[asterisk-bugs] [Asterisk 0014684]: Hangup cause 20 (subscriber absent), clearly an end user condition, is being used for unregistered trunks

[Asterisk Bug Tracker]

The following issue has been CLOSED 
====================================================================== 
https://issues.asterisk.org/view.php?id=14684 
====================================================================== 
Reported By:                davidw
Assigned To:                
====================================================================== 
Project:                    Asterisk
Issue ID:                   14684
Category:                   Channels/chan_sip/Interoperability
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     closed
Target Version:             1.6.0.12
Asterisk Version:           SVN 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
Resolution:                 suspended
Fixed in Version:           
====================================================================== 
Date Submitted:             2009-03-17 07:50 CDT
Last Modified:              2009-07-16 11:58 CDT
====================================================================== 
Summary:                    Hangup cause 20 (subscriber absent), clearly an end
user condition, is being used for unregistered trunks
Description: 
In a similar context to https://issues.asterisk.org/view.php?id=14683, calls to
trunks which are unavailable due
to a qualify failure are being given hangup cause 20 (subscriber absent). 
This is clearly intended to cover mobile subscribers currently off the
network, and unregistered SIP phones, which are not conditions that will
succumb to immediate retries over a different route.

3 (no route to destination) or 38 (network out of order) would seem more
appropriate for a trunk, although I think that would also require some
mechanism to distinguish trunks from leaf connnections.
======================================================================
Relationships       ID      Summary
----------------------------------------------------------------------
related to          0014683 Hangup cause 18 (no user response) is a...
====================================================================== 

---------------------------------------------------------------------- 
 (0107857) tilghman (administrator) - 2009-07-16 11:58
 https://issues.asterisk.org/view.php?id=14684#c107857 
---------------------------------------------------------------------- 
I agree with oej.  At this time, there is no change that we can make,
because there is insufficient distinguishment between the two types.  Given
future development, this might be possible, though, so I'm suspending this
issue. 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-07-16 11:58 tilghman       Note Added: 0107857                          
2009-07-16 11:58 tilghman       Status                   new => closed       
2009-07-16 11:58 tilghman       Resolution               open => suspended   
======================================================================