asterisk users - Jun 2003 - Disabled echo canceller because of tone (rx)

Does anyone know what this means?  It is in DMESG, and we have
people complaining about echo.

Disabled echo canceller because of tone (rx)

John

I think when you exceed the txgain or rxgain settings than the echo
canceller might turn off.

You can find if the pending call has echo canceller turned on when you do
"zap show channel <channel_no>" on the CLI.

Martin

On Fri, 13 Jun 2003, John Congdon wrote:
> Does anyone know what this means?  It is in DMESG, and we have
> people complaining about echo.
>
> Disabled echo canceller because of tone (rx)
>
> John
>
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users@lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users
>

On Fri, 2003-06-13 at 08:30, John Congdon wrote:
> Does anyone know what this means?  It is in DMESG, and we have
> people complaining about echo.
> 
> Disabled echo canceller because of tone (rx)
> 
> John
I've seen this too, and have wondered exactly what it means.  Does it
mean that the echo canceller has been disabled for that call?  That
channel?  That entire span?  The whole card?  When does the echo
canceller get turned back on, if ever?

Jared Smith

At 10:30 2003-06-13 -0400, John Congdon wrote:
>Does anyone know what this means?  It is in DMESG, and we have
>people complaining about echo.
>
>Disabled echo canceller because of tone (rx)

Guess: to prevent multiple echo cancellers from working on the same call, 
an echo canceller adds a tone -- was it 100 Hz? -- to the voice path. Other 
echo cancellers, after detecting the tone, will stop.



-- 
  Moshe Yudkowsky
  Disaggregate
  2952 W Fargo
  Chicago, IL 60645 USA

  www.Disaggregate.com
  speech@pobox.com
  +1 773 764 8727

Well I just checked the zaptel.c not guessed and it looks
like this message pops in when the fax/modem transmit the echo canceller
disable tones.

regards
Martin

On Fri, 13 Jun 2003, Martin Pycko wrote:
> I think when you exceed the txgain or rxgain settings than the echo
> canceller might turn off.
>
> You can find if the pending call has echo canceller turned on when you do
> "zap show channel <channel_no>" on the CLI.
>
> Martin
>
> On Fri, 13 Jun 2003, John Congdon wrote:
>
> > Does anyone know what this means?  It is in DMESG, and we have
> > people complaining about echo.
> >
> > Disabled echo canceller because of tone (rx)
> >
> > John
> >
> > _______________________________________________
> > Asterisk-Users mailing list
> > Asterisk-Users@lists.digium.com
> > http://lists.digium.com/mailman/listinfo/asterisk-users
> >
>
>

The "tone" being referenced here is the 2100Hz echo cancel disable
tone.

Mark

On Fri, 13 Jun 2003, Martin Pycko wrote:
> I think when you exceed the txgain or rxgain settings than the echo
> canceller might turn off.
>
> You can find if the pending call has echo canceller turned on when you do
> "zap show channel <channel_no>" on the CLI.
>
> Martin
>
> On Fri, 13 Jun 2003, John Congdon wrote:
>
> > Does anyone know what this means?  It is in DMESG, and we have
> > people complaining about echo.
> >
> > Disabled echo canceller because of tone (rx)
> >
> > John
> >
> > _______________________________________________
> > Asterisk-Users mailing list
> > Asterisk-Users@lists.digium.com
> > http://lists.digium.com/mailman/listinfo/asterisk-users
> >
>
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users@lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users
>