Re: [Sipping] I-D ACTION:draft-ietf-sipping-dialogusage-02.txt

[Paul Kyzivat <pkyzivat at cisco.com>]

Christer Holmberg (JO/LMF) wrote:

> > > FIFTH, chapter 1 says that a dialog can contain only one Invute  
> > > dialog usage. But, as we agreed an Invite usage can not be created  
> > > within an existing dialog (no matter what type of usages already  
> > > exist within that dialog), i.e. an Invite dialog usage can ONLY be  
> > > created when the dialog itself is created, and one dialog can ONLY  
> > > contain one Invite dialog usage. So, I think we need text to  
> > > clarify that. It may sound obvious, but to avoid questions on the  
> > > list in the future...
> > IIRC, the text that talks about a dialog containing only one invite  
> > usage is exploring/explaining the situation we have now, where you  
> > _can_ send an INVITE inside a subscribe dialog.
>
> [CHH] Ok. But, in that case I think we need to clarify that the INVITE shall not be regarded as a re-INVITE, because it WILL contain a To tag.

Yeah, I suppose so. Its really just like SUBSCRIBE refreshes: its a 
refresh because there is a matching usage. If no matching usage then it 
is a usage-establishing request. Its actually a little simpler for 
INVITE because there is at most one invite-usage per dialog.

	Paul

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