[asterisk-bugs] [DAHDI-linux 0014995]: DAHDI_ATTACH_ECHOCAN failed on channel 1: Invalid argument(22)

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=14995 
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Reported By:                sruffell
Assigned To:                
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Project:                    DAHDI-linux
Issue ID:                   14995
Category:                   dahdi (the module)
Reproducibility:            always
Severity:                   text
Priority:                   normal
Status:                     acknowledged
JIRA:                        
Reviewboard Link:            
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Date Submitted:             2009-04-29 10:37 CDT
Last Modified:              2010-09-30 23:30 CDT
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Summary:                    DAHDI_ATTACH_ECHOCAN failed on channel 1: Invalid
argument(22)
Description: 
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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 (0127576) sruffell (administrator) - 2010-09-30 23:30
 https://issues.asterisk.org/view.php?id=14995#c127576 
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Starting at line 184 in the README [1] is a description on how to build
OSLEC.  You need to go through some extra steps if you want to use it since
it cannot be distributed along with the other DAHDI source currently.

[1]
http://svn.asterisk.org/view/dahdi/linux/trunk/README?revision=9308&view=markup 

Issue History 
Date Modified    Username       Field                    Change               
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2010-09-30 23:30 sruffell       Note Added: 0127576                          
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