[asterisk-bugs] [Asterisk 0014105]: Dahdi 2.1.0 causes HDLC Bad FCS (8) and Primary D-Channel on span 2 down

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=14105 
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Reported By:                kebl0155
Assigned To:                
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Project:                    Asterisk
Issue ID:                   14105
Category:                   Channels/chan_dahdi
Reproducibility:            random
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           1.6.0.1 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             2008-12-18 04:35 CST
Last Modified:              2008-12-18 12:30 CST
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Summary:                    Dahdi 2.1.0 causes HDLC Bad FCS (8) and Primary
D-Channel on span 2 down
Description: 
With one of our customers, with Dahdi 2.0.0, every day we see typically
between 50 and 80 messages of the type:

chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on Primary D-channel of span
2

These don't normally result in the span going down, so that's not so
serious.

We tried upgrading them to Dahdi 2.1.0, and got *1400* of these messages
over the course of the day.  The span went down 52 times over the course of
that day.

I reverted them back to 2.0.0 and things seem back to normal.
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 (0096637) sruffell (administrator) - 2008-12-18 12:30
 http://bugs.digium.com/view.php?id=14105#c96637 
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kebl0155, could you contact Digium customer support about this.  They will
be able to collect some information and triage your system in order to
troubleshoot this.  That being said, I'm surprised by this report since
there haven't been any changes to DAHDI between 2.0.0 and 2.1.0 in this
area.  My best guess is that there is something that is just barely
marginal in your original setup, so it would be worth working with them to
troubleshoot the source of the errors on DAHDI 2.0.0. 

Issue History 
Date Modified    Username       Field                    Change               
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2008-12-18 12:30 sruffell       Note Added: 0096637                          
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