[asterisk-bugs] [Asterisk 0014810]: channel-specific hangupcauses

[Asterisk Bug Tracker]

The following issue has been SUBMITTED. 
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http://bugs.digium.com/view.php?id=14810 
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Reported By:                fnordian
Assigned To:                
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Project:                    Asterisk
Issue ID:                   14810
Category:                   Core/Channels
Reproducibility:            always
Severity:                   feature
Priority:                   normal
Status:                     new
Asterisk Version:           SVN 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): 1.6.1 
SVN Revision (number only!): 185949 
Request Review:              
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Date Submitted:             2009-04-02 06:05 CDT
Last Modified:              2009-04-02 06:05 CDT
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Summary:                    channel-specific hangupcauses
Description: 
Hi,
regarding the discussion on asterisk-user
(http://lists.digium.com/pipermail/asterisk-users/2009-January/224721.html)
I want to suggest a solution for this problem.

At the moment, channels store their general asterisk hangupcause in the
channel which is hung up. Let's store some more channel-specific data about
the cause in there, too. The connected channel could then get the
information from the channel and make it available to the dialplan and it's
own hangup-routine.

My implementation uses two channel-variables to store the cause:
HANGUP_TECH and *_CAUSE, where *_CAUSE is compounded of the value of
HANGUP_TECH + '_CAUSE'. E.g. HANGUP_TECH=SIP, SIP_CAUSE=404 not found.

Currently app_dial takes care of propagating the hangupcause. In the case
of multiple channels with different causes, it chooses one of them using a
priority-scheme. This mechanism is enhanced by handling the HANGUP_TECH +
*_CAUSE variables to achieve that these are passed to the calling channel.

Please find my implementation attached as a patch. It's still proof of
concept but seems to work ;-)
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Issue History 
Date Modified    Username       Field                    Change               
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2009-04-02 06:05 fnordian       New Issue                                    
2009-04-02 06:05 fnordian       Asterisk Version          => SVN             
2009-04-02 06:05 fnordian       Regression                => No              
2009-04-02 06:05 fnordian       SVN Branch (only for SVN checkouts, not tarball
releases) => 1.6.1           
2009-04-02 06:05 fnordian       SVN Revision (number only!) => 185949          
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