On TD26 - Fast TCS and M/S negotiation in H.323v4

Paul Long Plong at SMITHMICRO.COM
Thu Jun 1 11:03:49 EDT 2000


Francois,

We should not be taking a poll as to whether something would break existing
implementations. What about vendors that we don't ask, that don't respond,
or are out of the loop for some reason? A standard is a contract of sorts.
Breaking contracts is a bad thing in part because future contracts cannot be
depended on.

Paul Long
Smith Micro Software, Inc.

-----Original Message-----
From: Francois Audet [mailto:audet at NORTELNETWORKS.COM]
Sent: Thursday, June 01, 2000 7:34 AM
To: ITU-SG16 at MAILBAG.INTEL.COM
Subject: Re: On TD26 - Fast TCS and M/S negotiation in H.323v4


I fully agree with Orit.

So far, I haven't heard of anybody that actually implemented clearing
the call
if both fastStart and h245Control are present in SETUP. I would argue,
it would
be a very bad implementation, regardless of what they interpreted the
spec
saying.

This being said, it seems that it will not create any interoperability
problems.
The *worst* case scenario (here again, I haven't heard of anybody that
actually implemented it that way) is that the call would proceed as fast

tunnelling (as per the spec) and ignore the fast start.

The benefits of doing the fastStart and the fast tunnelling at the same
time
far outweight the theoretical backward compatibility problems.

If anybody wants to revoke the Osaka agreement, contributions in
Portland are
welcomed. ;^)

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