[asterisk-bugs] [Asterisk 0014849]: 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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http://bugs.digium.com/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:                   feature
Priority:                   normal
Status:                     new
Asterisk Version:           1.6.0.7 
Regression:                 No 
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:              2009-05-02 17:42 CDT
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Summary:                    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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 (0104063) vrban (reporter) - 2009-05-02 17:42
 http://bugs.digium.com/view.php?id=14849#c104063 
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hi, i made a patch for myself that fix this issue by doing a hard coded
SipT38SwitchOver in app_fax. whatever we detect a faxtone or not. (because
it never detect a fax tone, cant say why) And my opinion is, that if we
call the ReceiveFAX application from a SIP channel, i dont see any reason
why a SipT38SwitchOver should not be hard coded?

Waiting to detect a fax tone can fail for a variety of reasons, e.g.
narrow band codec. While sending a re-invite to offer T.38 is a most normal
thing if we get a call to the ReceiveFAX application.

agreement/disagreement ? 

Issue History 
Date Modified    Username       Field                    Change               
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2009-05-02 17:42 vrban          Note Added: 0104063                          
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