[asterisk-bugs] [JIRA] (DAHLIN-98) DAHDI_ATTACH_ECHOCAN failed on channel 1: Invalid argument(22) on Gentoo

[Mc GRATH Ricardo (JIRA)]

    [ https://issues.asterisk.org/jira/browse/DAHLIN-98?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=211071#comment-211071 ] 

Mc GRATH Ricardo commented on DAHLIN-98:
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As these  issue is already closed, but if could help about my experiences  and how it seems could be solved.

I have installed TE122 E1 card configured for E1 MFCR2 mode, with  Elastix-2.4.0-RC2-i386-bin-12Dec2012.
When system start up the following message error "DAHDI_ATTACH_ECHOCAN failed on channel 1: Invalid argument (22)"
By searching with google engine I found similar case with many recommendation, I have tried without solved, so I have tried by my self and found problem it becomes from transcription of the following line on System.conf ;

echocanceller=oslec - inactive,1-15
echocanceller=oslec - inactive,17-31

if changed to the following problem it solved 

echocanceller=oslec - inactive 1-15
echocanceller=oslec - inactive 17-31
                
> DAHDI_ATTACH_ECHOCAN failed on channel 1: Invalid argument(22) on Gentoo
> ------------------------------------------------------------------------
>
>                 Key: DAHLIN-98
>                 URL: https://issues.asterisk.org/jira/browse/DAHLIN-98
>             Project: DAHDI-Linux
>          Issue Type: Bug
>          Components: dahdi (the module)
>    Affects Versions: 2.1.0.4
>            Reporter: Shaun Ruffell
>            Severity: Trivial
>
> On Gentoo, it appears that the kernel is not configured to allow auto loading of modules.  This prevents the DAHDI_ATTACH_ECHOCAN from loading the software echo canceler requested in the /etc/dahdi/system.conf file, and the result is an error like:
> "DAHDI_ATTACH_ECHOCAN failed on channel 1: Invalid argument(22)" 
> To work around this the "dahdi_echocan_<name of echocan>" could be added to /etc/dahdi/modules
> I.e.  If you have mg2 configured as the echo canceler in /etc/dahdi/system.conf, add the line "dahdi_echocan_mg2" to /etc/dahdi/modules.

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