[asterisk-bugs] [DAHDI-linux 0018463]: Kernel Panic when Hanging up call using FXS connected phone

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=18463 
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Reported By:                alecdavis
Assigned To:                
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Project:                    DAHDI-linux
Issue ID:                   18463
Category:                   dahdi (the module)
Reproducibility:            always
Severity:                   crash
Priority:                   high
Status:                     feedback
JIRA:                       DAHDI-775 
Reviewboard Link:            
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Date Submitted:             2010-12-12 00:10 CST
Last Modified:              2010-12-15 00:10 CST
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Summary:                    Kernel Panic when Hanging up call using FXS
connected phone
Description: 
Since dahdi-linux -r9524 panic occurs, and warning below.

Since dahdi-linux -r9521, the warning below each time we make a call, and
echo is there, very short delay, but is very noticeable.

"[2010-12-12 19:02:15.600188] WARNING[19536]: chan_dahdi.c:4791
dahdi_train_ec: Unable to request echo training on channel 36: Invalid     
          argument

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 (0129605) alecdavis (manager) - 2010-12-15 00:10
 https://issues.asterisk.org/view.php?id=18463#c129605 
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unable to panic as previously, this problem seems to be resolved.

also added as suggested in system.conf<pre>
span=1,0,0,ccs,hdb3,crc4 #;esf,b8zs
bchan=1-15,17-31 # set this to 1-15,17-31 for E1
dchan=16 # set this to 16 for E1

fxols=32-35
fxsls=36-37
#echocanceller=hwec,1-15,17-31
echocanceller=hwec,32-37
</pre> 

Issue History 
Date Modified    Username       Field                    Change               
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2010-12-15 00:10 alecdavis      Note Added: 0129605                          
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