[asterisk-bugs] [Asterisk 0015586]: [patch] Failure to negotiate T.38

Asterisk Bug Tracker noreply at bugs.digium.com
Thu Oct 1 16:23:54 CDT 2009


A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=15586 
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Reported By:                globalnetinc
Assigned To:                kpfleming
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Project:                    Asterisk
Issue ID:                   15586
Category:                   Channels/chan_sip/T.38
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     assigned
Asterisk Version:           SVN 
JIRA:                        
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:             2009-07-26 15:57 CDT
Last Modified:              2009-10-01 16:23 CDT
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Summary:                    [patch] Failure to negotiate T.38
Description: 
To implement T.38 on most ATAs their is a reinvite required.  In the
process of gatewaying the T.38 negotiations the Asterisk server is not
doing this correctly.  On versions past 1.6.0.10 it does not even send the
same ports on the RTP streams to both parties.  

Every version past 1.6.0.10 fails
1.6.0.11
1.6.1.0
1.6.1.1
1.6.2.0-rc

This also includes the new T.38 stack that is is being introduced. in the
SVN tree of 1.6.1.1 and 1.6.2.0
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Relationships       ID      Summary
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has duplicate       0015886 T38 udptl.c bufferoverflow
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---------------------------------------------------------------------- 
 (0111757) kpfleming (administrator) - 2009-10-01 16:23
 https://issues.asterisk.org/view.php?id=15586#c111757 
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I'm not sure what you are providing me; I don't need a FAX trace from
1.6.0.15, as we know it will fail in your configuration. The patch I
supplied will allow you to override the bogus T38FaxMaxDatagram value that
the media gateway is sending you without having to edit any code.

Yes, the SVN 1.6.0 branch was broken, but should now be fixed. If it is
not fixed, is there any chance you get on IRC (#asterisk-dev on FreeNode)
so we can talk about this in realtime? 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-10-01 16:23 kpfleming      Note Added: 0111757                          
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