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<p class="MsoNormal">Dear Gilles and SLDS WG,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">SLP WG has a question regarding the application of the SDLS protocol to truncated USLP Transfer Frames.<o:p></o:p></p>
<p class="MsoNormal">These truncated frames are envisioned for very short length telecommands or forward link Proximity-1 link commanding. This frame type provides backward compatibility with TC hardware commands or immediate commands. These commands are typically
2 octets long. We envision the truncated USLP frame length to be between 8 and 32 octets.
<o:p></o:p></p>
<p class="MsoNormal">In that context, does it make sense for SDLS header and possibly SDLS trailer to apply to the USLP truncated frame.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The discussion of the proposed non-use of SDLS for truncated USLP frames is mentioned in Chapter 6, specifically in Section 6.3.2. The definition of the truncated USLP frame is in Annex G of the attached draft document<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The SLP WG did not think SDLS should be applicable to truncated USLP frames, but we would like your opinion on this matter.<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">Greg Kazz<o:p></o:p></p>
<p class="MsoNormal">Chair SLP WG<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">From: </span></b><span style="font-size:12.0pt;color:black">SLS-SLP <sls-slp-bounces@mailman.ccsds.org> on behalf of Matthew Cosby <Matt.Cosby@Goonhilly.org><br>
<b>Date: </b>Monday, October 26, 2020 at 9:27 AM<br>
<b>To: </b>"sls-slp@mailman.ccsds.org" <sls-slp@mailman.ccsds.org><br>
<b>Subject: </b>[EXTERNAL] [Sls-slp] Updated Book<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">All,<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Here is the updated book from the working group today.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Regards, Matt.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><b><span style="mso-fareast-language:EN-GB">Matthew Cosby</span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="mso-fareast-language:EN-GB">Chief Technology Officer
</span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="mso-fareast-language:EN-GB">Goonhilly Earth Station Ltd</span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span style="mso-fareast-language:EN-GB"><img width="801" height="87" style="width:8.3437in;height:.9062in" id="Picture_x0020_7" src="cid:image001.jpg@01D6AB85.0C72AB90"></span></b><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB"> </span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
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