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<div class=Section1>

<p class=MsoNormal><span class=EmailStyle21><font size=2 color="#003300"
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'>Paul,<o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><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><span class=EmailStyle21><font size=2 color="#003300"
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'>In my mind, Direct meant callable and Indirect meant not callable. <span
style="mso-spacerun: yes"> </span>In either case the DNS portion of the
URL identified the target entity for the initial contact. <span
style="mso-spacerun: yes"> </span>I have no problem with the use of a DNS
server providing the IP address of this entity through the use of the A
record.<span style="mso-spacerun: yes">  </span>However, this is the limit
to the use of DNS records, at this time.<span style="mso-spacerun: yes"> 
</span>Until the procedures are resolve, there can be no use of service records
etc.<o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><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><span class=EmailStyle21><font size=2 color="#003300"
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'>As to a domain being “administrative” or “DNS” – the DNS portion of the
URL has to relate to the DNS domain in that this is the definition of DNS.<span
style="mso-spacerun: yes">  </span>However, it may be possible to have
resolution of the URL addresses be an extension of Annex G so that the
information exchange between administrative domains may be used to resolve the
address. <span style="mso-spacerun: yes"> </span>However, this is future.<o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><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><span class=EmailStyle21><font size=2 color="#003300"
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'>Bob<o:p></o:p></span></font></span></p>

<p class=MsoNormal><span class=EmailStyle21><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><!--[if supportFields]><span class=EmailStyle21><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="#003300"><span style='color:#003300;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="#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="#003300"><span
style='font-size:8.0pt;mso-bidi-font-size:12.0pt;color:#003300;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoAutoSig><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="#003300"><span
style='font-size:8.0pt;mso-bidi-font-size:12.0pt;color:#003300;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>

<p class=MsoAutoSig><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="#003300"><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
color:#003300;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoAutoSig><font size=3 color="#003300" face="Times New Roman"><span
style='font-size:12.0pt;color:#003300'>------------------------------------------------------------------</span></font><font
color="#003300"><span style='color:#003300;mso-color-alt:windowtext'><o:p></o:p></span></font></p>

