[Css-csts] Updated FF-CSTS package on CWE

[John Pietras]

CSTSWG colleagues ---
Many thanks to Wolfgang for his detailed review of the draft Red -2/candidate Blue-1 FF-CSTS book, and to Jason for test-compiling the ASN.1 modules several times to debug their content.

Wolfgang picked up several typos which have now been fixed. Wolfgang also expressed a concern about the justification for pushing responsibility for generating repeated CLTUs from a group of frames from the TC Sync and Channel Coding layer (as it is formally specified in the TC Space Data Link Protocol and TC Sync and Channel Coding blue books) up to the Space Data Link Protocol as "the way it's currently done for F-CLTU and FSP". Wolfgang correctly points out that the F-CLTU service itself is unaware of repetition: any repetition of CLTUs is done by the F-CLTU service user. I have changed the wording of I2.3.4 to (I hope) make this clear. I also realized that the description of repetition processing was incorrect for variable-length USLP frames, and so I4.3.4 has been similarly updated (with adjustments for the fact that USLP s constrained to single-frame CLTUs). Finally, G2.2.4 was a fragment of a "requirement" for repetition processing that I subsequently realized was not needed (see the disposition of pseudo-RID JP-2) but I had failed to delete the text. That fragment - G2.2.4 - has now been deleted.

The zip file at
https://cwe.ccsds.org/css/docs/CSS-CSTS/CWE%20Private/Future%20Services%20using%20Toolkit/Forward%20Frame%20CSTS/ForwardFrame-CSTS-922x3r2-190701.zip
contains (a) the updated FF-CSTS book, (b) the updated RID resolutions (updated with changes in the resolution of pseudo-RID JP-2), and (c) the updated text file containing the successfully-compiled ASN.1 modules.

I look forward to talking with you next Tuesday.

Best regards,
John
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