https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=2368
--- Comment #4 from LEGO <luis.ontanon@xxxxxxxxx> 2008-08-04 05:35:42 PDT ---
This is a hard one to get it fixed... RTP chooses the subdissector to use based
on what has been learnt by SDP.
The issue here is that here:
A frame containing SDP changes the subdissector to T.38, and there's no way
for SDP to know that the change was rejected in a later frame.
A mechanism needs to be engineered to allow SIP (and other RTP users) to inform
SDP/RDP that a given description was rejected so it has to go back to the prior
sub_dissector. (This is not easy to do at all).
I do not know which state was t38 at the time of Ethereal 0.10.6 but I guess it
was not there yet. So my guess is that the change of subdissector failed
because no subdissector for T38 is found (this needs to be verified).
\Lego
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