<p class=MsoNormal><!--[if supportFields]><span class=EmailStyle21><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]--><span
class=EmailStyle21><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:.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> Paul E. Jones [mailto:paulej@PACKETIZER.COM]<br>
<b><span style='font-weight:bold'>Sent:</span></b> Sunday, September 10, 2000
12:12 AM<br>
<b><span style='font-weight:bold'>To:</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=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>Bob and
Orit,</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:.5in'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:.5in'><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>Indeed,
it would appear that this "proto" or "mode" parameter is
still a bit contentious.</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:.5in'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:.5in'><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>Let me
make a few comments.. my immediate goal is to see H.323v4 brought to
Decision.  We can haggle over Annex O (which will contain all of the
specific procedural text) later on.  I agree with Bob-- we will have a few
of these meetings, I am sure.</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:.5in'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:.5in'><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>There
is nothing in the URL scheme itself that would prevent a Gatekeeper or an
endpoint from utilizing DNS.  When the mode is specified as
"direct", we specified that the <em><i>hostname</i></em> resolves has
an associated 'A' record in DNS.  However, if I give you h323:<a
href="mailto:paulej@packetizer.com">paulej@packetizer.com</a>, you can't assume
that 'packetizer.com' will have an 'A' record-- and if it does, it may not
contain H.323 entity (endpoint, GK, or BE).  So, in the
"indirect" mode (the default), the endpoint must somehow turn this
URL into a callable address.  Now, the procedure for this may involve DNS
or it may not.  The text I last sent out suggested that this is the
"domain name", but I did not say DNS or "administrative domain
name".  I can imagine that either may be utilized, but I also prefer
that the "domain name" refer to a DNS domain name and would also like
to propose that the "domain name" mentioned in this section
be qualified with "DNS domain name": that might not sit well--
Bob?</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:.5in'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:.5in'><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>How
about this: what if I remove the text that says that "indirect" means
that "an endpoint shall use a Gatekeeper to resolve the
address".  Instead, I will say "the <em><i>mode</i></em> value <em><i>indirect</i></em>
indicates that the <em><i>address</i></em> does not refer to a callable H.323
entity.  The procedure for resolving such an <em><i>address </i></em>is
for further study."  Making this change does not prevent a Gatekeeper
from being involved and it also does not prevent an endpoint from doing some
type of direct resolution.  Perhaps this will get us past this-- we'll
debate this when we get to Annex O.</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:.5in'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:.5in'><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>Orit,
one thing you say over and over again is "direct" and
"routed".  I never used the word "routed"-- do not
mistake "indirect" for "routed".  The word
"direct" versus "indirect" merely indicated that the entity
is callable or not.</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:.5in'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:.5in'><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>Perhaps
this: in addition to making the above change, we change "mode" to "callable". 
The URL will then take this form:</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:.5in'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:.5in'><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>h323:paulej@packetizer.com;callable=no</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:.5in'><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>or</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:.5in'><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>h323:paulej@paris.packetizer.com;callable=yes</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:.5in'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:.5in'><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>The
default would be "callable=no".  This equates to the same thing
as "mode=direct" and "mode=indirect", but perhaps it's
clearer?  (Or perhaps not...  I personally prefer
"mode=[in]direct").</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:.5in'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:.5in'><font size=3 color=black
face=Arial><span lang=FR style='font-size:12.0pt;font-family:Arial;color:black;
mso-ansi-language:FR'>Paul</span></font><font color=black><span lang=FR
style='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=3 color=black
face="Times New Roman"><span lang=FR style='font-size:12.0pt;color:black;
mso-ansi-language:FR'> </span></font><font color=black><span lang=FR
style='color:black;mso-color-alt:windowtext;mso-ansi-language:FR'><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;mso-margin-bottom-alt:auto;
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=black
face=Arial><span lang=FR style='font-size:10.0pt;font-family:Arial;color:black;
mso-ansi-language:FR'>----- Original Message ----- </span></font><font size=2
color=black face=Arial><span lang=FR style='font-size:10.0pt;font-family:Arial;
color:black;mso-color-alt:windowtext;mso-ansi-language:FR'><o:p></o:p></span></font></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
margin-left:39.75pt;background:#E4E4E4;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'>

<div style='font-color:black'>From:</span></font></b><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'> <a
href="mailto:Robert.Callaghan@icn.siemens.com"
title="Robert.Callaghan@icn.siemens.com">Callaghan, Robert</a> </span></font></div>

<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='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
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'>To:</span></font></b><font size=2 color=black face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:black'> <a
href="mailto:orit@radvision.com" title="orit@radvision.com">'Orit Levin'</a> ; <a
href="mailto:paul.jones@ties.itu.ch" title="paul.jones@ties.itu.ch">Paul E.
Jones</a> </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='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
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'>Cc:</span></font></b><font size=2 color=black face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:black'> <a
href="mailto:ITU-SG16@mailbag.cps.intel.com"
title="ITU-SG16@mailbag.cps.intel.com">Mailing list for parties associated with
ITU-T Study Group 16 (E-mail)</a> </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='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
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'>Sent:</span></font></b><font size=2 color=black face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:black'> Friday, September 08,
2000 4:45 PM</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='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
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'>Subject:</span></font></b><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'> RE:
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='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
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=black
face="Times New Roman"><span style='font-size:12.0pt;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>

<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="#993366" 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=EmailStyle19><font size=2 color="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;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=EmailStyle19><font size=2 color="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Based on
this email, we have not agreement at all.<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="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'> <o:p></o:p></span></font></span></p>

