If you are experiencing echo or DTMF/Fax problems on your system using a card only when the hardware echo canceller is enabled, please follow the instructions below on how to capture an echo debug file.

The hardware echo canceller chip has a debug feature where a DEBUG Monitor will capture chip debug data during active calls. The captured debug binary file can be sent to Sangoma for further processing and analysis.

1. Install the latest WANPIPE release for Voice with echo debug option
   ./Setup install --echo-debug
    
2. Create wanpipe config files using config instructions
    
3. Start WANPIPE
    
4. Establish a call that has an echo problem or DTMF problem
    
5. Determine the call channel number:       
          #>wanpipemon -i w1g1 -c ehw
   
   
6. Run a echo canceler debug utility on that channel
          #>wan_ec_client wanpipe1 monitor <channel number>
   Where <channel number> is a channel number obtained in step 5.
    
7. After 2 minutes of talk and noticeable echo, or 30 seconds of bad DTMF.
    
8. Obtain the debug statistics using:
          #>wan_ec_client wanpipe1 monitor
   The wan_ec_client will write a binary file in your local directory.