[Asterisk-Users] Terrible echo with Te110P and Adit 600

[gw at adcomcorp.com]

Followup, I set a -2.0 gain from my asterisk t1 > pbx, and echo seems
mostly gone.

A note, I also turned on the aggressive suppressor in zconfig.h

Greg

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Gregory
Wiktor - ADCom Corp.
Sent: Saturday, October 22, 2005 11:07 AM
To: asterisk-users at lists.digium.com
Subject: RE: [Asterisk-Users] Terrible echo with Te110P and Adit 600

I have a similar setup... I set the canceller on the incoming PSTN
lines, but turn it off on the FXS.  

I have no local internal echo over the t1, but moderate over the PSTN.
I managed to tweak it a little and most of my  outbound (local side)
echo is minimized, but still there a little. I have no incoming echo.

You mind elaborating on where you are getting the echo? 

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Darren
Wright
Sent: Tuesday, October 18, 2005 10:42 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [Asterisk-Users] Terrible echo with Te110P and Adit 600


8 POTS lines - Adit 600 - TE110P - Dell Precision 530 Dual Xeon running
1.0.9 and 1.2 (tried both)


The echo is insurmountable.  I have tried everything, and the pots lines
are clean.  If I go from an FXO on the Adit 600 straight to an FXS, I
get no echo from an analog phone.  

I put an 128ms T1 echo canceller in between the adit and the TE110P, and
the echo was still horrible.  

I finally disabled the Zapata echo canceller....and WHAMMO!  It's
perfect now.  

The TE110P is on it's own IRQ...... and the machine has PLENTY of
horsepower.

Any ideas so I don't have to spend $1000 on an echo canceller?

-Darren




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