</div>

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

<p class=MsoNormal style='margin-left:75.75pt;text-indent:-.25in;tab-stops:
list .5in;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="#993366" face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:
12.0pt;font-family:Arial'>1)</span></font></span><span class=EmailStyle19><font
size=1 color="#993366"><span style='font-size:7.0pt;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"'>      
</span></font></span><span class=EmailStyle19><font size=2 color="#993366"
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'>I am not interest at all in developing an addressing scheme for the sole
reason that it mimics the addressing schemes used by SIP.<span
style="mso-spacerun: yes">  </span>SIP is very oriented towards the
concept of domains defined by DNS and a user in that domain.<span
style="mso-spacerun: yes">  </span>H.323 is oriented towards administration
domains defined by one or more gatekeepers and users attached to those
gatekeepers.<span style="mso-spacerun: yes">  </span>The only commonality
is that a gatekeeper can be a server with a name defined by DNS.<span
style="mso-spacerun: yes">  </span>These distinctions must remain.<o:p></o:p></span></font></span></p>

</div>

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

<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="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'> <o:p></o:p></span></font></span></p>

</div>

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

<p class=MsoNormal style='margin-left:75.75pt;text-indent:-.25in;tab-stops:
list .5in;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="#993366" face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:
12.0pt;font-family:Arial'>2)</span></font></span><span class=EmailStyle19><font
size=1 color="#993366"><span style='font-size:7.0pt;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"'>      
</span></font></span><span class=EmailStyle19><font size=2 color="#993366"
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'>It is unacceptable to force the implementation of annex G on any
endpoint, gatekeeper or administrative domain.<span style="mso-spacerun:
yes">  </span>Therefore the differentiation between the use of Annex G or
the use of LRQ should not known to the originating endpoint.<span
style="mso-spacerun: yes">  </span>The differentiation should be that this
address defines the destination endpoint (direct relationship) or it defines a
source for resolving the destination endpoint address (indirect).<span
style="mso-spacerun: yes">  </span><o:p></o:p></span></font></span></p>

</div>

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

<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="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'> <o:p></o:p></span></font></span></p>

</div>

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

<p class=MsoNormal style='margin-left:75.75pt;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="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>In my
view, in the direct relation a SETUP message is routed towards the entity
defined by the DNS where the user portion is resolved.<span
style="mso-spacerun: yes">  </span>This may be direct routed or gatekeeper
routed, it does not matter.<span style="mso-spacerun: yes">  </span>The
endpoint defined by the DNS may be a gatekeeper or the endpoint itself where the
user portion defines one of multiple users on that endpoint.<span
style="mso-spacerun: yes">  </span><o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:75.75pt;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="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'> <o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:75.75pt;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="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>For the
indirect relationship, the endpoint must resolve the address of the destination
address before sending the SETUP message.<span style="mso-spacerun:
yes">    </span>Based on H.323 procedures, the endpoint sends
ARQ to its GK.<span style="mso-spacerun: yes">  </span>How the GK resolves
the address is within the capabilities of the GK.<span style="mso-spacerun:
yes">  </span>It may use Annex G, it this is possible.<span
style="mso-spacerun: yes">  </span>Or, it may fall back to LRQ to the
entity specified by the DNS name.<o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:75.75pt;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="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'> <o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:75.75pt;text-indent:-.25in;tab-stops:
list .5in;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="#993366" face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:
12.0pt;font-family:Arial'>3)</span></font></span><span class=EmailStyle19><font
size=1 color="#993366"><span style='font-size:7.0pt;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"'>      
</span></font></span><span class=EmailStyle19><font size=2 color="#993366"
face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:
Arial'>The definition of an H.323 URL cannot be the vehicle to implicitly
define new procedures for address resolution.<span style="mso-spacerun:
yes">  </span>If a new procedure for address resolution is to be defined,
it must be explicit, and it must be clear.<span style="mso-spacerun:
yes">  </span>These requirements have not been realized.<span
style="mso-spacerun: yes">  </span>I have seen no procedural text that has
full agreement.<span style="mso-spacerun: yes">  </span>I have seen Annex
O as a working document, but this is a year from closure.<span
style="mso-spacerun: yes">  </span>I expect to have many discussions on
this subject in future meetings (note the plural).<span style="mso-spacerun:
yes">  </span>The H.323 URL we have for November must support the existing
H.323 procedures without any implicit extension or modification.<o:p></o:p></span></font></span></p>

