[asterisk-bugs] [LibPRI 0017360]: LibPRI problem with restart of PBX processor (Testing SVN 1688)

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=17360 
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Reported By:                shawkris
Assigned To:                rmudgett
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Project:                    LibPRI
Issue ID:                   17360
Category:                   General
Reproducibility:            have not tried
Severity:                   minor
Priority:                   normal
Status:                     assigned
Asterisk Version:           1.4.30 
JIRA:                       SWP-1680 
libpri Version:             I did not set the version. :( 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!): 1688 
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             2010-05-19 07:57 CDT
Last Modified:              2010-08-31 12:20 CDT
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Summary:                    LibPRI problem with restart of PBX processor
(Testing SVN 1688)
Description: 
Asterisk is connected to legacy Siemens PBX. PBX has dual CPU and switches
over active/passive processors at (or close to) 00:00.

During the switchover, the link stays up but the PBX sends SABME. Asterisk
should clear state to restart q921. A few seconds after the first call
comes in, we see the legacy PBX drops the link and tries to re-establish -
it normally does this after a protocol error (timer expiry etc).

I will try and reproduce with pri debugging enabled.
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 (0126478) shawkris (reporter) - 2010-08-31 12:20
 https://issues.asterisk.org/view.php?id=17360#c126478 
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I've done some more testing with the latest SVN of LibPRI
(SVN-branch-1.4-r1929 I think) and Asterisk 1.4.35. Although it ran OK with
our PBX out of hours, it soon failed again once the call traffic increased.
I can't see from the log which message caused the PBX to drop the link.

When the link came up, it looks like LibPRI tried to resend a message that
perhaps it shouldn't after a SABME, with the wrong N(S). 

Issue History 
Date Modified    Username       Field                    Change               
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2010-08-31 12:20 shawkris       Note Added: 0126478                          
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