[cisco-voip] MOH Beeping

[Kevin Dunn]

I will give it a shot

Thanks Les

On Tue, Feb 2, 2010 at 5:37 PM, Wes Sisk <wsisk at cisco.com> wrote:

> Thanks Kevin,
>
> So:
> noise is not present recording from USB source to your laptop.
> noise is present even in the packets transmitted over the wire to the phone
> when USB device is connected to server.
>
> 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?
>
> 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?
>
> 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.
>
> /Wes
>
>
>
> On Tuesday, February 02, 2010 5:17:53 PM, Norton, Mike
> <mikenorton at pwsd76.ab.ca> <mikenorton at pwsd76.ab.ca> wrote:
>
>  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.
>
>
>
> --
>
> Mike Norton
>
> I.T. Support
>
> Peace Wapiti School Division No. 76
>
> Helpdesk: 780-831-3080
>
> Direct: 780-831-3076
>
>
>
>
>
> *From:* cisco-voip-bounces at puck.nether.net [
> mailto:cisco-voip-bounces at puck.nether.net<cisco-voip-bounces at puck.nether.net>]
> *On Behalf Of *Kevin Dunn
> *Sent:* February-02-10 1:30 PM
> *To:* Wes Sisk
> *Cc:* Cisco Voice
> *Subject:* Re: [cisco-voip] MOH Beeping
>
>
>
> Sev3 SR 613458017 Udhay has been pretty helpful so far checking the
> configuration.
>
> the sniff files are associated with that case,m you should be able to see
> them (otherwise I can add them in)
>
>
>
> User experience:
>
>
>
> I call my boss, he answers by pressing speaker button.
>
> I place him on hold
>
> He hears the "good.au" sound I enclosed for Peter to listen to
>
>
>
> the sound is not unlike rapid repeated whistling...
>
> 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
>
>
>
> Kevin
>
> On Tue, Feb 2, 2010 at 2:07 PM, Wes Sisk <wsisk at cisco.com> wrote:
>
> 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?
>
> 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?
>
> /Wes
>
>
>
>
>
> On Tuesday, February 02, 2010 12:53:17 PM, Kevin Dunn
> <cheesevoice at gmail.com> <cheesevoice at gmail.com> wrote:
>
>   Okay I have a TAC case open and I have tried changing configuration
> settings, cables and hardware...
>
>
>
> CUCM 7.0.2.2000-5
>
> Fixed audio from XM radio (MOH-USB-AUDIO) card
>
>
>
> 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.
>
>
>
> It is not audible on the handset or headset.
>
>
>
> If I sniff the phone port and capture the audio file I can hear it.
>
>
>
> If I record the audio file with my laptop (plugging mic cord into lappy
> instead of MOH-USB) there is no beeping.
>
> In my mind that eliminates the XM radio and cables, I have changed out
> cables though, just in case.
>
>
>
> I changes out MOH-USB cards and that also did nothing to eliminate the
> issue.
>
>
>
> I have upgraded firmware on the phones and that wasn't it either.
>
> With the Sample Audio file (which is JAZZY) there is no beeping regardless
> of handset or speaker.
>
>
>
> Any suggestions?
>
> ------------------------------
>
>
>
>
> _______________________________________________
>
> cisco-voip mailing list
>
> cisco-voip at puck.nether.net
>
> https://puck.nether.net/mailman/listinfo/cisco-voip
>
>
>
>
>
>
>
> ------------------------------
>
> _______________________________________________
> cisco-voip mailing listcisco-voip at puck.nether.nethttps://puck.nether.net/mailman/listinfo/cisco-voip
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/cisco-voip/attachments/20100202/5fe3fea3/attachment.html>