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

[Martin Joseph]

On 2006-10-26 03:18:20 -0700, Stefan Agethen 
<stagethen at baeckereiagethen.de> 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?