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

[Eric "ManxPower" Wieling]

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.