[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. 
====================================================================== 
https://issues.asterisk.org/view.php?id=14849 
====================================================================== 
Reported By:                afosorio
Assigned To:                
====================================================================== 
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:              
====================================================================== 
Date Submitted:             2009-04-07 15:51 CDT
Last Modified:              2009-05-30 02:35 CDT
====================================================================== 
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. 
====================================================================== 

---------------------------------------------------------------------- 
 (0105780) Ivan (reporter) - 2009-05-30 02:35
 https://issues.asterisk.org/view.php?id=14849#c105780 
---------------------------------------------------------------------- 
hi! I looking for bug in t38 switching procedure when ReceiveFax
process(1.6.1.0 release). It occurs when remote peer switchs media in t38
in the case of V.21 Preamble has detected or if softphone itself switch in
t38 without CNG. Seems like it is the same problem. 

Issue History 
Date Modified    Username       Field                    Change               
====================================================================== 
2009-05-30 02:35 Ivan           Note Added: 0105780                          
======================================================================