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<div class=Section1>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'>Orit,<o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'>You still do not hear what I am saying.<o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'>So I repeat, in order to have something for November;<o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<ul style='mso-margin-top-alt:0in' type=disc>
 <li class=MsoNormal style='color:black;mso-list:l0 level1 lfo2;tab-stops:list .5in'><span
     class=EmailStyle21><font size=2 color=black face=Arial><span
     style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial;
     color:black'>The H.323 URL is used as an H.323 alias.<span
     style="mso-spacerun: yes">  </span>The means that it has all of the properties
     of an H.323 alias, and nothing beyond these properties.<span
     style="mso-spacerun: yes">  </span>To expand this, this alias is used
     in ARQs LRQs, SETUP, etc. messages exactly the same as any other alias.<span
     style="mso-spacerun: yes">  </span>It is not used for any purpose
     beyond that for which all other aliases are used in H.323.<o:p></o:p></span></font></span></li>
</ul>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<ul style='mso-margin-top-alt:0in' type=disc>
 <li class=MsoNormal style='color:black;mso-list:l0 level1 lfo2;tab-stops:list .5in'><span
     class=EmailStyle21><font size=2 color=black face=Arial><span
     style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial;
     color:black'>There are no new functions, features, or capabilities added
     to H.323v4 based on the addition of the H.323 URL as a new alias type.<o:p></o:p></span></font></span></li>
</ul>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<ul style='mso-margin-top-alt:0in' type=disc>
 <li class=MsoNormal style='color:black;mso-list:l0 level1 lfo2;tab-stops:list .5in'><span
     class=EmailStyle21><font size=2 color=black face=Arial><span
     style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial;
     color:black'>Any other uses for the H.323 URL are for future study.<o:p></o:p></span></font></span></li>
</ul>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'>Can we agree to these statements for the H.323 URL in
H.323v4?<o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'>If we agree on this, can the URL format be formulated to
support these statements?<o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'>If the URL can be formulated, can it be submitted and
approved by IETF before November?<o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'>Bob<o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color=black
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial;color:black'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoAutoSig><!--[if supportFields]><span class=EmailStyle21><font 
size=2 color=olive face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:
12.0pt;font-family:Arial'><span style='mso-element:field-begin'></span><span 
style="mso-spacerun: yes"> </span>AUTOTEXTLIST \s "E-mail 
Signature" <span style='mso-element:field-separator'></span></span></font></span><![endif]--><font
color=olive><span style='color:olive'>------------------------------------------------------------------</span></font><font
color=olive><span style='color:olive;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoAutoSig><font size=3 color="#339966" face="Cló Gaelach (Twomey)"><span
style='font-size:12.0pt;font-family:"Cló Gaelach \(Twomey\)";color:#339966'>Robert
Callaghan<o:p></o:p></span></font></p>

<p class=MsoAutoSig><font size=1 color=olive face="Times New Roman"><span
style='font-size:8.0pt;mso-bidi-font-size:12.0pt;color:olive'>Siemens
Enterprise Networks</span></font><font size=1 color=olive><span
style='font-size:8.0pt;mso-bidi-font-size:12.0pt;color:olive;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoAutoSig><font size=1 color=olive face="Times New Roman"><span
style='font-size:8.0pt;mso-bidi-font-size:12.0pt;color:olive'>Tel:
+1.561.923.1756<span style='mso-tab-count:1'>              </span>Fax:
+1.561.923.1403</span></font><font size=1 color=olive><span style='font-size:
8.0pt;mso-bidi-font-size:12.0pt;color:olive;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoAutoSig><font size=1 color=olive face="Times New Roman"><span
style='font-size:8.0pt;mso-bidi-font-size:12.0pt;color:olive'>Email:<span
style='mso-tab-count:1'>      </span>Robert.Callaghan@ICN.Siemens.com</span></font><font
size=1 color=olive><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
color:olive;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoAutoSig><font size=3 color=olive face="Times New Roman"><span
style='font-size:12.0pt;color:olive'>------------------------------------------------------------------</span></font><font
color=olive><span style='color:olive;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal><!--[if supportFields]><span class=EmailStyle21><font 
size=2 color=olive face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:
12.0pt;font-family:Arial'><span style='mso-element:field-end'></span></span></font></span><![endif]--><span
class=EmailStyle21><font size=2 color=olive face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:black'>-----Original
Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> Orit Levin
[mailto:orit@radvision.com]<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, September 11, 2000
