[asterisk-users] Re: ECHO Cancellation in SIP Calls

[Alyed Tzompa]

		Echo is generated by the analog end to where you place the call, not the IP side of it.

As far as I know the echo cancelation in the Asterisk can only be tweaked in the zapata.conf (since IP calls don't generate it)

I'm afraid there is little you can do to here.

Alyed  

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On 2006-10-26 03:18:20 -0700, Stefan Agethen 
 said:

> Hi,
> 
> i am from Germany, so excuse my School English.
> 
> I use Asteriks 1.2.12.1, zaptel 1.2.9 and mISDN Rc25 - since my update 
> of Asterisk 2 wooks ago, Echos accure in my SIP Calls.
> 
> I use SNOM 360, sometimes there is no echo (for example if i call 
> myself via SIP->Asterisk->SIPProvider->TELEKOM->ISDN)
> but if i call other people there occures Echo many times. The Routing 
> is always the same :
> SIP (SNOM) -> Asterisk -> VoIPProvider -> ISDN/POTS
> 
> Can i control the cancellation with the zapata.conf ?
> 
> I have tried this with "echocancel=..." and so on, no luck :(
> 
> I would be glad to get some help, the Docs of Asterisk dont explain how 
> to cancel Echos in ! SIP !

Are you hearing the echo, or is the far end party?

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