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<p class="MsoNormal">Hi Peter,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">All the previously defined service areas, services, and operations are within the UOctet range.<o:p></o:p></p>
<p class="MsoNormal">They can be casted into the UOctet type.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best regards,<o:p></o:p></p>
<p class="MsoNormal">César Coelho<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="mso-ligatures:none">From:</span></b><span style="mso-ligatures:none"> Shames, Peter M (US 312B) <peter.m.shames@jpl.nasa.gov>
<br>
<b>Sent:</b> Saturday, May 20, 2023 1:16 AM<br>
<b>To:</b> Coelho, César <cesar.coelho@cgi.com>; moims-sc@mailman.ccsds.org<br>
<b>Subject:</b> Re: [EXTERNAL] [Moims-sc] [CCSDS] MAL Header - Optimization<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:red;mso-ligatures:none">EXTERNAL SENDER:
</span><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:black;mso-ligatures:none">Do not click any links or open any attachments unless you trust the sender and know the content is safe.</span><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:red;mso-ligatures:none"><br>
EXPÉDITEUR EXTERNE: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:black;mso-ligatures:none">Ne cliquez sur aucun lien et n’ouvrez aucune pièce jointe à moins qu’ils ne proviennent d’un expéditeur fiable, ou que vous ayez l'assurance
que le contenu provient d'une source sûre.</span><span style="mso-ligatures:none"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-ligatures:none"><o:p> </o:p></span></p>
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<p class="MsoNormal">It’s your choice, of course, but doesn’t this totally blow backward compatibility? The only way this would be allowed in most CCSDS specs is if it were given a different version number.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards, Peter<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black;mso-ligatures:none">From:
</span></b><span style="font-size:12.0pt;color:black;mso-ligatures:none">MOIMS-SC <<a href="mailto:moims-sc-bounces@mailman.ccsds.org">moims-sc-bounces@mailman.ccsds.org</a>> on behalf of MOIMS-SC MOIMS-SC <<a href="mailto:moims-sc@mailman.ccsds.org">moims-sc@mailman.ccsds.org</a>><br>
<b>Reply-To: </b>"Coelho, César" <<a href="mailto:cesar.coelho@cgi.com">cesar.coelho@cgi.com</a>><br>
<b>Date: </b>Friday, May 19, 2023 at 7:30 AM<br>
<b>To: </b>MOIMS-SC MOIMS-SC <<a href="mailto:moims-sc@mailman.ccsds.org">moims-sc@mailman.ccsds.org</a>><br>
<b>Subject: </b>[EXTERNAL] [Moims-sc] [CCSDS] MAL Header - Optimization<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-ligatures:none"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="DE">Dear SM&Cers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE"><o:p> </o:p></span></p>
<p class="MsoNormal">I would like to propose an optimization in the MAL Headers.<o:p></o:p></p>
<p class="MsoNormal">Basically, to change the type of Service Area, Service, and Operation, to UOctet (range is 0 to 255):<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" align="center" style="text-align:center;page-break-after:avoid">
<span lang="EN-GB" style="color:black">Field</span><span lang="EN-GB"><o:p></o:p></span></p>
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<p class="MsoNormal" align="center" style="text-align:center;page-break-after:avoid">
<span lang="EN-GB" style="color:black">Type</span><span lang="EN-GB"><o:p></o:p></span></p>
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<p class="MsoNormal" align="center" style="text-align:center;page-break-after:avoid">
<span lang="EN-GB" style="color:black">Description</span><span lang="EN-GB"><o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB">From<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB"><a href="#_URI_">Identifier</a><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right;page-break-after:avoid">
<span lang="EN-GB">Message Source<o:p></o:p></span></p>
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<td width="139" valign="top" style="width:104.5pt;border:solid windowtext 1.0pt;border-top:none;padding:1.45pt 4.3pt 1.45pt 4.3pt;height:1.0pt">
<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB">Authentication Id<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB"><a href="#_Blob_">Blob</a><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right;page-break-after:avoid">
<span lang="EN-GB">Authentication Identifier of Message Originator <o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB">To<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB"><a href="#_URI_">Identifier</a><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right;page-break-after:avoid">
<span lang="EN-GB">Message Destination<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB">Timestamp<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB"><a href="#_Time_">Time</a><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right;page-break-after:avoid">
<span lang="EN-GB">Message generation timestamp<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB">Interaction Type<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB"><a href="#_InteractionType_Enumeration">InteractionType</a><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right;page-break-after:avoid">
<span lang="EN-GB">Interaction Pattern Type<o:p></o:p></span></p>
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<td width="139" valign="top" style="width:104.5pt;border:solid windowtext 1.0pt;border-top:none;padding:1.45pt 4.3pt 1.45pt 4.3pt;height:1.0pt">
<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB">Interaction Stage<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB"><a href="#_UOctet">UOctet</a><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right;page-break-after:avoid">
