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Thanks Kevin,<br>
<br>
So:<br>
noise is not present recording from USB source to your laptop.<br>
noise is present even in the packets transmitted over the wire to the
phone when USB device is connected to server.<br>
<br>
Based on the nature of sound I agree with Mike that it sounds like
electrical interference. Are the server and rack grounded? When you
captured "good.au" what source of power and and ground was your laptop
using?<br>
<br>
Do you have another analog source such as an iPod or mp3 player that
would use a different, or possibly floating ground, to test with?<br>
<br>
You have eliminated most of the devices in the audio path. The only way
to isolate further inside the server is to use a root account to dump
audio directly off the linux DSP device before the IPVMSApp kernel
driver attempts to packetize it for transmission over the network. If
noise is present in that sample then it is either introduced by
electrical interface between the source and USB device or introduced in
the USB device itself.<br>
<br>
/Wes<br>
<br>
<br>
On Tuesday, February 02, 2010 5:17:53 PM, Norton, Mike
<a class="moz-txt-link-rfc2396E" href="mailto:mikenorton@pwsd76.ab.ca"><mikenorton@pwsd76.ab.ca></a> wrote:<br>
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<div class="Section1">
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);">Listening
to the capture, it sounds like ambient electrical/RF
noise is getting into the analog audio signal. I’m surprised this isn’t
a more
common problem. Server racks are probably one of the least ideal places
to try to
run unbalanced analog audio signals.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);">--
<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);">Mike
Norton<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);">I.T.
Support<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);">Peace
Wapiti School Division No. 76<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);">Helpdesk:
780-831-3080<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);">Direct:
780-831-3076<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size: 11pt; font-family: "Calibri","sans-serif"; color: rgb(31, 73, 125);"><o:p> </o:p></span></p>
<div
style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0cm 0cm;">
<p class="MsoNormal"><b><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US">From:</span></b><span
style="font-size: 10pt; font-family: "Tahoma","sans-serif";"
lang="EN-US"> <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>Kevin
Dunn<br>
<b>Sent:</b> February-02-10 1:30 PM<br>
<b>To:</b> Wes Sisk<br>
<b>Cc:</b> Cisco Voice<br>
<b>Subject:</b> Re: [cisco-voip] MOH Beeping<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Sev3 SR 613458017 Udhay has been pretty helpful
so far
checking the configuration.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">the sniff files are associated with that case,m
you should
be able to see them (otherwise I can add them in)<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">User experience: <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">I call my boss, he answers by pressing speaker
button.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">I place him on hold<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">He hears the "good.au" sound I enclosed for
Peter
to listen to<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">the sound is not unlike rapid repeated
whistling...<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">I should note that when I use the handset I
don't hear it,
but when I capture the packets it is still there, just not as loud<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom: 12pt;">Kevin<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">On Tue, Feb 2, 2010 at 2:07 PM, Wes Sisk <<a
moz-do-not-send="true" href="mailto:wsisk@cisco.com">wsisk@cisco.com</a>>
wrote:<o:p></o:p></p>
<div>
<p class="MsoNormal">In the very abstract this sounds like call
waiting
tone. Can you clarify exactly what the user is doing when "caller is
placed on hold and the speaker is activated"? What buttons is the
user pressing to accomplish this?<br>
<br>
concurrent detailed CCM and SDL traces and a packet capture of all
traffic
to/from the phone could be used to isolate the source of this tone
rather
quickly. You mention a TAC case, what is the number?<br>
<span style="color: rgb(136, 136, 136);"><br>
/Wes</span> <o:p></o:p></p>
<div>
<div>
<p class="MsoNormal"><br>
<br>
<br>
<br>
On Tuesday, February 02, 2010 12:53:17 PM, Kevin Dunn <a
moz-do-not-send="true" href="mailto:cheesevoice@gmail.com"
target="_blank"><cheesevoice@gmail.com></a>
wrote:<o:p></o:p></p>
</div>
</div>
<blockquote style="margin-top: 5pt; margin-bottom: 5pt;">
<div>
<div>
<div>
<p class="MsoNormal">Okay I have a TAC case open and I have tried
changing
configuration settings, cables and hardware...<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">CUCM 7.0.2.2000-5<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Fixed audio from XM radio (MOH-USB-AUDIO) card<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">when a caller is placed on hold and the
speaker is activated
there is an audible (and quite annoying) beeping sound playing over the
top of
the audio file. <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">It is not audible on the handset or headset.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">If I sniff the phone port and capture the
audio file I can
hear it.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">If I record the audio file with my laptop
(plugging mic cord
into lappy instead of MOH-USB) there is no beeping.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">In my mind that eliminates the XM radio and
cables, I have
changed out cables though, just in case.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">I changes out MOH-USB cards and that also did
nothing to
eliminate the issue.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">I have upgraded firmware on the phones and
that wasn't it
either.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">With the Sample Audio file (which is JAZZY)
there is no
beeping regardless of handset or speaker.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"> <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Any suggestions?<o:p></o:p></p>
</div>
</div>
</div>
<pre style="text-align: center;">
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</pre>
<div>
<pre><o:p> </o:p></pre>
<pre>_______________________________________________<o:p></o:p></pre>
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href="mailto:cisco-voip@puck.nether.net" target="_blank">cisco-voip@puck.nether.net</a><o:p></o:p></pre>
<pre><a moz-do-not-send="true"
href="https://puck.nether.net/mailman/listinfo/cisco-voip"
target="_blank">https://puck.nether.net/mailman/listinfo/cisco-voip</a><o:p></o:p></pre>
<pre> <o:p></o:p></pre>
</div>
</blockquote>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
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