asterisk users - Sep 2004 - successful echo cancellation!!! (multitech)

We recently had a customer install that went horribly wrong.  Serious
echo (pots lines into a cac cb) that, although * did a good job
getting rid of alot of it, could not get rid of it all.  We tried
everything, every canceller, gain setting, etc...  combination
possible to no avail.

Both the vegastream and mediatrix boxes also could not get rid of all
of the echo.

So, on an off chance, we bought an 8 port fxs/fxo/e&m gateway made by
multitech.  The echo cancellation on this device is amazing.  There is
no trace of the echo and the conversation is still full duplex.  And,
the box works perfectly with asterisk.  Unfortunately, the retail
price on these boxes is $3k.

Just thought I'd share my experience...

-- 
____________
Joe Antkowiak
antkojm1 (at) gmail.com

> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-
> bounces@lists.digium.com] On Behalf Of Joe Antkowiak
> Sent: Wednesday, September 08, 2004 3:36 PM
> To: asterisk-users@lists.digium.com
> Subject: [Asterisk-Users] successful echo cancellation!!! (multitech)
> 
> We recently had a customer install that went horribly wrong.  Serious
> echo (pots lines into a cac cb) that, although * did a good job
> getting rid of alot of it, could not get rid of it all.  We tried
> everything, every canceller, gain setting, etc...  combination
> possible to no avail.
> 
> Both the vegastream and mediatrix boxes also could not get rid of all
> of the echo.
> 
> So, on an off chance, we bought an 8 port fxs/fxo/e&m gateway made by
> multitech.  The echo cancellation on this device is amazing.  There is
> no trace of the echo and the conversation is still full duplex.  And,
> the box works perfectly with asterisk.  Unfortunately, the retail
> price on these boxes is $3k.
> 
> Just thought I'd share my experience...
> 
Theat's great.  I, too, had the same problem with Echo.  I got sick of
hearing about it, so we purchased a T1 Echo Can (@ recommendation of TC)
that sits between the CB and T100P.

Was pretty easy to setup too, and cost $800 all said and done (power
Supply, Chasis, and Echo Can Cards.)

- B