https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5220
Summary: Wrong SDP interpretation on VoIP call flow chart
Product: Wireshark
Version: 1.4.0
Platform: x86
OS/Version: Windows XP
Status: NEW
Severity: Normal
Priority: Low
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: somsom.great@xxxxxxxxx
Build Information:
Version 1.4.0 (SVN Rev 34005 from /trunk-1.4)
Bug also present in 1.2.x series.
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Open attachment 4409
(https://bugs.wireshark.org/bugzilla/attachment.cgi?id=4409) of bug 4586
(https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4586). Click on
Telephony/VoIP Calls/Flow.
SDP answer of 1st reINVITE is decoded as "200 OK SDP ( t38 g711A )". That is
incorrect, as audio media, which seemingly contains g711A is deleted. Therefore
g711A should not be shown, at all.
Deleting a media is defined in RFC3264, it is actually done by setting port
number of media to zero.
The log I refer to is about a D-Link box. In real life I encountered the same
issue using products of several other vendors. I just did not want to attach
another log, when an existing one is sufficient.
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