[CESG] "User Services" // SLS strategic goal 3 change

[Gian.Paolo.Calzolari at esa.int]

Indeed!



From:   "Shames, Peter M (312B)" <peter.m.shames at jpl.nasa.gov>
To:     "Gian.Paolo.Calzolari at esa.int" <Gian.Paolo.Calzolari at esa.int>
Cc:     CCSDS Engineering Steering Group - CESG Exec 
<cesg at mailman.ccsds.org>, "Margherita.di.Giulio at esa.int" 
<Margherita.di.Giulio at esa.int>, "Tai, Wallace S (9000)" 
<wallace.s.tai at jpl.nasa.gov>, Gilles Moury <Gilles.Moury at cnes.fr>, "Kazz, 
Greg J (312B)" <greg.j.kazz at jpl.nasa.gov>, Matthew Cosby 
<matthew.cosby at goonhilly.org>
Date:   16/04/2018 23:29
Subject:        Re: "User Services"  // SLS strategic goal 3 change



Hi Gippo,
 
This looks good to me.   But don't you want these to be "efficient and 
inter-operable"
 
Thanks, Peter
 
 
From: Gian Paolo Calzolari <Gian.Paolo.Calzolari at esa.int>
Date: Monday, April 16, 2018 at 12:30 PM
To: Peter Shames <peter.m.shames at jpl.nasa.gov>
Cc: CCSDS Engineering Steering Group - CESG Exec <cesg at mailman.ccsds.org>, 
"Margherita.di.Giulio at esa.int" <Margherita.di.Giulio at esa.int>, Wallace Tai 
<wallace.s.tai at jpl.nasa.gov>, Gilles Moury <Gilles.Moury at cnes.fr>, Greg 
Kazz <greg.j.kazz at jpl.nasa.gov>, Matthew Cosby 
<matthew.cosby at goonhilly.org>
Subject: Re: "User Services" // SLS strategic goal 3 change
 
Peter, 
        after quick SLS discussion, we decided that we are going to change 
it to: 
To provide efficient and operable space data link protocols and related 
interfaces to space link transfer services (for e.g. Space Packet 
Protocol, Encapsulation Service, IP over CCSDS)    capable of satisfying 
the needs of current and future missions; 


Regards 

Gian Paolo 



From:        "Shames, Peter M (312B)" <peter.m.shames at jpl.nasa.gov> 
To:        Gian Paolo Calzolari <Gian.Paolo.Calzolari at esa.int> 
Cc:        "Margherita.di.Giulio at esa.int" <Margherita.di.Giulio at esa.int>, 
"Tai, Wallace S (9000)" <wallace.s.tai at jpl.nasa.gov>, "CCSDS Engineering 
Steering Group - CESG Exec" <cesg at mailman.ccsds.org> 
Date:        16/04/2018 16:09 
Subject:        "User Services" 

 
Hi Gippo,
 
My suggestion is that you change "user services" on that last slide to 
something like "link layer interface and adaptation".  I do not believe 
that any of the things that SLS addresses are in any sense "user 
services".  But all of these SPP, Encap, IP over CCSDS are definitely 
interfaces to the link layer or adaptations to the link layer.
 
And yes, I do know that we talk, in the abstract, about service access 
points on all of our layers, which is where the "provided services" are 
exposed.  This is ISO speak.   But these are not really user services and 
to characterize them as such is somewhat confusing and also is outside the 
charter of SLS in general.
 
Thanks, Peter
 
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This message is sent for information and/or discussion purposes only.
It shall neither be binding nor construed as constituting a commitment for ESA.
It is intended only for the recipient(s) named above.
It may contain proprietary information and/or protected content.
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