Paul Kyzivat <pkyzi...@alum.mit.edu> writes:
> Another consideration is whether these are done using the same Call-ID. 
> (In the same pseudo-dialog.) I don't think it will generally make any 
> difference, but it may present issues if you are also requesting a 
> temporary gruu with the registration.

I haven't dug through the specifications.  But if they have the same
Call-ID, then the CSeq tells the order the REGISTERs are to have
effect.  If the network reorders them, the de-REGISTER will prevail
because it has a higher CSeq.

   A UA SHOULD use the same Call-ID for all registrations during a
   single boot cycle.

Dale
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