Re: third alternative (was RE: [Sip] RE: Identity after reinvite)

On Nov 18, 2004, at 3:46 PM, Peterson, Jon wrote:
>> One solution to this would be for for the biloxi.com server to act as 
>> a
>> b2bua, relaying the call to carol. Maybe that is a *model* to 
>> consider,
>> with hopes of finding a better implementation. That is also roughly 
>> the
>> model when a gateway is being used. We already know that in the 
>> gateway
>> case the connected party on the far side of the gateway can change, 
>> and
>> there are desires to convey that info.
>>
>
> (weep)
>
> Maybe we could at least consider redirection before we start 
> suggesting that
> this is a B2BUA problem.
>
Redirection is generally cleaner than retargeting, but does not satisfy 
the "Monica property". It may be that a B2BUA is inescapable in those 
cases anyway.

> I really think that the problem of mid-call changes in connected-party 
> is a
> very different case, and much more specialized than what we're 
> concerned
> with here. We're talking here about assuring the identity of the first 
> and
> second parties to a dialog at the time of dialog establishment. I'd 
> like to
> think that the ultimate solutions to the mid-call 'identity update' 
> sort of
> problems are more along the transfer/replaces line of thinking.
>
I tend to agree. It would be much cleaner if all 
identity/connected-party changes devolved to a flavor of transfer 
(except the Monica cases I mention above).

Dave.
> Jon Peterson
> NeuStar, Inc.
>
>> 	Paul
>>


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