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Error when trying to activate software echo cancellers in DAHDI for TDM400P card

I just upgraded to Asterisk 1.4.24 and had some echo issues that were not there with 1.4.20.  Reading further I found that I need to edit the system.conf file to add software echo cancellers mg2, kb1, sec2, and sec.  However, when running the DAHDI config script, I get this error:

DAHDI_ATTACH_ECHOCAN failed on channel 1: Invalid argument (22)

Does that mean the echo cancellers were not compiled with dahdi-tools or does my TDM400P card not support it with the wctdm driver?
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chrisvz94
Asked:
chrisvz94
2 Solutions
 
Kamran ArshadCommented:
Hi,

Please check the below discussion;

http://ibot.rikers.org/%23asterisk/20090320.html.gz
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chrisvz94Author Commented:
Digium was able to help me with the problem.  My kernel wasn't compiled correctly and not loading a module.  I had to add the dahdi_echocan_mg2 to my module loading process (the spot where I load wctdm).  Doing that and soucing dahdi_cfg fixed the problem.

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