> -----Original Message-----
> From: Dale Worley [mailto:[EMAIL PROTECTED]
> Sent: Thursday, December 04, 2008 10:18 PM
>
> I think you're getting into a lot of trouble with this.  For one thing,
> if a request forks, it creates multiple dialogs.  If the UAC inserted a
> session-id, all those dialogs share the same session-id.  Previously,
> that situation is disambiguated by identifying a dialog by giving
> call-id/from-tag/to-tag.  But session-id alone is ambiguous, so it can't
> be used to replace the current dialog identifiers.  And since we assume
> that the tags will be changed by B2BUAs, session-id/from-tag/to-tag
> won't work at all.

No - read the (latest) draft.  The to-tag is in fact also used, to 
dis-ambiguate these things.  And I note that this would mean it can't be 
changed.  I'm on the fence whether to create a surrogate for that as well. (ugh)

-hadriel
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