B1AD0C50"><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"'> Ed Leatherman
[mailto:ealeatherman@gmail.com] <br>
<b>Sent:</b> Wednesday, July 23, 2008 2:51 PM<br>
<b>To:</b> Djokic Sinisa<br>
<b>Cc:</b> cisco voip<br>
<b>Subject:</b> Re: [cisco-voip] echo in CUCM 6.1 !!!</span><o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'>Sinisa,<br>
<br>
Have you seen the troubleshooting guides on <a href="http://cisco.com">cisco.com</a>
regarding echo? <br>
<a
href="http://www.cisco.com/en/US/tech/tk652/tk698/technologies_tech_note09186a0080149a1f.shtml">http://www.cisco.com/en/US/tech/tk652/tk698/technologies_tech_note09186a0080149a1f.shtml</a><br>
<br>
The echo is probably less to do with your CUCM and IP Phones and more to do
with the gateway and the outside telephone systems your people are calling.<br>
<br>
Ed<o:p></o:p></p>
<div>
<p class=MsoNormal>On Wed, Jul 23, 2008 at 8:19 AM, Djokic Sinisa
<sdjokic@mds.rs> wrote:<o:p></o:p></p>
<div>
<div>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>hi guys..</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>did anybody
had issues with echo in system with CUCM 6.1.2 and 2821 with 12.4 code ( varios
version - 12.4.9T6, 12.4.15T etc. ), vwic-1mft-t1/e1 card and PVDM2-48..</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>the echo can
be heard when call is placed to certain phone numbers, and it is noticed on
7975 and 7911 phones - the only phone types in system..</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>we changed
everything we could in VG config, from echo cancel coverage, IOS image to
attenuation..and nothing helped..</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>any ideas..</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>thanx..</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>regards..</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p><b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Sinisa
Djokic</span></b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>
</span><o:p></o:p></p>
<p><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> <o:p></o:p></p>
<table class=MsoNormalTable border=0 cellpadding=0>
<tr>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p><img border=0 width=60 height=94 id="_x0000_i1025"
src="cid:image002.gif@01C8ECAB.B1AD0C50"><o:p></o:p></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p> <o:p></o:p></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p><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" target="_blank">www.mds.rs</a></span><br>
<span style='font-size:7.5pt;font-family:"Arial","sans-serif"'><a
href="mailto:sdjokic@mds.rs" target="_blank">sdjokic@mds.rs</a></span><o:p></o:p></p>
</td>
</tr>
</table>
<p> <o:p></o:p></p>
</div>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
_______________________________________________<br>
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<a href="https://puck.nether.net/mailman/listinfo/cisco-voip" target="_blank">https://puck.nether.net/mailman/listinfo/cisco-voip</a><o:p></o:p></p>
</div>
<p class=MsoNormal><br>
<br clear=all>
<br>
-- <br>
Ed Leatherman<br>
Senior Voice Engineer<br>
West Virginia University<br>
Telecommunications and Network Operations <o:p></o:p></p>
</div>
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