[asterisk-bugs] [Asterisk 0016497]: [patch] [regression] T.38 no longer functions

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=16497 
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Reported By:                globalnetinc
Assigned To:                mnicholson
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Project:                    Asterisk
Issue ID:                   16497
Category:                   Channels/chan_sip/T.38
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     closed
Target Version:             1.6.1.14
Asterisk Version:           1.6.1.12 
JIRA:                       SWP-603 
Regression:                 Yes 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
Resolution:                 fixed
Fixed in Version:           
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Date Submitted:             2009-12-21 19:59 CST
Last Modified:              2010-01-14 10:19 CST
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Summary:                    [patch] [regression] T.38 no longer functions
Description: 
After upgrade from 1.6.11 to 1.6.1.12 T.38 no longer functions.

WARNING[26670] udptl.c: (SIP/4065877430): UDPTL asked to send 1 bytes of
IFP when far end only prepared to accept 0 bytes; data loss will occur.You
may need to override the T38FaxMaxDatagram value for this endpoint in the
channel driver configuration.

This is generated even though sip.conf has
t38pt_udptl=yes,redundancy,maxdatagram=176

After returning to 1.6.1.11 T.38 functions correctly.
 
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---------------------------------------------------------------------- 
 (0116682) svnbot (reporter) - 2010-01-14 10:19
 https://issues.asterisk.org/view.php?id=16497#c116682 
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Repository: asterisk
Revision: 240092

_U  branches/1.6.0/
U   branches/1.6.0/main/udptl.c

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r240092 | mnicholson | 2010-01-14 10:19:42 -0600 (Thu, 14 Jan 2010) | 15
lines

Merged revisions 240078 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/trunk

........
  r240078 | mnicholson | 2010-01-14 10:14:35 -0600 (Thu, 14 Jan 2010) | 9
lines
  
  This change fixes a few bugs in the way the far max IFP was calculated
that were introduced in r231692.
  
  (closes issue https://issues.asterisk.org/view.php?id=16497)
  Reported by: globalnetinc
  Patches:
        udptl-max-ifp-fix1.diff uploaded by mnicholson (license 96)
  Tested by: globalnetinc
........

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http://svn.digium.com/view/asterisk?view=rev&revision=240092 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2010-01-14 10:19 svnbot         Checkin                                      
2010-01-14 10:19 svnbot         Note Added: 0116682                          
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