[Asterisk-Users] Echo Issues

[Callum McGillivray]

Hi all,

We have just installed a * server (CVS head) with a TE110P card and a 
IDSN20 line, we are using the GXP-2000 handsets running the latest 
firmware (.9).

Some of the calls we are receiving have echo at the our end (we can hear 
ourselves speak).

We have a traditional ISDN telephone system here as well and when I make 
a call from one of the handsets asterisk answers, directs the call to 
one of our representatives and the calls are completely clear, however 
when we receive calls from customers at home, we often hear a lot of 
echo (not all the time, just sometimes).

We have echo cancellation turned on and aren't really sure how we can 
get rid of this.

Can anyone offer any suggestions ?

Thanks,

Callum