[asterisk-bugs] [Asterisk 0017218]: All channels get Congestion following PTP MDL can't handle error of type F message

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=17218 
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Reported By:                kebl0155
Assigned To:                
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Project:                    Asterisk
Issue ID:                   17218
Category:                   Channels/chan_dahdi
Reproducibility:            random
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           SVN 
JIRA:                       SWP-1329 
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:             2010-04-21 03:47 CDT
Last Modified:              2010-04-27 12:37 CDT
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Summary:                    All channels get Congestion following PTP MDL can't
handle error of type F message
Description: 
Hi there,

We have a travel company in the UK experiencing unusually high call
volumes.

We upraded their asterisk to SVN versions of LibPri (1.4), Dahdi (2.3
branch) and Asterisk (1.6.1) in order to get a patch for another bug.

This morning the system fell over, with all dial attempts to their PBX
giving

Unable to create channel of type 'DAHDI' (cause 34 - Circuit/channel
congestion)

Asterisk had to be restarted to restore service.

This was immediately preceded by the following:

[Apr 21 09:03:14] ERROR[17042] chan_dahdi.c: PTP MDL can't handle error of
type F
[Apr 21 09:03:14] ERROR[17042] chan_dahdi.c: MDL-ERROR (F), SABME in state
7
[Apr 21 09:03:14] ERROR[17042] chan_dahdi.c: PTP MDL can't handle error of
type F
[Apr 21 09:03:14] ERROR[17042] chan_dahdi.c: MDL-ERROR (F), SABME in state
7

They're using a Digium TE205P.  No Alarms were thrown.

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---------------------------------------------------------------------- 
 (0121006) lmadsen (administrator) - 2010-04-27 12:37
 https://issues.asterisk.org/view.php?id=17218#c121006 
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In this case I'm going to refer you to Digium tech support as you have
purchased Digium hardware. This will allow you to get in contact with the
appropriate people to get this issue resolved. Thanks! 

Issue History 
Date Modified    Username       Field                    Change               
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2010-04-27 12:37 lmadsen        Note Added: 0121006                          
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