[Asterisk-Users] Will Echo problems EVER be solved, I'm scared

[Steve Edwards]

Since this is a lively topic, I'll ask here...

How can I measure the interval between the original and the echo?

On Mon, 29 Aug 2005, Soner Tari wrote:

>> I'd suggest turning off echotraining on the FXS altogether, and perhaps 
>> even
>> killing the echocanceller on FXS entirely.  (you won't be getting 
>> significant
>> echo from the FXS, and the FXO should be handling it anyway) -- 
>> echocancelwhenbridged might be an interesting thing to play with as well.
>> 
>> e.g. (assuming port 1-3 are FXO and port 4-7 are FXS)
>> 
>> echocancel=64
>> echocancelwhenbridged=yes
>> echotraining=800
>> channel => 1-3
>> 
>> echocancelwhenbridged=no
>> channel => 4-7
>
> Andrew,
>
> I am sure you know that in zapata.conf parameter settings are in effect until 
> specifically overridden later on in the file. In the first paragraph you 
> suggest that I turn off both echotraining and echocanceler on FXS channels, 
> so may I correct your example, that is, do you mean something like the 
> following?:
>
> echocancel=64
> echocancelwhenbridged=yes
> echotraining=800
> channel => 1-3
>
> echocancel=no
> echocancelwhenbridged=no
> echotraining=no
> channel => 4-7
>
> Please correct me if I'm wrong, in your example echocanceler would still run 
> on connections other than TDM (such as FXS->SIP). Did you knowingly mean it? 
> With my additions above, FXS channels would never use echocanceler. Right?
>
> Thank you guys for all the help and comments. Rich's last comments were quite 
> enlighthening, as always. I never knew echocanceler could be used on FXS 
> channels. Sorry for my ignorance (but nowhere in docs or wiki could I see 
> this information, I should have thought about it, my bad).
>
> I'll try and post the results.
> Soner
>
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Thanks in advance,
------------------------------------------------------------------------
Steve Edwards      sedwards at sedwards.com      Voice: +1-760-468-3867 PST
Newline           pagesteve at sedwards.com            Fax: +1-760-731-3000