<span style=" font-size:10pt;font-family:sans-serif">Dear Greg, </span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">Thank you for
sharing the document. </span>
<br><span style=" font-size:10pt;font-family:sans-serif">After a preliminary
quick coordination within ESA, we would prefer to align the deadline for
providing comments with the one set-up within C&S and RFM WGs (i.e.
4 September 2020). </span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">Best regards</span>
<br><span style=" font-size:10pt;font-family:sans-serif">Marco Rovatti</span>
<br>
<br>
<br>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">From:
</span><span style=" font-size:9pt;font-family:sans-serif">"Kazz,
Greg J\(US 312B\) via SLS-SLP" <sls-slp@mailman.ccsds.org></span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">To:
</span><span style=" font-size:9pt;font-family:sans-serif">"Kazz,
Greg J (US 312B) via SLS-SLP" <sls-slp@mailman.ccsds.org></span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Cc:
</span><span style=" font-size:9pt;font-family:sans-serif">"Enrico.Vassallo@esa.int"
<Enrico.Vassallo@esa.int>, "Gian.Paolo.Calzolari@esa.int"
<Gian.Paolo.Calzolari@esa.int></span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Date:
</span><span style=" font-size:9pt;font-family:sans-serif">19/05/2020
18:31</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Subject:
</span><span style=" font-size:9pt;font-family:sans-serif">[Sls-slp]
FW: [EXTERNAL] Fw: CCSDS RFM WG Spring meeting - comments received on DDOR
inputs - status as of 6 April - C&S proposal</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Sent
by: </span><span style=" font-size:9pt;font-family:sans-serif">"SLS-SLP"
<sls-slp-bounces@mailman.ccsds.org></span>
<br>
<hr noshade>
<br>
<br>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri">Dear
SLP WG,</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri">Attached
please find a Word document that contains proposed changes to the Shift
register CRC diagrams in the AOS, TM, USLP, and Prox-1 CRC Space Data Link
Protocol blue books.</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri">These
changes are proposed by NASA (see SLS_CS action item below). Please take
some time to review the proposed changes and provide me with your comments.
I would appreciate hearing back from you by the end of May if at all possible
concerning those proposed changes to our diagrams.</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri">Best
regards,</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri">Greg</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri">Chairman
SLP WG</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Calibri"><b>From:
</b>"Enrico.Vassallo@esa.int" <Enrico.Vassallo@esa.int><b><br>
Date: </b>Tuesday, May 19, 2020 at 2:49 AM<b><br>
To: </b>"sls-rfm@mailman.ccsds.org" <sls-rfm@mailman.ccsds.org>,
"Border, James S (US 335D)" <james.s.border@jpl.nasa.gov>,
"Volk, Christopher P (US 335D)" <christopher.p.volk@jpl.nasa.gov>,
"Kazz, Greg J (US 312B)" <greg.j.kazz@jpl.nasa.gov>, "Massimo.Bertinelli@esa.int"
<Massimo.Bertinelli@esa.int><b><br>
Subject: </b>[EXTERNAL] Fw: CCSDS RFM WG Spring meeting - comments received
on DDOR inputs - status as of 6 April - C&S proposal</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;font-family:Arial">Dear
All,</span><span style=" font-size:11pt;font-family:Calibri"> <br>
</span><span style=" font-size:10pt;font-family:Arial"><br>
I have not received any negative comments concerning the suggested way
forward from April 6, which is therefore agreed by both RFM and DDOR WGs.</span><span style=" font-size:11pt;font-family:Calibri">
<br>
</span><span style=" font-size:10pt;font-family:Arial"><br>
Meanwhile, C&S WG discussed CS_20-03 and tentatively (minutes are still
draft) agreed on the following action:</span><span style=" font-size:11pt;font-family:Calibri">
</span><span style=" font-size:14pt;font-family:Georgia"><b><br>
SLS-CS_20-03(PN shift registers, NASA)</b></span><span style=" font-size:11pt;font-family:Calibri">
</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:12pt;font-family:Georgia">NASA
presented a proposal for the unification of the representation of the polynomial
and diagrams representing PN shift registers in different CCSDS books (affecting
also other WGs, e.g. RFM)</span><span style=" font-size:11pt;font-family:Calibri">
</span><span style=" font-size:12pt;font-family:Georgia"><br>
AI_20_04 was given to the WG to report about the proposal, the possible
need to have a similar standard representation and, in case, the preferred
way forward. September was set as deadline for the action.</span><span style=" font-size:11pt;font-family:Calibri">
<br>
</span><span style=" font-size:10pt;font-family:Arial"><br>
I would suggest that we also agree on a similar action for the RFM WG with
the same deadline. September would be compatible with the DDOR recommendation(s)
agency review cycle.</span><span style=" font-size:11pt;font-family:Calibri">
<br>
</span><span style=" font-size:10pt;font-family:Arial"><br>
If I do not hear from you otherwise by Friday, I will enter such action
in the draft minutes of the meeting held by correspondence.</span><span style=" font-size:11pt;font-family:Calibri">
<br>
</span><span style=" font-size:10pt;font-family:Arial"><br>
Incidentally, I would like to alert Greg that the SLP group should have
a look at this NASA's input since it also proposes changes to 732.0-B-3
and 732.1-B-1, which I believe are under SLP WG purview. I attached
the input again for SLP convenience.</span><span style=" font-size:11pt;font-family:Calibri">
<br>
</span><span style=" font-size:10pt;font-family:Arial"><br>
Regards, Enrico</span><span style=" font-size:11pt;font-family:Calibri">
</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;font-family:Courier New"> [attachment
"SLS-CS_20-03 CCSDS books with PN patterns 4-19-20.docx" deleted
by Marco Rovatti/estec/ESA] </span></p>
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