[asterisk-bugs] [Asterisk 0014611]: [patch] SIP Attended Transfer fails

[Asterisk Bug Tracker]

The following issue requires your FEEDBACK. 
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http://bugs.digium.com/view.php?id=14611 
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Reported By:                klaus3000
Assigned To:                
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Project:                    Asterisk
Issue ID:                   14611
Category:                   Channels/chan_sip/Interoperability
Reproducibility:            have not tried
Severity:                   minor
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.4.23 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-03-05 11:10 CST
Last Modified:              2009-03-09 09:44 CDT
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Summary:                    [patch] SIP Attended Transfer fails
Description: 
Hi!
The attended trasfer fails in the following scenario:
PBX: Aterisk 1.4.23
Extensions: 1, 2 and 3

Extension 2 call extension 1. 
Extension 1 puts extension 2 on hold.
Extension 1 calls extension 3.
Extension 1 put extensions 3 on hold.
Extension 1 refers extension 3 to extension 2  

--> Asterisk sends NOTIFY with message/sipfrag:
  SIP/2.0 481 Call leg/transaction does not exist

and the transfer fails.

The failure happens only if the REFER is sent to extension 3. If
extensions 1 refers extension 2 to extension 3, then everything works
fine.

I have tested with recent SNOM and eyebeam clients - same result, transfer
does not work. 




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 (0101379) mmichelson (administrator) - 2009-03-09 09:44
 http://bugs.digium.com/view.php?id=14611#c101379 
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You haven't mentioned this explicitly, but does the failure only occur with
pedantic mode enabled? The patch you have submitted seems to only affect
processing with pedantic mode enabled.

By the way, I really like the patch, especially the citation of RFC 3891.
If you can confirm that the failure does not occur if you do not have
pedantic mode enabled, then I think this patch should go in as soon as
possible. Thanks! 

Issue History 
Date Modified    Username       Field                    Change               
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2009-03-09 09:44 mmichelson     Note Added: 0101379                          
2009-03-09 09:44 mmichelson     Status                   new => feedback     
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