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Paul,
<p>I think we should define and use something like NULL CallID with all
zeros.
<p>- Logan
<br>
<p>"Paul E. Jones" wrote:
<blockquote TYPE=CITE><style></style>
<font face="Arial">Sasha,</font> <font face="Arial">The
problem with that is that the Facility message contains a call Identifier.
The only place this is currently used is in setting the <b>multipleCalls</b>
flag. I don't think that's an issue, even with security compromised.
We have to have something that makes the text in H.323v4 work-- right now
there's no way to send a Facility message to change the <b>multipleCalls
</b>flag.</font> <font face="Arial">As an alternative, we could specify
that the CallIdentifier will contain 16 zeros when sending non-call-related
messages, as opposed to using the <b>empty</b> choice.</font> <font face="Arial">What's
the group's preference?</font> <font face="Arial">Paul</font>
<blockquote dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<div style="FONT: 10pt arial">----- Original Message -----</div>
<div
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><b>From:</b>
<a href="mailto:sasha@tlv.radvision.com" title="sasha@tlv.radvision.com">Sasha
Ruditsky</a></div>
<div style="FONT: 10pt arial"><b>To:</b> <a href="mailto:paulej@PACKETIZER.COM" title="paulej@PACKETIZER.COM">Paul
E. Jones</a></div>
<div style="FONT: 10pt arial"><b>Cc:</b> <a href="mailto:ITU-SG16@mailbag.cps.intel.com" title="ITU-SG16@mailbag.cps.intel.com">ITU-SG16@mailbag.cps.intel.com</a></div>
<div style="FONT: 10pt arial"><b>Sent:</b> Sunday, December 10, 2000 8:23
AM</div>
<div style="FONT: 10pt arial"><b>Subject:</b> RE: Corrections to H.225.0v4
and H.323v4</div>
<span class=476355312-10122000><font face="Arial"><font color="#0000FF"><font size=-1>Hi
Paul</font></font></font></span><span
class=476355312-10122000></span><span
class=476355312-10122000><font face="Arial"><font color="#0000FF"><font size=-1>Everything
looks OK with me except the very 1st change.</font></font></font></span><span
class=476355312-10122000><font face="Arial"><font color="#0000FF"><font size=-1>Specifically
the empty <b>h323-message-body</b> element for non call related Q.931 messages.</font></font></font></span><span class=476355312-10122000><font face="Arial"><font color="#0000FF"><font size=-1>The
empty <b>h323-message-body</b> does not allow to add tokens to the FACILITY
message so it cannot be authenticated and its integrity cannot be checked.</font></font></font></span><span
class=476355312-10122000><font face="Arial"><font color="#0000FF"><font size=-1>My
proposal is to change wording here to allow non empty <b>h323-message-body</b>
in the case security is required</font></font></font></span><span
class=476355312-10122000></span><span
class=476355312-10122000></span><span
class=476355312-10122000><font face="Arial"><font color="#0000FF"><font size=-1>Sasha </font></font></font></span><span
class=476355312-10122000></span><span class=476355312-10122000></span><span class=476355312-10122000></span><span
class=476355312-10122000></span><span
class=476355312-10122000></span><span
class=476355312-10122000></span><font face="Tahoma"><font size=-1>-----Original
Message-----</font></font>
<br><font face="Tahoma"><font size=-1><b>From:</b> Paul E. Jones [<A HREF="mailto:paulej@PACKETIZER.COM">mailto:paulej@PACKETIZER.COM</A>]</font></font>
<br><font face="Tahoma"><font size=-1><b>Sent:</b> Saturday, December 09,
2000 12:06 AM</font></font>
<br><font face="Tahoma"><font size=-1><b>To:</b> ITU-SG16@mailbag.cps.intel.com</font></font>
<br><font face="Tahoma"><font size=-1><b>Subject:</b> Corrections to H.225.0v4
and H.323v4</font></font>
<br><font face="Tahoma"><font size=-1><b>Importance:</b> High</font></font>
<br>
<blockquote dir=ltr style="MARGIN-RIGHT: 0px"><font face="Arial">H.323
Experts,</font> <font face="Arial">I have attached a document that
contains the complete list of corrections for H.225.0v4 and H.323v4, with
differences against the decided text, that we have discussed on the mailing
list this past week.</font> <font face="Arial">I would like all interested
parties to review these changes.</font> <font face="Arial">I am open
to changing the wording, but I would like to get consensus on making these
changes. I have asked the TSB to see if we can make these corrections
prior to the publication of the documents. If so, I want to have
the support of everyone to make these corrections. I don't believe
that any of these issues should be contentious, but without these corrections,
I'm afraid that many more questions and interoperability problems will
arise.</font> <font face="Arial">If it turns out that we cannot update
the approved text before publication, I plan to submit this document (or
a modified version with comments I receive from you) to the next meeting
in March. Personally, I'd rather correct the Recommendation before
publication, rather than adding this to the Implementers Guide.</font> <font face="Arial">Thanks,</font><font face="Arial">Paul</font> </blockquote>
</blockquote>
</blockquote>
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