[asterisk-bugs] [LibPRI 0012899]: PRI link fails dropping all the active voice channels

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=12899 
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Reported By:                Christian_Pinedo
Assigned To:                mattf
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Project:                    LibPRI
Issue ID:                   12899
Category:                   General
Reproducibility:            random
Severity:                   major
Priority:                   normal
Status:                     assigned
Asterisk Version:           1.4.19 
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:             06-19-2008 11:24 CDT
Last Modified:              06-19-2008 11:43 CDT
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Summary:                    PRI link fails dropping all the active voice
channels
Description: 
Sometimes Asterisk resets D-Channel port of the PRI interface and all the
active communications fall down. This could take down until 30 voice
channels. We cann't identify when this happens. During a week we had no
problems but other weeks we have had errors all the days and several times
a week (i.e. one day 8 times).

[Jun 19 12:29:40] WARNING[14561] chan_zap.c: No D-channels available! 
Using Primary channel 16 as D-channel anyway!

The software realeases we are using:

* Asterisk 1.4.19
* Asterisk Addons 1.4.7
* LibPRI 1.4.4
* Zaptel 1.4.10.1

We are having this problems with Telefonica, a telco company from Spain.
We have being working with its technicians and they say that is the
asterisk which resets D-Channel and not the network.

We have reproduced this problem with two different PRI cards: TE110P and 
TE2XXP.  
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 elguero - 06-19-08 11:43  
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I was also having this issue running asterisk 1.4.19.

That is great that you got a debug from the telco.  My provider keeps
telling us that everything is clean on the line and won't provide any extra
info.

Can you try using a more recent version of asterisk?  I haven't had any
issues since upgrading to asterisk 1.4.20.  There were some (in my opinion
significant) fixes in that release to chan_zap, if my memory serves me
right.  Since then I haven't had a pri go down yet.

In my setup, I have 2 PRIs and found that when the one went down like
this, the other one followed as well.

I just thought I would comment on this to see if this helps track down if
this issued was fixed or not.

Just in case:

Zaptel 1.4.9.2 (had issues with 1.4.10.1 on centOS 5; looks like it was
fixed but not released yet)
Libpri 1.4.4
Asterisk 1.4.20

Hope this helps. 

Issue History 
Date Modified   Username       Field                    Change               
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06-19-08 11:43  elguero        Note Added: 0088941                          
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