> In an email earlier today, a response indicated that there are no plans or
> roadmap to create additional dissectors. Is there a community of developers
> (as distinct from users) to whom this request can be passed?
The Ethereal developers are likely to be found on
"ethereal-dev@xxxxxxxxxxxx"; note, though, that there is no guarantee
that the request will be satisfied within any given time frame.
There does exist support for H.323 for Ethereal, with a modified version
of Ethereal; see
http://voice2sniff.org/
However:
1) for licensing reasons, that's not part of the standard
Ethereal distribution (it uses some MPLed code, and there may
be some reason why that can't be included in the GPLed
Ethereal source base - there was a discussion of this, ages
ago, in some Ethereal mailing list, probably ethereal-dev,
but I don't remember the outcome, and it's not my dissector
or issue so don't send mail only to me discussing that);
2) it yet doesn't work on any platform other than Windows - to
quote the page:
The executable that can be downloaded from this page is
capable of decoding H.323 (Voice over IP standard)
messages. Unfortunately, due to linking problems,
currently I can't get it to work on Linux or any other
*nix.
(Note that "I" in that paragraph refers to the author of the
dissection code, Andreas Sikkema, not to me.)
> If not, what tools or resources are available with or for ethereal so that
> the work could be done here?
If you want to see if you can make it link on non-Windows platforms, get
the Ethereal source code and the H.323 dissector source code, and give
it a try. The source code itself, and the files in the "doc"
subdirectory of the Ethereal source tree, are pretty much all the tools
and resources there are.