[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:                
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Project:                    Asterisk
Issue ID:                   14849
Category:                   Channels/chan_sip/T.38
Reproducibility:            always
Severity:                   block
Priority:                   normal
Status:                     new
Target Version:             1.6.0.10
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:              2009-05-30 04:02 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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 (0105783) andrew (reporter) - 2009-05-30 04:02
 https://issues.asterisk.org/view.php?id=14849#c105783 
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With the patch I get an error at the end of the fax, but it works. It might
just be the end of call hangup being reported as an error. I'm using a
Cisco AS5300 gateway and PRI (send and receive).

If T38 is not enabled correctly in sip.conf, but supported I will get the
following error: "Audio loop reports T38 switchover but t38state !=
T38_STATE_NEGOTIATED". It should use the audio codec rather than fail. 

Issue History 
Date Modified    Username       Field                    Change               
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2009-05-30 04:02 andrew         Note Added: 0105783                          
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