[asterisk-users] What are the reasons for VoIP echo?

[Steve Underwood]

On 10/03/2009 02:18 AM, Martin wrote:
>> You might like to know that a number of people have used the open source
>> OSLEC canceller to replace the rather broken one Linksys put in their ATAs.
>>      
> there's no way to cancel the sip device in Asterisk, is there ? other
> than going through zap ...
> I wrote once a virtual zaptel driver device that could be used for
> this purpose ...
>    
To be more specific, peopel have replaced SPA3102s, with a hopeless echo 
cancellers on the PSTN port, with a Blackfin box using OSLEC and running 
Asterisk. OSLEC works extremely well on almost any consumer line.

Steve