[asterisk-bugs] [Asterisk 0009431]: Modify connection: Response 491 not handled according to RFC3261

[noreply at bugs.digium.com]

The following issue has been set as RELATED TO issue 0010481. 
====================================================================== 
http://bugs.digium.com/view.php?id=9431 
====================================================================== 
Reported By:                alex-911
Assigned To:                
====================================================================== 
Project:                    Asterisk
Issue ID:                   9431
Category:                   Channels/chan_sip/Interoperability
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     acknowledged
Asterisk Version:           1.4.2 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Disclaimer on File?:        No 
Request Review:              
====================================================================== 
Date Submitted:             03-30-2007 12:41 CDT
Last Modified:              11-15-2007 06:05 CST
====================================================================== 
Summary:                    Modify connection: Response 491 not handled
according to RFC3261
Description: 
when asterisk receives a reINVITE while a reINVITE from it's own is still
in progress, it answers with a 491 which is basically correct. but in the
RFC, there is a UAC behaviour described how a client should retry to modify
a connection. what asterisk is doing here is already providing call release
codes in the 491 and terminating the session with a BYE afterwards.
according to the RFC a timer should be fired at each client (times
depending who owns the call ID) and the modification should be retried.

find the log attached for a session modification from G.711 to T.38

======================================================================
Relationships       ID      Summary
----------------------------------------------------------------------
related to          0010481 SIP with canreinvite=yes through multip...
related to          0010868 1.4.11 Stable - Polycom phones hang up ...
====================================================================== 

Issue History 
Date Modified   Username       Field                    Change               
====================================================================== 
11-15-07 06:05  oej            Relationship added       related to 0010481  
======================================================================