[asterisk-dev] Adding Octastic Soft-Echo to external SIP adapters

Klaus Darilion klaus.mailinglists at pernau.at
Mon May 7 07:09:34 MST 2007



Eric "ManxPower" Wieling wrote:
> Klaus Darilion wrote:
>>
>>
>> Vazir wrote:
>>> How than my CISCO AS5350 gets H323 VOIP and echo-cancels so exelently 
>>> :))))))
>>
>> If it is a plain H323-H323 call then there should not be any echo at all.
>>
>> If you have a PSTN<->VoIP call and the PSTN leg uses analog lines then 
>> the PSTN side will create an echo which will be cancelled by the PSTN 
>> side of the gateway.
> 
> In my experience, most echo comes from the FAR end analog loop, not your 
> local analog loop.

Yes. That's what I wanted to say.

thanks
klaus

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