[asterisk-bugs] [Zaptel 0012263]: DTMF tones in crossover cable loopback environment cause kernel dump

[noreply at bugs.digium.com]

The following issue has been SUBMITTED. 
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http://bugs.digium.com/view.php?id=12263 
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Reported By:                craig
Assigned To:                
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Project:                    Zaptel
Issue ID:                   12263
Category:                   zaptel (the module)
Reproducibility:            always
Severity:                   crash
Priority:                   normal
Status:                     new
Zaptel Version:             1.4.9.2 
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:             03-20-2008 02:25 CDT
Last Modified:              03-20-2008 02:25 CDT
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Summary:                    DTMF tones in crossover cable loopback environment
cause kernel dump
Description: 
TE405 or TE410 with E1 spans 1 and 2 cross connected via ISDN crossover
cable.  Asterisk 1.4.18, Zaptel 1.4.9.2, libpri 1.4.3.  OS Centos 5 with
default kernel 2.6.18-53.el5.  Span 1 configured as pri_net, span 2 as
pri_cpe.

Call originates from SIP handset attached to server, call dials out span 1
and comes back via span 2 into an IVR.  The pressing of a keypad button
(DTMF) causes immediate kernel dump.  The generation of DTMF can occur at
any time (whilst the call is still Ringing, during Wait, or after
answering).  Taking the spans out of the call path removes the problem.

Kernel dump mentions 'zt_chan_read ... [zaptel]'  Server must be power
cycled to recover.
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Issue History 
Date Modified   Username       Field                    Change               
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03-20-08 02:26  craig          Zaptel Version            => 1.4.9.2         
03-20-08 02:26  craig          SVN Branch (only for SVN checkou => N/A          
  
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