[asterisk-bugs] [LibPRI 0017360]: [patch] 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:              2010-09-04 12:41 CDT
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Summary:                    [patch] 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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 (0126605) shawkris (reporter) - 2010-09-04 12:41
 https://issues.asterisk.org/view.php?id=17360#c126605 
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I have applied the patch 1.4.11.4 and been running with with Asterisk
1.4.35 for the past few days. I haven't seen any line drops like I
previously saw, although I will keep testing.

I don't know if it's because of the patch, or just because I've got
debugging turned on, but I am seeing some protocol errors that look like
messages are bunching up. Perhaps it is just timing coincidences of user
hangups etc. I've seen a few of these. The PBX recovers OK without dropping
the pri and just increments a protocol error counter.

This is an summarised trace between the PBX and Asterisk.

[Sep  4 13:01:30] VERBOSE[16600] logger.c: > Message Type: SETUP (5)
[Sep  4 13:01:30] VERBOSE[12600] logger.c: < Message Type: ALERTING (1)
[Sep  4 13:01:52] VERBOSE[16600] logger.c: > Message Type: DISCONNECT
(69)
[Sep  4 13:01:52] VERBOSE[12600] logger.c: < Message Type: CONNECT (7)
[Sep  4 13:01:52] VERBOSE[12600] logger.c: > Message Type: CONNECT
ACKNOWLEDGE (15)
[Sep  4 13:01:52] VERBOSE[12600] logger.c: < Message Type: RELEASE (77)
[Sep  4 13:01:52] VERBOSE[12600] logger.c: > Message Type: RELEASE
COMPLETE (90)

[Sep  4 13:01:52] VERBOSE[12600] logger.c: < Message Type: STATUS (125)
[Sep  4 13:01:52] VERBOSE[12600] logger.c: < Cause (len= 5) [ Ext: 1 
Coding: CCITT (ITU) standard (0)  Spare: 0  Location: Private network
serving the local user (1)
[Sep  4 13:01:52] VERBOSE[12600] logger.c: <                  Ext: 1 
Cause: Message not compatible with call state (101), class = Protocol Error
(e.g. unknown message) (6) ]
[Sep  4 13:01:52] VERBOSE[12600] logger.c: < Cause data 1: 0f (15, CONNECT
ACKNOWLEDGE message)

[Sep  4 13:01:52] VERBOSE[12600] logger.c: > Message Type: RELEASE
COMPLETE (90) 

Issue History 
Date Modified    Username       Field                    Change               
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2010-09-04 12:41 shawkris       Note Added: 0126605                          
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