[asterisk-bugs] [Asterisk 0014849]: [patch] SendFax function not working as expected on > 1.6.0.7

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=14849 
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Reported By:                afosorio
Assigned To:                kpfleming
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Project:                    Asterisk
Issue ID:                   14849
Category:                   Channels/chan_sip/T.38
Reproducibility:            always
Severity:                   block
Priority:                   normal
Status:                     assigned
Target Version:             1.6.0.12
Asterisk Version:           1.6.0.7 
Regression:                 Yes 
SVN Branch (only for SVN checkouts, not tarball releases): 1.6.0 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-04-07 15:51 CDT
Last Modified:              2009-07-09 16:20 CDT
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Summary:                    [patch] SendFax function not working as expected on
> 1.6.0.7
Description: 
When trying to send a fax via callfile using T.38 in asterisk version
1.6.0.5 it works fine, but after upgrading to asterisk 1.6.0.7 or newer it
does not work. When receiving re-INVITE from media gateway (Cisco AS-5400)
Asterisk ends call answering 488 Not acceptable here. I am running Asterisk
under Debian kernel 2.6.18-6-686. I am attaching captures both for scenario
which works and scenario which does not work. 
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 (0107526) svnbot (reporter) - 2009-07-09 16:20
 https://issues.asterisk.org/view.php?id=14849#c107526 
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Repository: asterisk
Revision: 205696

U   trunk/apps/app_fax.c
U   trunk/channels/chan_sip.c
U   trunk/include/asterisk/frame.h

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r205696 | kpfleming | 2009-07-09 16:20:24 -0500 (Thu, 09 Jul 2009) | 16
lines

Repair ability of SendFAX/ReceiveFAX to respond to T.38 switchover.

Recent changes in T.38 negotiation in Asterisk caused these applications
to
not respond when the other endpoint initiated a switchover to T.38; this
resulted in the T.38 switchover failing, and the FAX attempt to be made
using an audio connection, instead of T.38 (which would usually cause the
FAX to fail completely).

This patch corrects this problem, and the applications will now correctly
respond to the T.38 switchover request. In addition, the response will
include
the appopriate T.38 session parameters based on what the other end offered
and what our end is capable of.

(closes issue https://issues.asterisk.org/view.php?id=14849)
Reported by: afosorio

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http://svn.digium.com/view/asterisk?view=rev&revision=205696 

Issue History 
Date Modified    Username       Field                    Change               
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2009-07-09 16:20 svnbot         Checkin                                      
2009-07-09 16:20 svnbot         Note Added: 0107526                          
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