<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Segoe Script";
panose-1:3 11 5 4 2 0 0 0 0 3;}
@font-face
{font-family:Barlow;}
@font-face
{font-family:TimesNewRomanPSMT;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
margin-top:0cm;
margin-right:0cm;
margin-bottom:0cm;
margin-left:36.0pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:73357670;
mso-list-type:hybrid;
mso-list-template-ids:-849462130 -873149320 67698691 67698693 67698689 67698691 67698693 67698689 67698691 67698693;}
@list l0:level1
{mso-level-start-at:0;
mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Symbol;
mso-fareast-font-family:Calibri;
mso-bidi-font-family:"Times New Roman";}
@list l0:level2
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:"Courier New";}
@list l0:level3
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Wingdings;}
@list l0:level4
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Symbol;}
@list l0:level5
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:"Courier New";}
@list l0:level6
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Wingdings;}
@list l0:level7
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Symbol;}
@list l0:level8
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:"Courier New";}
@list l0:level9
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Wingdings;}
ol
{margin-bottom:0cm;}
ul
{margin-bottom:0cm;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-GB" link="#0563C1" vlink="#954F72" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Dear Andy,<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 am always happy to see more people using the standard (and actually using features I have not seen being used in operations: SFO I would hope to see replaced by CFDP over Bundle Protocol in the
future and proxy operations are typically replaced by mission/agency specific commanding outside CFDP).<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">Regarding your question, my interpretation (and implementation) is that ‘one or more’ means ‘one or more TVL’ and not ‘multiple messages in a single TVL’ (slightly less efficient but much easier
to parse).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">(The Green Book is not normative and may contain some mistakes.)<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">So, if nobody objects, we should clarify this in the upcoming pink sheets to the standard. Would the formulation
<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" style="text-autospace:none"><span style="font-size:12.0pt;font-family:TimesNewRomanPSMT">One or more … messages may be optionally included and<b><span style="color:red"> each
</span></b>shall be constructed as indicated in …</span><span style="mso-fareast-language:EN-US"><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">be clear enough?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Felix<o:p></o:p></p>
</div>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><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:36.0pt"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Andy Willms <AWillms@blueorigin.com>
<br>
<b>Sent:</b> 28 February 2023 20:44<br>
<b>To:</b> sis-cfdpv1@mailman.ccsds.org; Felix Flentge <Felix.Flentge@esa.int>; dstanton@keltik.co.uk<br>
<b>Cc:</b> Sergey Savelyev <ssavelyev@blueorigin.com><br>
<b>Subject:</b> Blue Origin -- CFDP Question<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US">Greetings!<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US">While reading </span>
<a href="https://eur05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpublic.ccsds.org%2FPubs%2F727x0b5.pdf&data=05%7C01%7CFelix.Flentge%40esa.int%7Cce5078e443f340ead37e08db19c43ea1%7C9a5cacd02bef4dd7ac5c7ebe1f54f495%7C0%7C0%7C638132102886083693%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=Z1%2FETNTTl7c2pAv8fQAK50d9PkaffpdtC6g8jUETcfg%3D&reserved=0" target="_blank"><span lang="EN-US" style="color:#212529">CCSDS
727.0-B-5</span></a><span lang="EN-US"> and </span><a href="https://eur05.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpublic.ccsds.org%2FPubs%2F720x2g4.pdf&data=05%7C01%7CFelix.Flentge%40esa.int%7Cce5078e443f340ead37e08db19c43ea1%7C9a5cacd02bef4dd7ac5c7ebe1f54f495%7C0%7C0%7C638132102886083693%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=2KNxfB74ZEn9v1jglzzF61%2BAuJ903JcKOpVwiAxDXkw%3D&reserved=0" target="_blank"><span lang="EN-US" style="color:#212529">CCSDS
720.2-G-4</span></a><span lang="EN-US"> I noticed what might be a typo/ambiguity in the document(s) and was hoping to get some clarification.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US">Based on section 3.7.2 in the green book a SFO Message to User can contain multiple ‘Msgs to User’. That is to say, a single user message TLV can contain one or more reserved user messages.
The blue book seems to convey this behavior in section B.2.4.3 with the wording “One or more SFO Messages to User may be optionally included…”:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><img border="0" width="448" height="369" style="width:4.6666in;height:3.8437in" id="Picture_x0020_2" src="cid:image002.png@01D94D24.B30BD9C0"><img border="0" width="1102" height="370" style="width:11.4791in;height:3.8541in" id="Picture_x0020_3" src="cid:image003.png@01D94D24.B30BD9C0"></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US">On the other hand ‘Proxy Message to User’ does not seem to indicate that in section 3.2.2 of the green book, but the same wordage is used in section 6.2.3.3 of the blue book:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><img border="0" width="490" height="397" style="width:5.1041in;height:4.1354in" id="Picture_x0020_4" src="cid:image004.png@01D94D24.B30BD9C0"><img border="0" width="1076" height="385" style="width:11.2083in;height:4.0104in" id="Picture_x0020_5" src="cid:image005.png@01D94D24.B30BD9C0"></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><b><u><span lang="EN-US">Which leads to my question, is the wording “one or more” for the following sections in the blue book describing the existence of one or more TLVs in a given PDU or the existence of one
or more reserved messages in that single TLV?<o:p></o:p></span></u></b></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2">
<![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Section 6.2.3.3<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2">
<![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Section 6.2.3.4<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2">
<![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Section 6.2.3.5<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2">
<![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Section 6.2.5.3<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2">
<![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Section B2.4.3<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2">
<![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Section B2.4.4<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2">
<![if !supportLists]><span lang="EN-US" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Section B2.4.5<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US">Perhaps asked another way, assuming I wanted to set 3 fault handler overrides could that be done with the following structure<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><img border="0" width="1200" height="318" style="width:12.5in;height:3.3125in" id="Picture_x0020_1" src="cid:image007.png@01D94D24.B30BD9C0"></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US">Or would I need to send three separate TLVs to affect the desired behavior?<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><img border="0" width="915" height="926" style="width:9.5312in;height:9.6458in" id="Picture_x0020_6" src="cid:image008.png@01D94D24.B30BD9C0"></span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US">Thank you for any help you can provide!!<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><b><span lang="EN-US" style="font-size:12.0pt;font-family:"Segoe Script";color:#1F497D">Andy Willms<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:9.0pt;font-family:Barlow;color:#1F497D">AERS SW Applications Engineer III<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><b><span lang="EN-US" style="font-size:9.0pt;font-family:Barlow;color:#1F497D">Blue Origin -</span></b><b><span lang="EN-US" style="font-size:9.0pt;font-family:Barlow">
<span style="color:#1F497D">Orbital Launch Site</span></span></b><span lang="EN-US" style="font-size:9.0pt;font-family:Barlow;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:9.0pt;font-family:Barlow;color:#1F497D">8082 Space Commerce Way<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:9.0pt;font-family:Barlow;color:#1F497D">Merritt Island, FL 32953
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-size:9.0pt;font-family:Barlow;color:#1F497D">(C): 716-213-8502<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
</div>
This message is intended only for the recipient(s) named above. It may contain proprietary information and/or protected content. Any unauthorised disclosure, use, retention or dissemination is prohibited. If you have received this e-mail in error, please notify
the sender immediately. ESA applies appropriate organisational measures to protect personal data, in case of data privacy queries, please contact the ESA Data Protection Officer (dpo@esa.int).
</body>
</html>