</div>

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

<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="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;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=EmailStyle19><font size=2 color="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>I think
that Paul’s proposal meets the requirements that I have stated. <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="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;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=EmailStyle19><font size=2 color="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Where does
this leave us now?<span style="mso-spacerun: yes">  </span><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="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;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=EmailStyle19><font size=2 color="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Bob<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="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'> <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=EmailStyle19><font size=2 color="#993366" 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="#993366"><span style='color:#993366'>------------------------------------------------------------------</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="#993366" face="Times New Roman"><span style='font-size:8.0pt;mso-bidi-font-size:
12.0pt;color:#993366'>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="#993366" face="Times New Roman"><span style='font-size:8.0pt;mso-bidi-font-size:
12.0pt;color:#993366'>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="#993366" face="Times New Roman"><span style='font-size:8.0pt;mso-bidi-font-size:
12.0pt;color:#993366'>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="#993366" face="Times New Roman"><span style='font-size:12.0pt;
color:#993366'>------------------------------------------------------------------</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=EmailStyle19><font size=2 color="#993366" 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=EmailStyle19><font size=2 color="#993366" face=Arial><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'> <o:p></o:p></span></font></span></p>

</div>

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

<p class=MsoNormal style='margin-left:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=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> Friday, September 08, 2000
3:57 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Paul E. Jones; Robert (Bob)
Callaghan<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: Re: Revised H.323 URL
document</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>Hello
Paul and Bob!</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>I
prepared the following "speech" for the mailing list, but it is
definitely better to try to understand each other first...</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>---------------------------------------</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>I
hate to disappoint you, but I would strongly disagree with the proposed
"mode" terminology.</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>I
will try to explain below, why it does not fit the URL concept.</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>1.
The MAIN purpose of URL is to use the Internet DNS Infrastructure
for SERVICE+ADDRESS resolution ACROSS the DOMAINS.</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>(The
use of the "user-only" URL is [just] a possible additional feature.)</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>2.
The H.323 "direct vs. routed" concept specifies the relations
between an End Point and ITS Gatekeeper. It is an local policy
issue WITHIN their zone.</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>Today,
according to H.323 specification, the real flavor of the operational mode
in the DESTINATION zone is UNKNOWN (and irrelevant) to the originator
of the call. </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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>Not
mentioning the future possible GK decomposition!...</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>3.
Following the proposed "mode" terminology, I guess,
"routed" would mean "LRQ" or "Access Request" and
"direct" would mean "Setup". In reality, the LRQ would lead
to the "direct call" and the Setup would lead to the "routed
call". And how to distinguish between the all three?</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>4.
The INTER-ZONE communication haven't been solidly defined so
far. </span></font><font size=2 color=black><span lang=FR style='font-size:
10.0pt;color:black;mso-ansi-language:FR'>(LRQ ? Annex G?)</span></font><font
color=black><span lang=FR style='color:black;mso-color-alt:windowtext;
mso-ansi-language:FR'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>The INTER-DOMAIN
communication is the subject of H.225.0 Annex G.  </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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>The
URL approach is an OPTION for all of the "intra" and
"inter" H.323 Zone and H.323 Domain cases.</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>It may
be used as a first lookup, before the LRQ or Annex G are performed.</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>It may
also have an overlapping functionality with LRQ and with very specific PARTS of
Annex G.</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>The
relations between the H.323 URL and H.225.0 "Annex G" are very
close to those of the SIP-URL and TRIP in a "SIP system".
Both have their uses and complement each other.</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>5.
The proposal is to have a possibility to "publish", using the URL,
the first procedure, to be issued towards the destination
"domain".</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>By
its nature, it is not an issue for standardization. It is a policy of the
destination domain, which also is responsible for the URL itself.</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>The
first procedure (i.e. the "method") required for establishing of a
specific call across domains/zones can be either of the following:</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>-   
H.225.0 Annex G/AccessRequest</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>-   
H.225.0/LRQ</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>-   
H.225.0/CALL SETUP</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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=black face="Times New Roman"><span style='font-size:10.0pt;color:black'>Once, the
first message is issued towards the destination (which is a result of DNS
lookup using the URL), the rest of the procedures are, indeed, very
well defined by H.323 and H.225.0 Annex G all together. </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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2
color=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:75.75pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=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>