3:01 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Callaghan, Robert<br>
<b><span style='font-weight:bold'>Cc:</span></b> ITU-SG16@mailbag.cps.intel.com<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: Revised H.323 URL
document</span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>Bob!</span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>Below is
my take on the current situation.  </span></font><font size=2
color=black><span style='font-size:10.0pt;color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>The three of
us have the following different views on the possible use of the H.323
URL.</span></font><font size=2 color=black><span style='font-size:10.0pt;
color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>If I try to
map them into the H.323 "classic" picture of
EP1---GK1-------GK2---EP2 . The GKs are optional. If exist, they may contain BE
as well.</span></font><font size=2 color=black><span style='font-size:10.0pt;
color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>I understand
the following:</span></font><font size=2 color=black><span style='font-size:
10.0pt;color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'> </span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span lang=FR style='font-size:10.0pt;color:black;
mso-ansi-language:FR'>Bob:: indirect: EP1---GK1; direct: EP1 --------Zone2</span></font><font
size=2 color=black><span lang=FR style='font-size:10.0pt;color:black;
mso-color-alt:windowtext;mso-ansi-language:FR'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span lang=FR style='font-size:10.0pt;color:black;
mso-ansi-language:FR'>Paul:: indirect: Zone1-------GK2; direct: Zone1------EP2</span></font><font
size=2 color=black><span lang=FR style='font-size:10.0pt;color:black;
mso-color-alt:windowtext;mso-ansi-language:FR'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>Orit::
Zone1-------Zone2 (with H.225.0 Q.931, LRQ or Annex G) possible between them
for a specific call.</span></font><font size=2 color=black><span
style='font-size:10.0pt;color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'> </span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>We
"agree" that all of the scenarios should be allowed. </span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>"It
seems like" we disagree about the priority/emergency of
each of the applications above.</span></font><font size=2 color=black><span
style='font-size:10.0pt;color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>Saying that,
I don't like very much to define a solution based on the
"perceived priority" of the applications.</span></font><font size=2
color=black><span style='font-size:10.0pt;color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>My proposed
approach is, <u>above all</u>, guided by the fact, that <u>the DESTINATION is
the one to design its URL scheme, implement and, eventually, publish its
URL(s).</u></span></font><font size=2 color=black><span style='font-size:10.0pt;
color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'> </span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>The URL </span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>-   
has a key (I.e. the DNS domain) for IP resolution only</span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>-   
says what is the first H.323 protocol to contact this IP address, all the
scenarios above are addressed.</span></font><font size=2 color=black><span
style='font-size:10.0pt;color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'> </span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>If the DNS
portion (I.e. "host") is not present, it automatically means, that
the local (pre-configured or RAS discovered) gatekeeper will resolve the
"user" name (using RAS, Annex G, another DNS lookup, other means). It
is an exception, but it is still consistent with the approach above (The local
zone is responsible for the URL scheme, it published.)</span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'> </span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>The bottom
line: I agree with the last proposal for H.323v4:</span></font><font size=2
color=black><span style='font-size:10.0pt;color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>No parameters
at all. The default: H.225.0/Q.931/Setup with its default TCP port. </span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>Paul?</span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'> </span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 color=black
face="Times New Roman"><span style='font-size:10.0pt;color:black'>Best Regards,</span></font><font
size=2 color=black><span style='font-size:10.0pt;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black'>Orit Levin<br>
RADVision Inc.<br>
575 Corporate Drive Suite 420<br>
Mahwah, NJ 07430<br>
Tel: 1 201 529 4300  (230)<br>
Fax: 1 201 529 3516<br>
<a href="http://www.radvision.com">www.radvision.com</a><br>
<a href="mailto:orit@radvision.com">orit@radvision.com</a></span></font><font
color=black><span style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<div style='border:none;border-left:solid black 1.5pt;padding:0in 0in 0in 4.0pt'>

<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt;
margin-left:39.75pt;border:none;mso-border-left-alt:solid black 1.5pt;
padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><b><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black;
