Echo Cancellation

Hey Everyone,
I’m new to this forum, but not to asterisk. I have a medium sized installation at the radio station I work at that works flawlessly. What’s interesting is that no echo cancellation tweaking was necessary for that asterisk box. Considering I’m using two X100p’s there, I thought I would have at least a little bit of tweaking to do. I am trying to do a similar setup here at home, however, despite my greatest efforts I cannot get rid of the echo. I have done the milliwatt tests from the local telco, and tweaked the RX gain as such. I have echocancel and echotraining on in zapata.conf, and have tried everything I have found on the internet so far. I even bought another X100P to make sure my card wasn’t faulty, and no such luck. I would save my pennies and buy an analog Digum TDM… card, but it bothers me the X100P’s work so well at the other installation. Any thoughts? Thanks in advance,

Brooks

voip-info.org/wiki-Asterisk+ … hotraining