[Asterisk-Users] Echo Problem

[Jeb Campbell]

Brian M. Arlinghaus wrote:
> I've got mostly Cisco 7960s and a few Analog phones on TDM Ports.  On 
> the 7960s, the echo is quite bad. On the TDM ports, it is there, but not 
> as bad.  I have tried setting echo cancellation to various numbers, but 
> have had no luck.
> 
> This began after a HEAD version of * was installed. Since then, I 
> installed what I think is the latest stable version (Asterisk 
> CVS-v1-0-12/14/04-16:49:32) and the echo is still there.
> 
> A support guy at Digium said it was a SIP problem.

Just wanted to second this.  I have about 20 7940's, 2 7960, and a 4 
port FXS for fax machines going into a Bellsouth T1 (pri) and we get 
echo on some calls.  I turned on echotraining (not for the faxes of 
course -- echocancelwhenbridged=no) and it will train out, but I thought 
that voip -> pri could not have echo problems.

Anyway, please keep me updated if you figure out a (real) solution to this.

Jeb

-- 

Jeb Campbell
jebc at c4solutions.net