Re: [Sip] Need for RPH in SIP Responses

Janet,

sorry for the tardy comments on the thread.  when I read the draft, a  
couple of other use cases outside of the GETS model came to mind that  
would seem to prompt a need for an R-P header in a SIP response.  In  
the land mobile radio arena, we have bridging architectures/ 
technologies like the ISSI that use SIP as a foundation to bridge  
autonomous subnets of P25 systems.  These tend to be resource  
constrained systems of multi-level precedence, and so having a  
corresponding R-P header in SIP responses would fold in nicely with  
what is being built today and planned for the near future.

outside of that, there are also some efforts to bridge ISSI with Push- 
to-talk over Cellular (PoC) with SIP, though this is quite preliminary  
so I don't know if I'd list this as another use case.  But in any  
event, I think it would be helpful if you could broaden the problem  
statement in your draft so that it is not strictly focused to just  
GETS.  Subsequent to this broader statement, you could then provide a  
more in-depth discussion of the GETS *example*.

also, is it your plan to progress your draft in the SIPPING WG given  
that it deals with a requirement?  I see its on the SIP agenda along  
with James' related draft, which is helpful, but I assume that further  
progress would be shifted to SIPPING.

-ken

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