[Asterisk-Users] Horrible BUZZZZ noise when sounds/music play on SIP phone?

[Mike Dent]

I've just noticed that this sound is not apparent when dialing from
X-Lite but is
there from the Tecom SIP phone? Does that make any more sense?
thanks
Mike



On Wed, 24 Nov 2004 22:48:36 +0100 (CET), Peter Svensson
<psvasterisk at psv.nu> wrote:
> On Wed, 24 Nov 2004, Andrei (MPI) wrote:
> 
> 
> 
> > David Boyd wrote:
> > >On Wed, 2004-11-24 at 04:14, Mike Dent wrote:
> > >>Hi,
> > >>I've recently set Asterisk up, 1.0.2 version. With 1 x X100P card and
> > >>1 SIP phone.
> > >>I've noticed some horrible buzz/rasping type of sounds! These seem to occur when
> > >>* is trying to play back some audio or sound to me?
> > >>
> > >>E.g. If I have an exten rule which plays one of the music on hold
> > >>files when I dial 800 lets say,
> > >>I get a really loud buzz for about 2 seconds and then the music plays.
> > >>
> > >>E.g. 2. If I dial 500 to connect to Digium, as the call is connecting
> > >>I get the same loud
> > >>buzz noise for 0.5 seconds or so.
> > >>
> > >>Not sure where this is coming from? I did a search on the wiki for
> > >>buzz/hum/rasp but could
> > >>not find anything.
> > >
> > >Sound like an IRQ issue. Check to see if you are sharing an interrupt on
> > >your X100P card, take a peek with " cat /proc/interrupts (on linux at
> > >least) :)
> >
> > ..and stop running X (x-windows) on your Asterisk box. :)
> 
> It could be the echo canceler. If the line is completely quiet the echo
> canceler seems to diverge. I think there was a bug in the bug tracker
> about this that got fixed a while back.
> 
> http://bugs.digium.com/bug_view_advanced_page.php?bug_id=0002820
> 
> The fix was merged on 2004-11-17. It may be a good idea to update and
> check again.
> 
> Peter
> 
> 
> 
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users at lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users
> To UNSUBSCRIBE or update options visit:
>   http://lists.digium.com/mailman/listinfo/asterisk-users
>