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

[Stefan Agethen]

>> 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?
>
>
I can hear the Echo, the end party never got this problem.