[asterisk-bugs] [Asterisk 0019022]: Very loud crackling noise or no audio on ISDN channel

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
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https://issues.asterisk.org/view.php?id=19022 
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Reported By:                ibis
Assigned To:                
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Project:                    Asterisk
Issue ID:                   19022
Category:                   Channels/chan_dahdi
Reproducibility:            random
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           1.6.2.17.2 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2011-03-24 10:46 CDT
Last Modified:              2011-03-24 10:46 CDT
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Summary:                    Very loud crackling noise or no audio on ISDN
channel
Description: 
Occasionally there is either a very loud crackling noise or hum and the
voice transmission is distorted or the call is one sided. This is only
heard by the person on the SIP phone whilst the person on the other side
does not hear anything noise. The dahdi hardware consists of 2 cards (2
port ISDN TE210P) and TDM800P but this problem is only occurring on the
TE210P.

I also tried to force the codec to Alaw since the isdn in europe is alaw
to avoid any transcoding but it did not make a difference. If you would
like, I even have a recording of the hum may be it may be useful

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Issue History 
Date Modified    Username       Field                    Change               
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2011-03-24 10:46 ibis           New Issue                                    
2011-03-24 10:46 ibis           Asterisk Version          => 1.6.2.17.2      
2011-03-24 10:46 ibis           Regression                => No              
2011-03-24 10:46 ibis           SVN Branch (only for SVN checkouts, not tarball
releases) => N/A             
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