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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Thanks Cheol,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">I have included your proposed change in the wording.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">For TCP UT Layer, I am not sure whether we should add something.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Please see below for my detailed replies.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="mso-ligatures:none">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-ligatures:none">Felix<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-ligatures:none">From:</span></b><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-ligatures:none">
</span><span style="font-family:"Malgun Gothic",sans-serif;mso-ligatures:none">구철회</span><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-ligatures:none"> <chkoo@kari.re.kr>
<br>
<b>Sent:</b> Wednesday, September 25, 2024 2:01 AM<br>
<b>To:</b> Felix Flentge <Felix.Flentge@esa.int><br>
<b>Cc:</b> sis-cfdpv1@mailman.ccsds.org; Tomaso.deCola@dlr.de<br>
<b>Subject:</b> RE: [SIS-CFDPV1] CCSDS 722.1-M-2: CFDP Unitdata Transfer Layers - Final Draft<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Hi Felix.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Thanks for the feedback. Please see my comments below with red text.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Best,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Cheol<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">From:</span></b><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">
Felix Flentge <<a href="mailto:Felix.Flentge@esa.int">Felix.Flentge@esa.int</a>>
<br>
<b>Sent:</b> Monday, September 23, 2024 10:31 PM<br>
<b>To:</b> </span><span lang="KO" style="font-family:"Gulim",sans-serif;mso-ligatures:none;mso-fareast-language:KO">구철회</span><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO"> <<a href="mailto:chkoo@kari.re.kr">chkoo@kari.re.kr</a>><br>
<b>Cc:</b> <a href="mailto:sis-cfdpv1@mailman.ccsds.org">sis-cfdpv1@mailman.ccsds.org</a>;
<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a><br>
<b>Subject:</b> RE: [SIS-CFDPV1] CCSDS 722.1-M-2: CFDP Unitdata Transfer Layers - Final Draft<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="mso-fareast-language:EN-US">Thanks Cheol,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="mso-fareast-language:EN-US">Please see my replies to your comments below.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="mso-fareast-language:EN-US">I have already integrated the changes into the version in CWE.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="mso-ligatures:none;mso-fareast-language:KO">Regards,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span style="mso-ligatures:none;mso-fareast-language:KO">Felix<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:72.0pt"><b><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">From:</span></b><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">
<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a> <<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>>
<br>
<b>Sent:</b> Monday, September 23, 2024 2:22 PM<br>
<b>To:</b> <a href="mailto:chkoo@kari.re.kr">chkoo@kari.re.kr</a>; Felix Flentge <<a href="mailto:Felix.Flentge@esa.int">Felix.Flentge@esa.int</a>><br>
<b>Cc:</b> <a href="mailto:sis-cfdpv1@mailman.ccsds.org">sis-cfdpv1@mailman.ccsds.org</a><br>
<b>Subject:</b> RE: [SIS-CFDPV1] CCSDS 722.1-M-2: CFDP Unitdata Transfer Layers - Final Draft<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-fareast-language:KO">Hi Felix, Cheol, all,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-fareast-language:KO">I’d suggest to address this point (and any other the rest of the CFPD folks may have) until end of next week, so that afterwards
I can do my own review and if everything is ok I’ll issue the area resolution towards the CESG review necessary for starting the agency review.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-fareast-language:KO">Thank you all!<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-fareast-language:KO"><br>
Tomaso<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-US" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:72.0pt"><b><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">From:</span></b><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">
</span><span lang="KO" style="font-family:"Malgun Gothic",sans-serif;mso-ligatures:none;mso-fareast-language:KO">구철회</span><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO"> <<a href="mailto:chkoo@kari.re.kr">chkoo@kari.re.kr</a>>
<br>
<b>Sent:</b> Freitag, 20. September 2024 04:13<br>
<b>To:</b> Felix Flentge <<a href="mailto:Felix.Flentge@esa.int">Felix.Flentge@esa.int</a>>; de Cola, Tomaso <<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>><br>
<b>Cc:</b> <a href="mailto:sis-cfdpv1@mailman.ccsds.org">sis-cfdpv1@mailman.ccsds.org</a><br>
<b>Subject:</b> RE: [SIS-CFDPV1] CCSDS 722.1-M-2: CFDP Unitdata Transfer Layers - Final Draft<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-US" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Hi, Felix.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Thanks for the hard work. I just have some minor comments to bring similarities of
