Francois,
By default, I believe that editor would be me. This
annex was intended to work with H.323v2 systems and later, but you are correct
that there was no way to specify T.38 until H.245v4.
Of course, H.323v2 systems used H.245v3. H.323v3
systems used H.245v3 or higher (the key element). So, I suppose the
question is: is H.323v3 required? Surely not, as there are implementations
out there. We have argued about whether H.323v2 systems could use later
versions of H.245. The outcome was "no"-- perhaps that needs to be
revisited.
There have been recent changes to H.245 ASN.1 to support
T.38. At least there have been some proposed changes. Unfortunately,
I missed much of that discussion. The meeting report says that those
changes were added to H.245v6.
Mike, is it true that the T.38-related changes from
H.245v4 to H.245v6 were nothing more than additions to H.245-- not "changes",
per se. Also, did the proposed changes (from TD8/WP2, I believe) make it
into H.245v6?
As for Annex D, I am considering just pulling that into
the H.323 document, rather than keeping it as a separately published
annex-- does anybody object to that? That would certainly address
questions related to references going forward. However, we need to reach a
decision about the current publication. I suspect we need something for
the IG, but the problem is that H.323v2 is "old news" now. What to
do....
Paul
----- Original Message -----
Sent: Friday, February 25, 2000 1:55
PM
Subject: H.323 Annex D
Hi,
I'm not sure who is editor of
H.323 Annex D, but...
It seems that there is no
reference in Annex D of what version of H.323 and H.245 is required for the
procedures to work. There is no way to indicate T.38 or even support of
UDP vs. TCP transport in H.245v2.
I think the answer is that
H.245v4 or later is required. Perhaps somebody can clarify if this is correct.
In any case, we definitively
need to specify in H.323 Annex D which version of H.245 is
required...
-----
François Audet Tel:+1 408
565 5675 mailto:audet@NortelNetworks.com
Nortel Networks Fax:+1
408 565 2375 http://www.NortelNetworks.com