Hi Andrew,

> Well, this is an "if" without "only then" so it doesn't tell us the
> meaning of Le being absent.  Additionally the whole passage is later
> invalidated in 11.2.2.2, so the SIM implementer really has all the
> possible options.

Hmm, I don't interpret it this way.  Le being absent means no response 
expected.  The '00' vs 'FF' is unclear, I agree there.

> 
> > The question really becomes, do we actually want a response and know what
> > to do with it?
> 
> We only use envelope in CBS data download right now which expects no
> response, we could indicate that in a parameter.

I suggest that we mention the Le confusion in the comment block and take out 
Le altogether since we can't do anything useful with the response data yet.  
Once we're ready to implement this properly, then we can add Le and figure out 
wheter 'FF' or '00' or something else is required.

For a hint of what the response can be used for, see 3GPP 31.124.  It seems 
the response from the SIM has to be set into an RP-ERROR message and given 
back to the network...

Regards,
-Denis
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