FW: [Sois-tcoa] Time Access Service

[Scott Burleigh]

My comments on the original Red Book (somewhat belated) are nearly all 
editorial; I think the sense of the document is fine.

In 1.1, for the sake of consistency I think I would change "a local copy" 
to "access to a local source".  And in 1.2 I would say "Annex 1 describes 
how local time sources are implemented and how the master onboard time 
source is usually implemented in current spacecraft".

In Figure 1, I would change the word "Central" to "Master" in the label for 
the middle box.

The first paragraph of 2.2 seems redundant with the last paragraph of 2.1; 
any way to remedy this?

I'm a little concerned about the two optional service primitives: if 
"optional" means an implementer can choose to omit one or both, doesn't 
this defeat the purpose of the Recommendation?

In the second paragraph of 3.1.3, I think the term "frequency" should be 
replaced by "period" for consistency with the specification of the 
primitive (3.3.4).  Also, I think the word "issued" needs to be added to 
the end of the first sentence.

In the last paragraph of 3.3.6, to relate back to 1.3.2, I would insert the 
word "bound" after "error" in the last paragraph.

In section 3.4, I would remove both of the Frequencies and the Drift.  They 
are not mentioned anywhere else in the standard, so none of the service 
primitives depend on them.  This suggests to me that they are purely an 
implementation matter and therefore should not be in the service spec.

Scott