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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Georgia",serif">Dear Holger,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Georgia",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Georgia",serif">Thank you very much for reaching out to the MOIMS AD and having the conversation. I think something more appropriate can be crafted and I plan to address this further early next
week. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Georgia",serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Georgia",serif">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Georgia",serif">-Erik<o:p></o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:11.0pt">From:</span></b><span style="font-size:11.0pt"> Holger Dreihahn <Holger.Dreihahn@esa.int>
<br>
<b>Sent:</b> Friday, May 20, 2022 6:26<br>
<b>To:</b> Eddy, Wesley M. (GSFC-580.0)[MTI SYSTEMS, INC.] <wesley.m.eddy@nasa.gov><br>
<b>Cc:</b> Barkley, Erik J (US 3970) <erik.j.barkley@jpl.nasa.gov>; css-csts@mailman.ccsds.org<br>
<b>Subject:</b> [EXTERNAL] PID Resolution for the FoRm Magenta Book<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dear Wes, Erik and CSTS Colleagues,<o:p></o:p></p>
<p class="MsoNormal">I had a discussion with the MOIMS AD to sort out the 2 conditions he raised for the FRM Magenta Book. Would you as Book Captain, CSS Area Director or CSTS WG member agree to the following addition (in red) for section 1.4 Applicability:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">------------------------------------------------------------------------------------<o:p></o:p></p>
<h2 style="margin-left:0in;text-indent:0in;mso-list:none"><a name="_Toc88205257">1.4 Applicability</a><o:p></o:p></h2>
<p class="MsoNormal">This Recommended Practice is applicable to ESLT-provided cross support services that are based on CCSDS Cross Support Transfer Services and Cross Support Service Management that model functionality in terms of Functional Resources.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><i><span style="color:red">If the Functional Resources would be used in a different context than an ESLT, e.g. in on-board scenarios, the relevant CCSDS recommendations to exchange the information defined by Functional Resources shall be
used. For on-board scenarios that would be MO M&C services as per [XYZ]. <o:p></o:p></span></i></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The concepts and specifications of Functional Resources, Functional Resource Sets, and Functional Resource Strata may by applicable to other node types, but such applicability must be determined on an implementation basis […]<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am not particular happy about the addition, as the applicability and scope of the current book is clearly only for ESLT, CSTSs and CSSM standards – but before entering lengthy discussions and delaying the book, I could accept it. There
are in fact discussions to use FRs for on-board communication functions and yes, it is not wrong to say that relevant CCSDS standards should be used then. It may just be a bit too early to reflect on that.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Please let me know your opinion. BTW, no feedback is rated as violent agreement
<span style="font-family:"Segoe UI Emoji",sans-serif">😉</span>. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">FYI: In the attached document I marked with comments the places, which in my mind already address the 2 MOIMS PIDs.
<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">Holger<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">P.S. Here is the MOIMS AD PID:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">1) Section 1.3 "Scope" states that the scope is <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">limited to IOAG service cat 1 and 2.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">Then Section 2.2.1 "FUNCTIONAL RESOURCES AS <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">ABSTRACTIONS OF REAL RESOURCES" reads:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">"FRs are abstract representations of the <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">functionality needed to provide space <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">communication and tracking services, defined at a <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">level of granularity sufficient to specify the <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">configuration parameters, monitored parameters, <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">and notifiable events associated with that functionality.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">FRs exist to represent such information as it <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">applies to a cross support interface. If a <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">processing function does not have unique <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">monitored parameters, notifiable events, or any <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">configuration parameters that need to be set <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">(possibly through configuration profiles), <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">queried, or reconfigured (via real-time control <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">directives), then it does not have an FR to <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">represent it. It should be noted that only one of <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">these facets needs to be present in order for a <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">function to need to be represented by an FR."<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="color:black;mso-fareast-language:EN-GB">It should be clarified in the text that the FRs <o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="color:black;mso-fareast-language:EN-GB">shall be limited to hw/sw that is immediately and <o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="color:black;mso-fareast-language:EN-GB">directly related to communication</span></b><span style="color:black;mso-fareast-language:EN-GB"> and shall not <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">be used for abstract representation of other <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">devices onboard or on the ground, e.g. a Camera <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">or a Gyro.... for such devices MO services should <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">be the prime choice for abstract representation <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">of the interface. This is consistent with the so called "London agreement".<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">2) It should be also clarified in the text <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">(Section 1.3 Scope?) that, when it goes
<b>on-board <o:p></o:p></b></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">even for the RF elements, the aspects of TM/TC <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">and operations in general should be handled <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">through MO M&C services rather than using FRM for <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">monitored parameters, notifiable events, or any <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">configuration of those devices. This is <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">consistent with CCSDS 371.0-G-1 APPLICATION AND SUPPORT LAYER ARCHITECTURE<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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