are you able to received Fax? 
is sending fax the only problem? 
 
what do you have on chan_dahdi.conf?

 
  _____  

From: asterisk-users-boun...@lists.digium.com
[mailto:asterisk-users-boun...@lists.digium.com] On Behalf Of Agustina
Berretta
Sent: Tuesday, July 24, 2012 1:47 PM
To: asterisk-users@lists.digium.com
Subject: [asterisk-users] echo canceler query


Hello

I have a question regarding Asterisk echo cancellation.
I´m using a fax connected to an FXS interface and an E1 ISDN line to PSTN.
The issue I´m having is with sending fax through the E1 and I´m suspecting
is due to echo troubles as I have some echo issues in my E1 line.
How can I know if the echo canceller is being cancelled when fax tone is
detected?

Thanks!!!

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