[Asterisk-Users] TE411P Really Bad Echo

[Rob Lith]

It claims to have "carrier-grade algorithms" - don't glibly translate that
to carrier grade hardware, it's a PCI card...

Rob

On 2/8/06, Matt <mattl at xgforce.com> wrote:
>
> try sangoma carrier grade 104d hardware EC card. we're using it ourself.
>
> Best Regards
>
> Matt
> ----- Original Message -----
> From: "Anthony Rodgers" <Anthony_Rodgers at dnv.org>
> To: "Asterisk Users Mailing List - Non-Commercial Discussion"
> <asterisk-users at lists.digium.com>
> Sent: Tuesday, February 07, 2006 12:57 PM
> Subject: Re: [Asterisk-Users] TE411P Really Bad Echo
>
>
> > For what it's worth, we have been going through very similar issues
> > with a TE411P - with Digium support, we have basically gone as far as
> > we can with the HW EC, and are now using MG2 with much better results.
> >
> > We have a Ditech EC box on order.....
> >
> > Regards,
> > --
> > Anthony Rodgers
> > Business Systems Analyst
> > District of North Vancouver
> > Web: http://www.dnv.org
> > RSS Feed: http://www.dnv.org/rss.asp
> >
> >
> > On Feb 7, 2006, at 7:36 AM, Matthew Fredrickson wrote:
> >
> > >
> > > 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
> > >
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