[Asterisk-Users] TE411P Really Bad Echo

[Matthew Fredrickson]

On Feb 5, 2006, at 9:36 PM, Stagg Shelton wrote:

> I just implemented a system using a TE411P hardware echo cancellation
> card.  Per Digium, I setup zaptel.conf, and zapata.conf the same way as
> I always have.  To my surprise calls out to the PSTN had a terrible
> echo. 1 - 2 second delay, and quite clear.  The echo was so bad that I
> had to remove the hardware echo cancellation module from the card.  We
> are only using the 1st span of this card right now, and we have a
> tdm400p with 4 fxs modules installed as well.
>
> If anyone has experience with this card, can you tell me if I am 
> missing
> something.


1 to 2 seconds?!  That's ridiculously huge.  I don't think you'll find 
a echo canceler anywhere that can fix your echo problem.  If it gets 
better with the VPM disabled, then definitely contact Digium 
tech-support about it.

Matthew Fredrickson