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

[Klaus Darilion]

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.

regards
klaus

> 
> On 7 May 2007 12:45, Eric "ManxPower" Wieling wrote:
>> Generally, once the audio is converted to VoIP audio
>> latency is far too high for echo canceling to work.  Echo
>> needs to be canceled BEFORE the call is converted to
>> VoIP.
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