[asterisk-users] Echo problem

[Michael L. Young]

> We followed these instructions in trying to eliminate echo:

 
>http://www.asteriskdocs.org/modules/tinycontent/content/docbook/current/doc
>s-html/x1695.html

>Our lines come in from the telco in a PRI, then connect to a Tadiran
>switch which hands the lines off to Asterisk over a T1 card.

Checkout the Digium KB: http://kb.digium.com/19/

You will see a suggestion to adjust the gain levels as well.  Even though
the echo is there, it helps to not make it noticeable to the users.

I just found this as well, although they are trying to sell their product at
the same time, it helps explain echo and some steps in Asterisk for reducing
echo: http://www.xorcom.com/pdfs/AB007_Echo.pdf

Michael L. Young