Re: [RFC 4235 & draft-kuthan-sip-derive] 481 "Call doesn't exist" for initial SUBSCRIBE ?

"Iñaki Baz Castillo" <[email protected]>
Newsgroups gmane.ietf.sip
Message-ID <[email protected]>
2008/11/13 Paul Kyzivat <[email protected]>:

> I understand the reasoning behind 481 but I am a *bit* troubled by it. It is
> a distinct semantic for 481, though one that is unambiguous. But 481 already
> has three distinct meanings, so adding another doesn't seem like a great
> idea.

I agree, imagine if you sends such a SUBSCRIBE but as refresh
SUBSCRIBE (in-dialog request), and you get 481. What does it mean?:

a) The current SUBSCRIBE dialog doesn't exist anymore.
b) The indicated dialog in the "Event: dialog;call_id=xxx,to_tag=xxx"
doesn't exist.

?

-- 
Iñaki Baz Castillo
<[email protected]>
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