[Asterisk-Users] Long and variable echo

[Eric "ManxPower" Wieling]

Kristof Hardy wrote:
>> The problem has been consistent from 1.0 through CVS to 1.2, and 
>> across different machines and distributions. Does anyone have any 
>> suggestions on how I can deal with this? I have had echo cancellation 
>> happening, but half-duplex speech is not acceptable.
> 
> You're not using zaptel, what are you using to connect to the outside? 
> (and is it PSTN/ISDN ?)
> 
> Can you advice on what hardware you're running, that would help..

Echo needs to be canceled at the point where the PSTN is converted to VoIP.