Re: [sipcore] About SUBSCRIBE method's performance and Out-of-Dialog notification suggestion:

[[e-mail]]

Dale and Paul,

> > I suspect that the question is dialog state maintained in 
> intermediate elements, as many SIP systems coming from traditional 
> telco companies implement intermediate elements as B2BUAs, and often
> have up to a dozen B2BUAs in what would be expected in SIP to be a 
> single dialog.  I expect Gao will clarify the question when his day 
arrives.

[For Dale] I think it is about both, that is intermediate elements and the 
UAC/UAS.
 
> If this is the issue, then it just points out the obvious - that there 
> are consequences to using B2BUAs rather than proxies. If it hurts, don't 

> do it.

[For Paul] I think it is meaningful in cases that intermediate elements 
are defined B2BUA/Stateful(by some Network Architecture) or demanded 
B2BUA/Stateful(by users/operators).

Thanks,

Gao


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