[asterisk-bugs] [Asterisk 0016647]: [patch] Session failure with specific SDP-Content (one media specific c= line, no session specific c= line)

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=16647 
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Reported By:                kwemheuer
Assigned To:                
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Project:                    Asterisk
Issue ID:                   16647
Category:                   Channels/chan_sip/T.38
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.29 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases):  1.4  
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2010-01-19 07:48 CST
Last Modified:              2010-01-19 07:57 CST
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Summary:                    [patch] Session failure with specific SDP-Content
(one media specific c= line, no session specific c= line)
Description: 
I try to setup a fax call with provider sipcall.ch. The provider equipment
(CISCO according to SIP-message) sends back a T38 ReINVITE. This ReINVITE
contains a sdp-message with no c= line in front of the first m= line. But
there was a media specifc c= line later in SDP.
In this case asterisk shows a warning "Insufficient information in SDP"
and quits the reinvite with "488 not applicable here".
As far as I understand the RFCs asterisk should handle this case (As it
did in 1.4.26.2)
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 (0116892) kwemheuer (reporter) - 2010-01-19 07:57
 https://issues.asterisk.org/view.php?id=16647#c116892 
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The attached patch (patch.txt) fixes the issue. 

Issue History 
Date Modified    Username       Field                    Change               
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2010-01-19 07:57 kwemheuer      Note Added: 0116892                          
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