writing across all UT layers.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">O SPP UT Layer
</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> on page 3-2<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">3.3 SPACE PACKET PROTOCOL UT LAYER<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">(comment) is there any potential needs for aggregation in this UT layer? If so, we can add it.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:32.4pt;word-break:break-all">
<b><span lang="EN-US" style="color:#00B050;mso-fareast-language:KO">FF: I didn’t see a need for aggregation for space packets (overhead is quite small). Allowing aggregation would also not be fully backward compatible with the current Magenta Book.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:32.4pt;word-break:break-all">
<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:red;mso-fareast-language:KO">Cheol: I agree.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">O BP UT Layer - on page 3-5<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> 3.4.4 A CFDP UNITDATA.request shall generate a Send.request where:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:20.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> The application data unit shall
<u>be</u> an aggregation of CFDP PDU according to 3.1.4<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">(comment) to
</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">“</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> ~ shall
<b><u>be able to contain</u></b> an aggregation of CFDP PDU ~</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">”</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">
because original sentence can be interpreted as only aggregated CFDP PDUs are allowed in BP UT layer<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">(suggestion) change
</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">“</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">shall contain</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">”</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">
to </span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">“</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">shall be able to contain</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">”</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">
</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">through whole contents to avoid mandating of the aggregation CFDP PDUs as only allowable option<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:#00B050;mso-fareast-language:KO">FF: I would think that 3.1.4 is sufficient. I would propose to change
the text of 3.1.4 slightly to:<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:#00B050;mso-fareast-language:KO">An aggregation of CFDP PDU shall be a single CFDP PDU or a concatenation
of several complete CFDP PDU with the same destination entity ID without any additional data.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> <span style="color:red">Cheol: That would be nice! How about this change?<o:p></o:p></span></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:red;mso-fareast-language:KO"> An aggregation of CFDP PDU
<u>in the context of this document means</u> a single CFDP PDU or a concatenation of several complete CFDP PDU with the same destination entity ID without any additional data.</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="word-break:break-all"><b><span lang="EN-US" style="color:#3B7D23;mso-style-textfill-fill-color:#3B7D23;mso-style-textfill-fill-alpha:100.0%;mso-fareast-language:KO">FF: added ‘in the context of this document’ but kept the shall to
remain normative.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span lang="EN-US" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">O LTP UT Layer - on page 3-6 ~ 3.7<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:10.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> Red-part bytes is the part of the client
service data which has been sent reliably; for CFDP this will be the <u>complete client data</u><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:10.0pt;word-break:break-all">
<span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">(comment) to
</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">“</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">~~ will be the
<b><u>single, complete CFDP PDU or aggregation of CFDP PDUs according to 3.1.4.</u></b></span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">”</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">
to reuse sentences that are repeatedly used in other sentences and the complete client data can be ambiguous because it could be interpreted as entire CFDP data or unit segment of CFDP PDU<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span lang="EN-US" style="color:#00B050;mso-fareast-language:KO">FF: In 3.5.1 we are just discussing the requests and indications. That we send an aggregation of CFDP PDU is coming later.
