[Asterisk-Users] Echo Training Question From a Newbie

[Kevin Williams]

I haven't had any responses, so I'll provide a bit more information and 
maybe someone will bite this time. :)

We're using four X100P cards to interface with PSTN and GS 
BudgeTone-100's on everyone's desks.

Echo is only an issue on calls from a SIP phone outbound on one of the 
X100P cards.

Again, the echo training does a really good job after the first few 
seconds of the call, but it has to re-train at the beginning of EVERY 
call.  Is there some way to have Asterisk remember it's training between 
calls?

Thank you,

-- 
Kevin Williams
  Senior Developer
  Applianz Technologies, Inc.
  kwilliams at applianz.com



Kevin Williams wrote:

> I'm running CVS code from about a week or so ago.  We've been having 
> echo problems on outbound calls to the PSTN, so this weekend I enabled 
> the echotraining flag in my zapata.conf.  This works great - after the 
> first 3 or 4 seconds of the call.  Those first few seconds have 
> terrible echo however.
>
> I was expecting the system to remember its "training" between calls - 
> is there some additional configuration flag I need to enable that?  Or 
> is there something more I need to do?
>
> Also, I read that there are alternative echo cancellation algorithms 
> available - but I haven't seen a way to specify which one should be 
> used...
>
> Thanks!
>