asterisk users - Feb 2006 - SV: BAD/GOOD Echo Cancel

Im curious. Does anyone have experienced echo-problems that later where solved
by buying a hardware-echo canceller such as the Wildcard TE411P?

Regards,
Jan

-----Ursprungligt meddelande-----
Fr?n: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com] F?r James Harper
Skickat: den 6 februari 2006 11:46
Till: Asterisk Users Mailing List - Non-Commercial Discussion
?mne: RE: [Asterisk-Users] BAD/GOOD Echo Cancel
> 
> virtually all software echo cancelers cannot get double echo removed 
> completly.  It can get the first one but not the second one.  There
are
> instances where you get a 2nd echo, so ...  Asterisk is no exception 
> from this afaik nothing software only based is.
> 
> If you really want good echo cancelation a hardware solution is the
way
> to go.
> 
Just an enquiring mind wanting to know, but how is a hardware solution different
to a software solution? The echo cancellers in the Digium hardware presumably
just use the same sort of algorithms as the software versions, so it is just
that they are dedicated and perform better, that they are closer to the source
of the echo, or some other thing that I've overlooked?

Thanks

james
_______________________________________________
--Bandwidth and Colocation provided by Easynews.com --

Asterisk-Users mailing list
To UNSUBSCRIBE or update options visit:
   http://lists.digium.com/mailman/listinfo/asterisk-users

On Feb 6, 2006, at 5:04 AM, <jan.sarin@securia.se>  
<jan.sarin@securia.se> wrote:
> Im curious. Does anyone have experienced echo-problems that later  
> where solved by buying a hardware-echo canceller such as the  
> Wildcard TE411P?
Yes. I turned off all echo can on the wildcards and bought external.  
Point towards carrier and works like a charm. btw - use acoustic echo  
can not hybrid ec.