[Sip] Resource Priority Header namespaces

I read over the draft in last call requesting new RPH namespace assignments.
In and of itself it looks non-objectionable.  While I don't 
understand the need for that many name spaces, or those specific 
values, my first reaction is to say "okay" anyway.

However, I went and looked at RFC4412, which defines the header 
namespace registration.
That RFC calls for a standard track RFC for defining namespaces.
And the text is quite explicit that one should not create a 
multiplicity of namespaces, but should try to use existing spaces first.

So, unless we want to check RFC4412, it seems that the request for 32 
namespaces in
	draft-ietf-sip-rph-new-namespaces-00.txt
really needs more explanation / justification.

Yours,
Joel M. Halpern

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