[Asterisk-Users] TDM04b and echo

[Matt Fredrickson]

On Wed, Aug 31, 2005 at 08:45:34PM -0500, chris gamble wrote:
> the echo isnt horrible most of the time, and seems extremely random in
> that i can call a number once without echo, then dial the same number a
> second time and get echo.
> 
> things i am currently considering (and would like to know if these might
> be useful)
> 1> upgrade from 1.09 ( asterisk at home ) to 1.2 cvs code base

That is worth a shot.  There are a few new echo-related features that have
been added:

1.) fxotune - try this first.  There is a file called README.fxotune that
explains how to use it.  It is primarily for doing echo related line tuning
(which in your case possibly won't help).

2.) Also, there is a new echo canceller in CVS-HEAD zaptel that has received a
lot of positive feedback.  Look in zconfig.h for ECHO_CAN_KB1 for further
information.

-- 
Matthew Fredrickson