[Sls-slp] CCSDS Order of Processing for Applying SDLS to Telecommand (TC SDLP)

Kazz, Greg J (US 312B) greg.j.kazz at jpl.nasa.gov
Fri Mar 26 17:22:18 UTC 2021

Dear SLP and SDLS WG members,

Attached is a word document containing what I believe is the correct end to end order of processing of the functions of the Telecommand Space Data Link Protocol using SDLS.
I am looking forward to your comments concerning two points:

  1.  Are the functions listed sequentially correct ? In other words, are the functions in the correct order given CCSDS 355.0 (SDLS BB) and CCSDS 232.0 (TC SDLP BB). I believe so, but I’d like your confirmation.
  2.  Would it be appropriate to add the “order of processing for applying SDLS to Telecommand (TC SDLP) to CCSDS 350.5 SDLP GB ?

On my side of the Atlantic, engineers from several missions I work with seem to be unclear (based upon my conversations with them) about the “end-to-end” sequential order of processing of Telecommand SDLP with the ApplySDLS function. Perhaps because SDLS and the Extended Procedures are new to them, but perhaps CCSDS could be more explicit by adding this information to CCSDS 350.5 SDLP GB.

Best regards,

Greg Kazz
Principal Engineer
Technical Group Supervisor,
Jet Propulsion Laboratory
4800 Oak Grove Dr., M/S 301-490
Pasadena, CA 91109
1+(818)393 6529(voice)
1+(818)393 6871(fax)
email: greg.j.kazz at jpl.nasa.gov

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