Posted: Tue Jan 16, 2007 2:01 pm Post subject: [asterisk-users] TDM2400 Hardware Echo Cancel
Good Day List,
I'm having some issues with echo cancel on my Asterisk box, and have
done
extensive reading and have gained some useful pointers from this list
but have a couple of hopefully fairly simple questions.
The Asterisk box is connected via 20 FXO ports on a TDM2400 with the
Hardware echo cancel module. Echo cancel almost works, but the users
hear
what they describe as a 'crackle' coming back when they talk.
I want to tune to echo canceller, but am unsure if any of the options
provided have any effect on the hardware module. Do the settings such
as
echocancel and echotraining in Zapata.conf affect the hardware module?
Would I be better removing the hardware module and tuning the software
echo
canceller?
The asterisk box is currently running 1.2.13, with zaptel 1.2. Would
you
advise upgrading to the newer Zaptel drivers? I don't want to upgrade
Asterisk itself just yet.
Any help or pointers to documentation regarding the hardware echo cancel
module would be greatly appreciated,
Thanks,
Adam Sharples
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Posted: Tue Jan 16, 2007 7:21 pm Post subject: [asterisk-users] TDM2400 Hardware Echo Cancel
Adam Sharples wrote:
Quote:
I want to tune to echo canceller, but am unsure if any of the options
provided have any effect on the hardware module. Do the settings such
as
echocancel and echotraining in Zapata.conf affect the hardware module?
No. Hardware echo cancelers on Digium cards are either 'on' or 'off',
there are no tuning parameters.
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Posted: Tue Jan 23, 2007 7:43 pm Post subject: [asterisk-users] TDM2400 Hardware Echo Cancel
I have been having the same problems since installing a TDM2400 with
hardware echo canceller. The best way to describe the sound is a
background crackle or hiss that just can't be filtered out.
Increasing the RX gain just makes the problem worse.
SIP to SIP calls are flawless.
An acquaintance told me the analog line level is too low, but when
plugging a regular phone into the line, the signal is plenty loud
enough.
I am curious if anyone else had similar issues with the TDM2400 card and
if they have resolved it.
I'm having some issues with echo cancel on my Asterisk box, and have
done
extensive reading and have gained some useful pointers from this list
but have a couple of hopefully fairly simple questions.
The Asterisk box is connected via 20 FXO ports on a TDM2400 with the
Hardware echo cancel module. Echo cancel almost works, but the users
hear
what they describe as a 'crackle' coming back when they talk.
I want to tune to echo canceller, but am unsure if any of the options
provided have any effect on the hardware module. Do the settings such
as
echocancel and echotraining in Zapata.conf affect the hardware module?
Would I be better removing the hardware module and tuning the software
echo
canceller?
The asterisk box is currently running 1.2.13, with zaptel 1.2. Would
you
advise upgrading to the newer Zaptel drivers? I don't want to upgrade
Asterisk itself just yet.
Any help or pointers to documentation regarding the hardware echo
cancel
Quote:
module would be greatly appreciated,
Thanks,
Adam Sharples
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
Posted: Tue Jan 23, 2007 8:33 pm Post subject: [asterisk-users] TDM2400 Hardware Echo Cancel
Had the exact same issue with the hardware canceller. If I set echocancel=no then the problem goes away.
Very weird that the static only happens on our side and we only hear it.
----- Original Message -----
From: "Webster, Andrew" <awebster@connectalk.com>
To: "Asterisk Users Mailing List - Non-Commercial Discussion" <asterisk-users@lists.digium.com>
Sent: Tuesday, January 23, 2007 2:42 PM
Subject: RE: [asterisk-users] TDM2400 Hardware Echo Cancel
I have been having the same problems since installing a TDM2400 with
hardware echo canceller. The best way to describe the sound is a
background crackle or hiss that just can't be filtered out.
Increasing the RX gain just makes the problem worse.
SIP to SIP calls are flawless.
An acquaintance told me the analog line level is too low, but when
plugging a regular phone into the line, the signal is plenty loud
enough.
I am curious if anyone else had similar issues with the TDM2400 card and
if they have resolved it.
I'm having some issues with echo cancel on my Asterisk box, and have
done
extensive reading and have gained some useful pointers from this list
but have a couple of hopefully fairly simple questions.
The Asterisk box is connected via 20 FXO ports on a TDM2400 with the
Hardware echo cancel module. Echo cancel almost works, but the users
hear
what they describe as a 'crackle' coming back when they talk.
I want to tune to echo canceller, but am unsure if any of the options
provided have any effect on the hardware module. Do the settings such
as
echocancel and echotraining in Zapata.conf affect the hardware module?
Would I be better removing the hardware module and tuning the software
echo
canceller?
The asterisk box is currently running 1.2.13, with zaptel 1.2. Would
you
advise upgrading to the newer Zaptel drivers? I don't want to upgrade
Asterisk itself just yet.
Any help or pointers to documentation regarding the hardware echo
cancel
Quote:
module would be greatly appreciated,
Thanks,
Adam Sharples
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
Posted: Thu Jan 25, 2007 7:42 am Post subject: [asterisk-users] TDM2400 Hardware Echo Cancel
I had the exact same problem, removing the hardware echo fix the problem but
this is not a solution for a production system. I'm now using another brand
of hardware.
David
-----Message d'origine-----
De : asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] De la part de Webster,
Andrew
Envoyé : 23 janvier 2007 14:42
À : Asterisk Users Mailing List - Non-Commercial Discussion
Objet : RE: [asterisk-users] TDM2400 Hardware Echo Cancel
I have been having the same problems since installing a TDM2400 with
hardware echo canceller. The best way to describe the sound is a
background crackle or hiss that just can't be filtered out.
Increasing the RX gain just makes the problem worse.
SIP to SIP calls are flawless.
An acquaintance told me the analog line level is too low, but when
plugging a regular phone into the line, the signal is plenty loud
enough.
I am curious if anyone else had similar issues with the TDM2400 card and
if they have resolved it.
I'm having some issues with echo cancel on my Asterisk box, and have
done
extensive reading and have gained some useful pointers from this list
but have a couple of hopefully fairly simple questions.
The Asterisk box is connected via 20 FXO ports on a TDM2400 with the
Hardware echo cancel module. Echo cancel almost works, but the users
hear
what they describe as a 'crackle' coming back when they talk.
I want to tune to echo canceller, but am unsure if any of the options
provided have any effect on the hardware module. Do the settings such
as
echocancel and echotraining in Zapata.conf affect the hardware module?
Would I be better removing the hardware module and tuning the software
echo
canceller?
The asterisk box is currently running 1.2.13, with zaptel 1.2. Would
you
advise upgrading to the newer Zaptel drivers? I don't want to upgrade
Asterisk itself just yet.
Any help or pointers to documentation regarding the hardware echo
cancel
Quote:
module would be greatly appreciated,
Thanks,
Adam Sharples
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --
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