<span lang="EN-GB">Interaction Pattern Stage<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB">Transaction Id<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB"><a href="#_Identifier_">Long</a><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right;page-break-after:avoid">
<span lang="EN-GB">Unique to consumer<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB">Service Area<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB" style="background:yellow;mso-highlight:yellow"><a href="#_UShort">UShort</a><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right;page-break-after:avoid">
<span lang="EN-GB">Service Area<o:p></o:p></span></p>
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<td width="139" valign="top" style="width:104.5pt;border:solid windowtext 1.0pt;border-top:none;padding:1.45pt 4.3pt 1.45pt 4.3pt;height:1.0pt">
<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB">Service<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB" style="background:yellow;mso-highlight:yellow"><a href="#_UShort">UShort</a><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right;page-break-after:avoid">
<span lang="EN-GB">Service <o:p></o:p></span></p>
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<tr style="page-break-inside:avoid;height:1.0pt">
<td width="139" valign="top" style="width:104.5pt;border:solid windowtext 1.0pt;border-top:none;padding:1.45pt 4.3pt 1.45pt 4.3pt;height:1.0pt">
<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB">Operation<o:p></o:p></span></p>
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<td width="144" valign="top" style="width:107.65pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:1.45pt 4.3pt 1.45pt 4.3pt;height:1.0pt">
<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB" style="background:yellow;mso-highlight:yellow"><a href="#_UShort">UShort</a><o:p></o:p></span></p>
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<td width="320" valign="top" style="width:239.8pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:1.45pt 4.3pt 1.45pt 4.3pt;height:1.0pt">
<p class="MsoNormal" align="right" style="text-align:right;page-break-after:avoid">
<span lang="EN-GB">Service Operation <o:p></o:p></span></p>
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<tr style="page-break-inside:avoid;height:1.0pt">
<td width="139" valign="top" style="width:104.5pt;border:solid windowtext 1.0pt;border-top:none;padding:1.45pt 4.3pt 1.45pt 4.3pt;height:1.0pt">
<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB">Service version<o:p></o:p></span></p>
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<p class="MsoNormal" style="page-break-after:avoid"><span lang="EN-GB"><a href="#_Short_">UOctet</a><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right;page-break-after:avoid">
<span lang="EN-GB">Service version<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB">Is Error Message<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB"><a href="#_Boolean_">Boolean</a><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right"><span lang="EN-GB">‘True’ if this is an error message; else ‘False’<o:p></o:p></span></p>
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<tr style="page-break-inside:avoid;height:1.0pt">
<td width="139" valign="top" style="width:104.5pt;border:solid windowtext 1.0pt;border-top:none;padding:1.45pt 4.3pt 1.45pt 4.3pt;height:1.0pt">
<p class="MsoNormal"><span lang="EN-GB">Supplements<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB">List<NamedValue></span><span lang="EN-GB" style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="text-align:right"><span lang="EN-GB">Optional supplementary fields
<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This optimization also allows the <u>Fully Qualified Short Form Part</u> to be defined using a
<b>UInteger (4Bytes)</b> instead of a <b>ULong (8Bytes)</b>.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><b>From:</b> Area Number (UShort – 2B), Area Version (UShort – 2B), Service Number (UShort – 2B), SFP (Short – 2B)<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><b>To:</b> Area Number (UOctet – 1B), Area Version (UOctet – 1B), SFP (Short – 2B)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In terms of changes, this is easy to fix in the books, and also in the code.<o:p></o:p></p>
<p class="MsoNormal">Let me know if you disagree with this optimization.<o:p></o:p></p>
<p class="MsoNormal">If I receive no reply within the next 2 weeks, I will assume that you agree and I will update the book accordingly.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best regards,<o:p></o:p></p>
<p class="MsoNormal">César Coelho<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span lang="DE" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-ligatures:none">Dr. César Coelho</span></b><span lang="DE" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-ligatures:none"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-ligatures:none">CGI Deutschland B.V. & Co.
</span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-ligatures:none">KG | Space<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-ligatures:none">Mornewegstr. 30 | 64293 Darmstadt | Germany<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#A6A6A6;mso-ligatures:none">T: +49 173 54100 45 | email:
<a href="mailto:cesar.coelho@cgi.com">cesar.coelho@cgi.com</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:red;mso-ligatures:none"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="DE" style="font-size:8.0pt;color:#A6A6A6;mso-ligatures:none">Unsere Pflichtangaben gemäß § 35a GmbHG / §§ 161, 125a HGB finden Sie unter de.cgi.com/pflichtangaben.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="DE"><o:p> </o:p></span></p>
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