asterisk users - Sep 2005 - TE411P zapata.conf, monitoring echo cancellation and echo tail size

Hi all,

1. Just bought a new TE411P and about to install it replacing the existing 
TE410P. I am assuming I need to set echocancel=no and 
echocancelwhenbridged=no now that it will be done in hardware, correct?

2. Is there any way to monitor hardware echo cancellation to ensure it is 
working (apart from being on a call)?

3. The Digium webite says "By supporting 16ms with 128 channels or 64ms on 
32 channels this card will perform in the most difficult of environments.".
How do I switch the echo tail size between 16ms and 64ms?


Thanks.....
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I was told you can leave echocancel=yes with no problems, the drivers will 
see it and take over if the echocancel card is present.

I have found no method of monitoring echo cancellation(other than listening 
for echo on live calls) without altering asterisk or zaptel code. But there 
are no tools for it built in to asterisk or zaptel.

Currently the echo tails are hardcoded and are not configurable. I think 
it's set at 16ms for all channels on the card. Talking with support at 
Digium and they said it may be an option to set it differently in a future 
driver version.

MATT---


On 9/8/05, Eric Bishop <asterisk.eric@gmail.com>
wrote:
> 
> Hi all,
> 
> 1. Just bought a new TE411P and about to install it replacing the existing 
> TE410P. I am assuming I need to set echocancel=no and 
> echocancelwhenbridged=no now that it will be done in hardware, correct?
> 
> 2. Is there any way to monitor hardware echo cancellation to ensure it is 
> working (apart from being on a call)?
> 
> 3. The Digium webite says "By supporting 16ms with 128 channels or
64ms on
> 32 channels this card will perform in the most difficult of
environments.".
> How do I switch the echo tail size between 16ms and 64ms?
> 
> 
> Thanks.....
> 
> 
> 
> _______________________________________________
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<http://Easynews.com>--
> 
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> Asterisk-Users@lists.digium.com
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>
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I don't think you can switch the echo tail size, I could be mistaken, but I
think the more channels you are utilizing the smaller amount of MS you have
allocated to each channel.

Cory Andrews
Partner / Purchasing
VOIPSupply.com
++++++++++++++++++++++++++
454 Sonwil Drive
Buffalo, NY 14225
++++++++++++++++++++++++++
v - 800.398.VOIP Ext 22
f - 716.630.1548
e - Cory@VOIPSupply.com

  -----Original Message-----
  From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com]On Behalf Of Eric Bishop
  Sent: Thursday, September 08, 2005 5:47 PM
  To: Asterisk Users Mailing List - Non-Commercial Discussion
  Subject: [Asterisk-Users] TE411P zapata.conf,monitoring echo cancellation
and echo tail size


  Hi all,

  1. Just bought a new TE411P and about to install it replacing the existing
TE410P. I am assuming I need to set echocancel=no and
echocancelwhenbridged=no now that it will be done in hardware, correct?

  2. Is there any way to monitor hardware echo cancellation to ensure it is
working (apart from being on a call)?

  3. The Digium webite says "By supporting 16ms with 128 channels or 64ms
on
32 channels this card will perform in the most difficult of environments.".
How do I switch the echo tail size between 16ms and 64ms?


  Thanks.....


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