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<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">Thanks Greg,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">I am fine with the answers to the points raised in the other email thread.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">There is just this point below that I am not fully convinced.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">So if I restate the note below:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">-when LEC report/demand is 0, we ignore the Demand/Query bit and the Query response bit.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">-when LEC report/demand is 1, we set Demand/Query to 0.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">So, how can we send a directive to actually change the parameters of the link with a Demand directive?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">If we set the Demand/Query to 0 (meaning “Demand”), and we set the LEC report/demand to 1, we would interpret the directive as a “LEC demand” according to the note below.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">If we set the Demand/Query to 0 (meaning “Demand”), and we set the LEC report/demand to 0, the note tells us to ignore the Demand/Query bit.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">This is why I would have thought that a single field with multiple bits, enumerating the different directive options (demand, query, LEC report, LEC demand), could be more “elegant”.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">Best regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">Stefano<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Kazz, Greg (US 312B) <greg.j.kazz@jpl.nasa.gov>
<br>
<b>Sent:</b> 25 June 2025 17:15<br>
<b>To:</b> Stefano Petri <Stefano.Petri@esa.int><br>
<b>Cc:</b> Kazz, Greg (US 312B) via SLS-SLP <sls-slp@mailman.ccsds.org><br>
<b>Subject:</b> E2.2.15 LEC Report/Demand Field<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="color:black">Hi Stefano again,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Please take a look at the update I made to Section 2.2.15 in the attached word document.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">I believe it addresses your concern about how to set the Demand/Query flag as well as the Query Response flag, when a partnered node is simply passing the LEC directive to the other node using it as a type of status
reporting between radios… or when one node demands the report from the partnered node i.e., a “demand” reporting.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">If you are OK with this formulation, then I will ask the Secretariat to update the draft 235.0-W book accordingly.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">thanks much,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Greg<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Below is the snipet:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">E2.2.15 LEC Report/Demand <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-top:12.0pt;text-align:justify;line-height:14.0pt">
<span style="font-family:"Times New Roman",serif;color:black">Bit 23 of the </span>
<span style="font-size:11.0pt;font-family:"Times New Roman",serif;color:black">LINK ESTABLISHMENT & CONTROL (LEC)
</span><span style="font-family:"Times New Roman",serif;color:black">directive tells how the LEC directive is used as a voluntary or demanded reporting mechanism. By setting this value to ‘0’, the values in the LEC directive are reported to the partnered radio.
In this case, both E2.2.5 Demand/Query Flag and E2.2.6 Query Response Flag are ignored. Conversely, by setting this value to ‘1’, a demand for these values is made to the partnered radio. In this case, E2.2.5 Demand/Query Flag is set to ‘0’ (Demand) and E2.2.6
Query Response flag is ignored.</span><span style="color:black"><o:p></o:p></span></p>
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<li class="MsoNormal" style="color:black;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l3 level1 lfo3">
‘0’ = Report LEC Values Only;<o:p></o:p></li></ol>
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<li class="MsoNormal" style="color:black;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level1 lfo6">
‘1’ = Demand LEC Values.<o:p></o:p></li></ol>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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