Draft:  draft-ietf-sipping-presence-scaling-requirements-01
Reviewer: Hisham Khartabil [hisham.khartabil@gmail.com]
Review Date: Sept-18-2008
Review Deadline: Sept-3-2008
Status: WGLC (RAI/SIMPLE review)

Summary: On the right track


Comments:
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- The introduction fails to explain what interdomain scaling is. It also fails to explain the problem statement in detail. More text is required.
 
- Req-001 includes as a last sentence "No changes may be required of existing servers to interoperate". 
Firstly, this should be seperated into a new requirment. 
Secondly, I don't fully understand this requirement. Is it a MAY NOT or SHOULD NOT? 
My opinion is that it is not feasible to require that no modifications are to be made to existing 
servers and expect them to work with the solution. There may be changes needed at the server side.
 
- Req-002 should also be split into 2, one about functionality and the other about security. 
While the former can have a SHOULD NOT strength, I believe that latter should be a MUST NOT.
 
NIT
- Section 3. "In this sections lists" should be "This section lists".