I would keep it like it is (or remove the half-sentence completely)<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span lang="EN-US" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:10.0pt;word-break:break-all">
<span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">3.5.4 A CFDP UNITDATA.request shall generate a Transmission.request where:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:15.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–
</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">The client service data to send shall contain an aggregation of CFDP PDU according to 3.1.4.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:15.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> Length of red-part shall be set to the
size of the aggregation of CFDP PDU.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> (comment) to
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:15.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> The client service data to send shall
<b><u>be able to</u></b> contain an aggregation of CFDP PDU according to 3.1.4.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:15.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> Length of red-part shall be set to the
size of <b><u>a complete CFDP PDU or the size of aggregation of CFDP PDUs.</u></b><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> Because aggregation of CFDP PDUs in BP UT Layer and LTP UT Layer is NOT an mandate,
but possibility I think.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span lang="EN-US" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:37.8pt;word-break:break-all">
<b><span lang="EN-US" style="color:#00B050;mso-fareast-language:KO">FF: see above. Being able to handle aggregation of CFDP PDU is mandatory. An implementation may decide to always have only a single CFDP PDU in the aggregation but it should be prepared to
receive aggregation with more than one.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:37.8pt;word-break:break-all">
<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:red;mso-fareast-language:KO">Cheol: If the change for explaining the meaning of the aggregation in the BP UT layer is fine, I am OK with it.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="word-break:break-all"><b><span lang="EN-US" style="color:#3B7D23;mso-style-textfill-fill-color:#3B7D23;mso-style-textfill-fill-alpha:100.0%;mso-fareast-language:KO">FF: OK, I have done the proposed change above.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="word-break:break-all"><span lang="EN-US" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> 3.5.5 A RedPartReception.indication shall generate a CFDP UNITDATA.indication
where:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:20.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> The CFDP protocol data unit UT_SDU shall
contain the red-part bytes, i.e. a complete aggregation of CFDP PDU according to 3.1.4.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> (comment) to
</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">“</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">The CFDP protocol data unit UT_SDU
shall contain the red-part bytes, i.e. <b><u>a complete CFDP PDU or completed CFDP PDUs if aggregation according to 3.1.4. is applied.</u></b></span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">”</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span lang="EN-US" style="color:#00B050;mso-fareast-language:KO">FF: see above.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">O UDP/IP UT Layer - on page 3-7<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">3.6.4 A CFDP UNITDATA.request shall
<u>send</u> a single UDP datagram with a single, complete CFDP PDU included in the data part.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">(comment) to
</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">“</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">A CFDP UNITDATA.request shall
<b><u>initiate sending a single, complete CFDP PDU via UDP datagram</u></b>.</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">”</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">
The theoretical limit of UDP datagram is 65535 (however, technically less than that), i.e. 64k bytes. So if user wants to set the CFDP segmentation as bigger than 64k, this UDP UT layer implementation should support multiple UDP datagram for sending bigger
CFDP PDU segmentation size. This sentence can be simplified as written in TCP/IP section.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:#00B050;mso-fareast-language:KO"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:37.8pt;word-break:break-all">
<b><span lang="EN-US" style="color:#00B050;mso-fareast-language:KO">FF: I disagree. Sending partial CFDP PDUs shall not be allowed, this is why we have one CFDP PDU = 1 UDP datagram.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:37.8pt;word-break:break-all">
<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:red;mso-fareast-language:KO">Cheol: This is tricky issue. UDPCL should handle big segment size. Does BP UT layer spec document say about this issue? IMO, UDPCL implementation
should handle this regardless of action of failure, simply discarding current transaction, or trying to recover like LTP. I think this issue could be revisited someday.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="word-break:break-all"><b><span lang="EN-US" style="mso-fareast-language:KO"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="word-break:break-all"><b><span lang="EN-US" style="color:#3B7D23;mso-style-textfill-fill-color:#3B7D23;mso-style-textfill-fill-alpha:100.0%;mso-fareast-language:KO">FF: Hmm, the maximum size of a CFDP PDU is just slightly more than
64k (header + PDU Data Field with max length of 2^16). Having CFDP PDU segmentation over UDP would require some additional protocol on-top (eg, a small header stating that this is the beginning of a CFDP PDU or a continuation + some identification of individual
PDU). I would think that this is too much unless we identify a real use case (so far, UDP seems to be only used for testing because it is easy to drop or delay UDP datagrams).
<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span lang="EN-US" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> (comment) this part also can have
</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">“</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">3.6.5 No non-CFDP data shall be
sent over a UDP datagram used by CFDP.</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">”</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">
instead of </span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">“</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">3.6.5 Only CFDP PDU
shall be sent to the UDP port of the listening CFDP application.</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">”</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">.
