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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Greg,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I agree with Gian Paolo. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>When our TM systems detect an Idle Packet (APID
set to 0x7FF) it discards it. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>From the TM Spec.<o:p></o:p></span></font></p>
<p class=Paragraph4 style='margin-top:12.0pt;text-align:justify'><b><font
size=3 color=black face="CJMPLN+TimesNewRoman,Bold"><span style='font-size:
11.5pt;color:black;font-weight:bold'>4.3.2.5 </span></font></b><font size=3
color=black face="CJMNDI+TimesNewRoman"><span style='font-size:11.5pt;
font-family:CJMNDI+TimesNewRoman;color:black'>Extracted Packets shall be
delivered to the users on the basis of the PVN in their header. Incomplete
Packets are not required to be delivered in cross support situations. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="CJMNDI+TimesNewRoman"><span
style='font-size:11.5pt;font-family:CJMNDI+TimesNewRoman;color:black'>NOTE .
Idle Packets are discarded. Data Fields that contain only Idle Data are also
discarded.</span></font><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>This states that the Idle Packet is
discarded and implies that there is no user data within the packet. There
probability isn’t any where in the standard stating that you can’t
put a secondary header in the Idle Packet, but this is implied as this packet
is thrown out. So quoting Gian Paolo it would be crazy to put any useful data
into the idle packet.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Matt.<o:p></o:p></span></font></p>
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<p style='margin-bottom:12.0pt'><font size=1 color=navy face=Arial><span
style='font-size:8.0pt;font-family:Arial;color:navy'>Matthew Cosby<br>
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<p><font size=1 color=navy face=Arial><span style='font-size:8.0pt;font-family:
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<p><font size=5 color="#339966" face=Webdings><span style='font-size:18.0pt;
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<p class=MsoNormal><b><font size=2 face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
sls-slp-bounces@mailman.ccsds.org [mailto:sls-slp-bounces@mailman.ccsds.org] <b><span
style='font-weight:bold'>On Behalf Of </span></b>Gian.Paolo.Calzolari@esa.int<br>
<b><span style='font-weight:bold'>Sent:</span></b> 03 March 2009 18:21<br>
<b><span style='font-weight:bold'>To:</span></b> Kazz, Greg J<br>
<b><span style='font-weight:bold'>Cc:</span></b> sls-slp@mailman.ccsds.org;
Takahiro Yamada; Ray,Timothy J. (GSFC-583.0); Jean-Luc.Gerner@esa.int;
sls-slp-bounces@mailman.ccsds.org; gilles.moury@cnes.fr; Greenberg,Edward<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [Sls-slp] JAXA RID
against OID Frame</span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><br>
<br>
</span></font><tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>"Kazz,
Greg J" <greg.j.kazz@jpl.nasa.gov> wrote on 03-03-2009 18:21:35:</span></font></tt><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><br>
<br>
<tt><font face="Courier New">> G.P.,</font></tt></span></font> <br>
<tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>> </span></font></tt>
<br>
<tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>> But a
Space Packet can contain a Secondary Header, which could </span></font></tt><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><br>
<tt><font face="Courier New">> contain useful data as well. So in that
sense, OID Packet also makes</font></tt><br>
<tt><font face="Courier New">> sense. In other words, discarding an
“Idle Packet” can have a </font></tt><br>
<tt><font face="Courier New">> drawback or unintended consequence. CCSDS
needs to use consistent </font></tt><br>
<tt><font face="Courier New">> terminology across the board and I think that
is what this JAXA rid </font></tt><br>
<tt><font face="Courier New">> is pointing out. I am looking forward to Marjorie’s
responses to </font></tt><br>
<tt><font face="Courier New">> those rids as well.</font></tt></span></font>
<br>
<tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>> </span></font></tt>
<br>
<tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>> thanks,</span></font></tt>
<br>
<tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>> </span></font></tt>
<br>
<tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>> Greg</span></font></tt>
<br>
<tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>> </span></font></tt>
<br>
<br>
<tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>Greg,</span></font></tt>
<br>
<tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>
The Frame has a structure linked to the Virtual Channel
and all frames on a VC have the secondary header (if this is used)
independently they are OID or not.</span></font></tt> <br>
<tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>Conversely
the Space Packet has a structure linked to the APID and a mission implementing
a Packet Secondary Header on Idle Packets would just be crazy. :-) In addition,
I think that, being the idle APID fixed, there is no chance for having a
Secondary header in an Idle Packet [this is TBC].</span></font></tt> <br>
<br>
<tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>Comments/confirmations
are welcome.</span></font></tt> <br>
<br>
<tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>Ciao</span></font></tt>
<br>
<br>
<tt><font size=2 face="Courier New"><span style='font-size:10.0pt'>Gian Paolo</span></font></tt><o:p></o:p></p>
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