<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:79.5pt;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><a
href="mailto:ITU-SG16@MAILBAG.INTEL.COM">ITU-SG16@MAILBAG.INTEL.COM</a> <<a
href="mailto:ITU-SG16@MAILBAG.INTEL.COM">ITU-SG16@MAILBAG.INTEL.COM</a>><br>
<b><span style='font-weight:bold'>Date: </span></b>Thursday, September 07, 2000
8:17 AM<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:79.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle18><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Paul,<o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:79.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle18><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'> <o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:79.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle18><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>I definitely like
"mode" as a replacement for "protocol." <span
style="mso-spacerun: yes"> </span>It clearly represents the required
procedure without over doing details.<o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:79.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle18><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'> <o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:79.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle18><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>I think that we got it.<o:p></o:p></span></font></span></p>

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solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle18><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'> <o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:79.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle18><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'>Bob<o:p></o:p></span></font></span></p>

<p class=MsoNormal style='margin-left:79.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><span
class=EmailStyle18><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;mso-bidi-font-size:12.0pt;font-family:Arial'> <o:p></o:p></span></font></span></p>

<p class=MsoAutoSig style='margin-left:79.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><!--[if supportFields]><span 
class=EmailStyle18><font size=2 color=navy 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=navy><span style='color:navy'>------------------------------------------------------------------</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:79.5pt;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:79.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=1
color=navy face="Times New Roman"><span style='font-size:8.0pt;mso-bidi-font-size:
12.0pt;color:navy'>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:79.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=1
color=navy face="Times New Roman"><span style='font-size:8.0pt;mso-bidi-font-size:
12.0pt;color:navy'>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:79.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=1
color=navy face="Times New Roman"><span style='font-size:8.0pt;mso-bidi-font-size:
12.0pt;color:navy'>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:79.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=navy face="Times New Roman"><span style='font-size:12.0pt;color:navy'>------------------------------------------------------------------</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:79.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><!--[if supportFields]><span 
class=EmailStyle18><font size=2 color=navy 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=EmailStyle18><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;mso-bidi-font-size:
12.0pt;font-family:Arial'> <o:p></o:p></span></font></span></p>

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<p class=MsoNormal style='margin-left:115.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><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> Paul E. Jones
[mailto:paulej@acm.org]<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, September 06, 2000
11:20 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Robert Callaghan; Orit Levin;
ITU-SG16@mailbag.cps.intel.com<br>
<b><span style='font-weight:bold'>Subject:</span></b> Revised H.323 URL
document</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:115.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:115.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face=Arial><span lang=FR style='font-size:12.0pt;font-family:Arial;
color:black;mso-ansi-language:FR'>Orit, Bob, et al,</span></font><font
color=black><span lang=FR style='color:black;mso-color-alt:windowtext;
mso-ansi-language:FR'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:115.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face="Times New Roman"><span lang=FR style='font-size:12.0pt;
color:black;mso-ansi-language:FR'> </span></font><font color=black><span
lang=FR style='color:black;mso-color-alt:windowtext;mso-ansi-language:FR'><o:p></o:p></span></font></p>

<p class=MsoNormal style='margin-left:115.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face=Arial><span style='font-size:12.0pt;font-family:Arial;
color:black'>Attached is the revised section covering the syntax of the H.323
URL.  This (I hope) includes all of the changes we have discussed so
far.  I am not sure that we settled on the "mode" parameter, but
I made the change here in this document-- feedback is welcome.</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:115.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face="Times New Roman"><span style='font-size:12.0pt;color:black'> </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:115.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face=Arial><span style='font-size:12.0pt;font-family:Arial;
color:black'>Best Regards,</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:115.5pt;border:none;mso-border-left-alt:
solid black 1.5pt;padding:0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=3
color=black face=Arial><span style='font-size:12.0pt;font-family:Arial;
color:black'>Paul</span></font><font color=black><span style='color:black;
mso-color-alt:windowtext'><o:p></o:p></span></font></p>

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