It</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">’</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">s your call.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span lang="EN-US" style="color:#00B050;mso-fareast-language:KO">FF: I would keep the current formulation.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">O TCP/IP UT Layer on page 3-8<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">3.7.4 A CFDP UNITDATA.request shall initiate sending a CFDP PDU via a TCP connection.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">(comment) to
</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">“</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">A CFDP UNITDATA.request shall initiate
sending a <b><u>single, complete</u></b> CFDP PDU via a TCP connection.</span><span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">”</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">
to reuse sentences that are repeatedly used in other sentences<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:37.8pt;word-break:break-all">
<b><span lang="EN-US" style="color:#00B050;mso-fareast-language:KO">FF: I would maybe re-phrase like : A CFDP UNITDATA.request shall initiate sending the
<u>complete</u> CFDP PDU via a TCP connection. (TCP is really different from the other protocols as it is connection-oriented and streaming).<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:37.8pt;word-break:break-all">
<b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:red;mso-fareast-language:KO">Cheol: I am OK with this change. One more. TCP UT layer can take an aggregation of CFDP PDU too as it is streaming like protocol.</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="word-break:break-all"><b><span lang="EN-US" style="color:#3B7D23;mso-style-textfill-fill-color:#3B7D23;mso-style-textfill-fill-alpha:100.0%;mso-fareast-language:KO">FF: As it is streaming, it is somehow always an aggregation. It
will not really change anything on the wire while for the other ‘aggregating’ UT Layers, aggregation has an impact on the transport structures. I see your point but would not like to change the current formulation. I have considered adding a Note to 3.7.4
but it seemed to be more confusing then helpful. (One issue that we don’t have a specified service interface for TCP/IP we can refer to; we could talk about sockets but this may be too implementation specific / technical).
<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Thanks.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Best,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Cheol<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span lang="EN-US" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="margin-left:72.0pt"><b><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">From:</span></b><span lang="EN-US" style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">
Felix Flentge via SIS-CFDPV1 <<a href="mailto:sis-cfdpv1@mailman.ccsds.org">sis-cfdpv1@mailman.ccsds.org</a>>
<br>
<b>Sent:</b> Tuesday, September 17, 2024 12:24 AM<br>
<b>To:</b> <a href="mailto:sis-cfdpv1@mailman.ccsds.org">sis-cfdpv1@mailman.ccsds.org</a>; Tomaso de Cola <<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>><br>
<b>Subject:</b> [SIS-CFDPV1] CCSDS 722.1-M-2: CFDP Unitdata Transfer Layers - Final Draft<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-US" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO">Hi,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO">I have just concluded my final edits of the update CFDP UT Layer Book:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO"><a href="https://protect2.fireeye.com/v1/url?k=c344be81-9cdfd489-c341cf0f-ac1f6bdccbcc-58999c315c09c414&q=1&e=0ea1970f-d756-498b-874d-8ffa4db02f4d&u=https%3A%2F%2Fcwe.ccsds.org%2Fsis%2F_layouts%2F15%2FWopiFrame.aspx%3Fsourcedoc%3D%257B4A0292CA-C9F5-4B5D-A39F-789C158465B5%257D%26file%3D722x1m2_CFDP%2520Unitdata%2520Transfer%2520Layers%2520Magenta%2520Book%2520DRAFT-C.doc%26action%3Ddefault%26CT%3D1726499472306%26OR%3DDocLibClassicUI">722x1m2_CFDP
Unitdata Transfer Layers Magenta Book DRAFT-C.doc (ccsds.org)</a><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO">I have done the changes as discussed during the last meeting. I hope that it is now very clear that only LTP red is expected to be used (see 3.5). For BP, I had to switch
back to refer to the current (BPv6) CCSDS Blue Book (I have been too optimistic regarding the publication of the BPv7 version). However, there is a note that the same principles will apply for BPv7 (see 3.4, I think this is the best we currently can do).<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO">I would like to submit it to the editor’s queue on 30 September (<a id="OWAAM8E459EAF3A6547C28DCA62437826996F" href="mailto:Tomaso.deCola@dlr.de"><span style="font-family:"Aptos",sans-serif;text-decoration:none">@Tomaso
de Cola</span></a>: please let me know how the process exactly works). So, if you have any final comments, please let me know before.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-ligatures:none;mso-fareast-language:KO">Regards,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-ligatures:none;mso-fareast-language:KO">Felix<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
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