font-weight:bold'>-----Original Message-----</span></font></b><font size=2
color=black face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:black'><br>
<b><span style='font-weight:bold'>From: </span></b>Callaghan, Robert <<a
href="mailto:Robert.Callaghan@icn.siemens.com">Robert.Callaghan@icn.siemens.com</a>><br>
<b><span style='font-weight:bold'>To: </span></b>'Orit Levin' <<a
href="mailto:orit@radvision.com">orit@radvision.com</a>><br>
<b><span style='font-weight:bold'>Cc: </span></b><a
href="mailto:ITU-SG16@mailbag.cps.intel.com">ITU-SG16@mailbag.cps.intel.com</a>
<<a href="mailto:ITU-SG16@mailbag.cps.intel.com">ITU-SG16@mailbag.cps.intel.com</a>><br>
<b><span style='font-weight:bold'>Date: </span></b>Monday, September 11, 2000
1:53 PM<br>
<b><span style='font-weight:bold'>Subject: </span></b>RE: Revised H.323 URL
document</span></font><font size=2 color=black face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle20><font size=2 color="#003300" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Orit,<o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle20><font size=2 color="#003300" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle20><font size=2 color="#003300" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Let us try
to focus on a few points first:<span style="mso-spacerun: yes"> 
</span>(These are snippets from the thread.)<o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle20><font size=2 color="#003300" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:blue'>OL: Are you interested in efficiently running H.323 over the
Internet?<o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:blue'>RC: Yes!<span style="mso-spacerun: yes">  </span>For clarification,
this is the H.323 as defined in H.323v4 and H.225.0v4.<span
style="mso-spacerun: yes">  </span>For the November decision, there should
not be any extensions, implicit or explicit.<o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:blue'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle19><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial;color:blue'>OL: The picture,
in my mind, is different from yours and fits the "traditional" H.323.
For every H.323 call, logically there are (at least) two GKs: source and
destination. (Physically, both of them are optional, based on the
"mode" policy inside the corresponding H.323 zones.)<o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle19><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial;color:blue'>RC:<span
style="mso-spacerun: yes">  </span>I agree with your model of two endpoint
each with an optional GKs based on zone policies.<span style="mso-spacerun:
yes">  </span>The source and destination policies are independent from
each other.<span style="mso-spacerun: yes">  </span>I don't know how this
is different, as you state.<o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle19><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial;color:blue'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle19><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial;color:blue'>OL: </span></font></span><span
class=EmailStyle19><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>By specifying in H323-URL the
"mode" of operation between the source EP and a GK, you propose to
use the URL for "publishing" the relations between the EP and
"ITS" GK PER DESTINATION! It is, indeed, very different from the
H.323 today. Moreover, you implicitly introduce a concept of a
"source" GK, being re-defined each time BY THE DESTINATION. (This
case may be considered as an additional application for the H.323 URL)<o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle19><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>RC: I make so such assumption.<span
style="mso-spacerun: yes">  </span>In the "Direct" model, I
assume that the given address is directly callable.<span style="mso-spacerun:
yes">  </span>The routing model is not specified nor assumed.<span
style="mso-spacerun: yes">  </span>If the term "Direct" is a
problem in that the term overlaps with the routing model then the use of
"Callable" would be fine.<span style="mso-spacerun: yes"> 
</span>The use of the DNS service to convert the DNS domain to an IP address is
assumed.<span style="mso-spacerun: yes">  </span>This is also the only use
of the DNS server.<span style="mso-spacerun: yes">  </span>No DNS records
beyond the "A" record will be used.<span style="mso-spacerun:
yes">  </span>If the initial use of the H.323 URL could be limited to this
service.<o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle19><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>RC:<span style="mso-spacerun: yes"> 
</span>The use of the "Indirect" or "non callable" form has
bothered me in that its use is not clearly defined.<span style="mso-spacerun:
yes">  </span>My view is that this was a means to access an H.323
repository to obtain the true address.<span style="mso-spacerun: yes"> 
</span>Apparently there are other views.<span style="mso-spacerun: yes"> 
</span>Therefore I suggest that a solution would be to drop this form for now.<o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle19><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle19><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial;color:blue'>OL: The natural
use of URLs is between the zones/domain. For H.323, it is an OPTION, what kind
