[asterisk-bugs] [Asterisk 0019195]: [patch] When SIP caller does not offer video, adding video drops the call

[Asterisk Bug Tracker]

The following issue has been UPDATED. 
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https://issues.asterisk.org/view.php?id=19195 
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Reported By:                one47
Assigned To:                
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Project:                    Asterisk
Issue ID:                   19195
Category:                   Channels/chan_sip/CodecHandling
Reproducibility:            always
Severity:                   minor
Priority:                   normal
Status:                     new
Asterisk Version:           1.6.2.18 
JIRA:                        
Regression:                 No 
Reviewboard Link:            
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2011-04-28 06:34 CDT
Last Modified:              2011-04-28 06:36 CDT
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Summary:                    [patch] When SIP caller does not offer video, adding
video drops the call
Description: 
2 video capable SIP devices on the same LAN (directmedia enabled)

Caller sends an initial INVITE, but does NOT include any video, then no
video-rtp object is initialised. Video is still offered to the callee, as
they are capable of it.

If the callee then requests video, then the attempt to enable direct media
causes the call to be dropped as the SDP data gets very confused by having
video requested, but no video-rtp object at the same time.
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Issue History 
Date Modified    Username       Field                    Change               
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2011-04-28 06:36 one47          Summary                  When SIP caller does
not offer video, adding video drops the call => [patch] When SIP caller does not
offer video, adding video drops the call
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