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<p class=MsoNormal><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><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'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>
<p class=MsoNormal><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'>See below.<o:p></o:p></span></font></span></p>
<p class=MsoNormal><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'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>
<p class=MsoNormal><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><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'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>
<p class=MsoNormal><!--[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
size=1 color=navy><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
color:navy'>------------------------------------------------------------------</span></font><font
size=1 color=navy><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=green face="Cló Gaelach (Twomey)"><span
style='font-size:12.0pt;font-family:"Cló Gaelach \(Twomey\)";color:green'>Robert
Callaghan<o:p></o:p></span></font></p>
<p class=MsoNormal><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=navy><span style='font-size:8.0pt;
mso-bidi-font-size:12.0pt;color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal><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=navy><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal><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=navy><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=navy face="Times New Roman"><span
style='font-size:8.0pt;mso-bidi-font-size:12.0pt;color:navy'>------------------------------------------------------------------</span></font><font
size=1 color=navy><span style='font-size:8.0pt;mso-bidi-font-size:12.0pt;
color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal><!--[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'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></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:1.5in;border:none;mso-border-left-alt:solid black 1.5pt;padding:
0in;mso-padding-alt:0in 0in 0in 4.0pt'><font size=2 color=navy
face="Times New Roman"><span style='font-size:10.0pt;color:navy'>(0) The use of
url means the "address resolution" is done (by the local GK) using
the DNS, not RAS! This is why the "user only" url of H.323, is really
an exceptional case. It is a question, if we want to keep it within the
url. It lets the local (source) GK know, that the "address resolution"
procedure should performed by other, then DNS, means. The
"protocol" means: the signaling H.323 protocol to contact the (next
hop towards the) destination, after the IP address had been
resolved.</span></font><font color=navy><span style='color:navy;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='margin-left:39.75pt'><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:1.25in;text-indent:-.25in;mso-list:l0 level1 lfo2;
tab-stops:list 1.25in'><![if !supportLists]><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black;
mso-color-alt:windowtext'>(0)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></font><![endif]><font
color=black face=Arial><span style='font-family:Arial;color:black'>I will
remove the reference to RAS and expect to see an explicit description of the
procedure in Annex O. What I would expect is that the <em><i>hostport</i></em>
part will resolve to a GK to which LRQ messages are directed.</span></font><font
color=black face=Arial><span style='font-family:Arial;color:black;mso-color-alt:
windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 color=navy
face="Times New Roman"><span style='font-size:12.0pt;color:navy'><![if !supportEmptyParas]> <![endif]></span></font><font
color=navy><span style='color:navy;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=navy><span style='color:navy'>[RWC] Now I am confused.<span
style="mso-spacerun: yes"> </span>I thought that DNS was used to locate the
resolution server.<span style="mso-spacerun: yes"> </span>Then LRQ(RAS) was used
to communicate with that server to resolve the address of the user.<span
style="mso-spacerun: yes"> </span>The server doing the address resolution may
not be involved in the final connections.</span></font><font color=black><span
style='color:black;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal><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'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>
<p class=MsoNormal><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'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>(1) I
disagree that it is the exception. I would contend that calling a
specific machine would be the exception. Sure, one can call and endpoint
directly, but that's not typical. It is in testing and development
environments, but in production environments, users enter telephone
numbers. Also, I can imagine intranets where the h323 URL might be
used. At work, I might post a page with "h323:paulej", but I
would never post "h323:@cisco.com". However, the latter is allowed,
of course. What I <em><i>do not</i></em> want is "h323:paulej@"
on a web page. That's ugly, in my opinion. I realize that the SIP
folks chose that, but it seems illogical to me.</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=navy
face="Times New Roman"><span style='font-size:12.0pt;color:navy'><![if !supportEmptyParas]> <![endif]></span></font><font
color=navy><span style='color:navy;mso-color-alt:windowtext'><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><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'>[RWC] I do not see any relationship between an URL
and a telephone number. <span style="mso-spacerun: yes"> </span>If a user
enters a telephone number the connection should be established using either the
dialedDigits alias or the partyNumber alias not the URL-id alias.<span
style="mso-spacerun: yes"> </span>For me, the URL user should be a name type structure
like in email users.<span style="mso-spacerun: yes"> </span>This allows for a number
as a name but not as a telephone number.<span style="mso-spacerun: yes">
</span>I do not accept the SIP and ENUM concept where telephone numbers are
funny names with a default domain for DNS. <span style="mso-spacerun:
yes"> </span>In fact, I think that this will not work due to difficulties with
administration ownership of telephone numbers.<o:p></o:p></span></font></span></p>
<p class=MsoNormal style='margin-left:.5in'><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'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></p>
<p class=MsoNormal style='margin-left:.5in'><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'>[RWC]<span style="mso-spacerun: yes"> </span>I do agree
that user only will be an exception because it forces the use of a default domain
for DNS.<span style="mso-spacerun: yes"> </span>It is not likely that there
will be universal default domain.<o:p></o:p></span></font></span></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:1.0in'><font size=3 color=black
face=Arial><span style='font-size:12.0pt;font-family:Arial;color:black'>(2) If
I provided "h323:@192.168.1.1;proto=q931", a device should assume
that it can reach it on the default 1720 port or the default Annex E port (as
described in Annex E). If, however, I use a different port like
"h323:@192.168.1.1:2500;proto=q931", I would say that Annex E is out
of the picture. That is another reason why I believe the first step to
resolution should be through a Gatekeeper. The gatekeeper can not only
resolve the address, but also indicate any non-standard ports, including both
the TCP and Annex E transport information.</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'><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'>[RWC] In this case the endpoint that wished to use
Annex E must support the requirement of Annex E that requires the ability to
fall back to TCP.<o:p></o:p></span></font></span></p>
<p class=MsoNormal style='margin-left:.5in'><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'><![if !supportEmptyParas]> <![endif]><o:p></o:p></span></font></span></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'><![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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