of address resolution to propose and use. <u>The beauty of the URL approach is
that the DESTINATION provides an option to be reached using the DNS lookup</u>,
if it chooses so and populates properly the DNS.<o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle19><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial;color:blue'>RC: The may be
beautify for some; but it is definitely new.<span style="mso-spacerun:
yes">  </span>I know of nothing in H.323v4 that describes the procedures
and rules for this type of address resolution.<span style="mso-spacerun:
yes">  </span>This can be discussed as part of Annex O, after the decision
on H.323v4.<o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle19><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial;color:blue'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:blue'>OL: We don't have to agree on the mailing list. We can spend more then
one meeting in order to reach "the consensus". In that case, I
would support the inclusion of the minimal H323-URL only (without any
parameters and without the PORT number) towards the H.323v4.<o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:blue'>RC: I agree that it is not possible to agree to a complex solution
on the mailing list.<span style="mso-spacerun: yes">  </span>However, I
hope that we can agree to a simple URL without any parameters or port (ouch! </span></font><font
size=2 color=blue face=Wingdings><span style='font-size:10.0pt;font-family:
Wingdings;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial;mso-bidi-font-family:
Arial;color:blue;mso-char-type:symbol;mso-symbol-font-family:Wingdings'><span
style='mso-char-type:symbol;mso-symbol-font-family:Wingdings'>J</span></span></font><font
size=2 color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:blue'>) where this URL is the actual address to be used in a SETUP
message.<span style="mso-spacerun: yes">  </span>This should not change
anything in H.323 including the use of the GK.<o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:blue'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:blue'>I hope that this helps.<o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:blue'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=blue face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:blue'>Bob</span></font><span class=EmailStyle19><font size=2
color="#993366" face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle20><font size=2 color="#003300" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>

<p class=MsoAutoSig style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><!--[if supportFields]><span 
class=EmailStyle20><font size=2 color="#003300" face=Arial><span 
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><span 
style='mso-element:field-begin'></span><span style="mso-spacerun: 
yes"> </span>AUTOTEXTLIST \s "E-mail Signature" <span 
style='mso-element:field-separator'></span></span></font></span><![endif]--><font
color="#003300"><span style='color:#003300'>------------------------------------------------------------------</span></font><font
color=black><span style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoAutoSig style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color="#339966" face="Cló Gaelach (Twomey)"><span style='font-size:12.0pt;
font-family:"Cló Gaelach \(Twomey\)";color:#339966'>Robert Callaghan<o:p></o:p></span></font></p>

<p class=MsoAutoSig style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=1
color="#003300" face="Times New Roman"><span style='font-size:8.0pt;mso-bidi-font-size:
12.0pt;color:#003300'>Siemens Enterprise Networks</span></font><font size=1
color=black><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;color:black;
mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoAutoSig style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=1
color="#003300" face="Times New Roman"><span style='font-size:8.0pt;mso-bidi-font-size:
12.0pt;color:#003300'>Tel: +1.561.923.1756<span style='mso-tab-count:1'>            </span>Fax:
+1.561.923.1403</span></font><font size=1 color=black><span style='font-size:
8.0pt;mso-bidi-font-size:12.0pt;color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoAutoSig style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=1
color="#003300" face="Times New Roman"><span style='font-size:8.0pt;mso-bidi-font-size:
12.0pt;color:#003300'>Email:<span style='mso-tab-count:1'>    </span>Robert.Callaghan@ICN.Siemens.com</span></font><font
size=1 color=black><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoAutoSig style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color="#003300" face="Times New Roman"><span style='font-size:12.0pt;
color:#003300'>------------------------------------------------------------------</span></font><font
color=black><span style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:39.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><!--[if supportFields]><span 
class=EmailStyle20><font size=2 color="#003300" face=Arial><span 
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'><span 
style='mso-element:field-end'></span></span></font></span><![endif]--><font
color=black><span style='color:black'><![if !supportEmptyParas]> <![endif]></span></font><font
color=black><span style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

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