Cheers
James
> -----Original Message-----
> From: Marc Linsner [mailto:mlinsner@cisco.com]
> Sent: Wednesday, 28 October 2009 8:19 AM
> To: Winterbottom, James
> Cc: ecrit@ietf.org
> Subject: Re: [Ecrit] FW: [Geopriv] Winterbottom-ecrit-direct considered
>
> James W.,
>
> On 10/27/09 3:53 PM, "Winterbottom, James" <James.Winterbottom@andrew.com>
> wrote:
>
> > Hi James,
> >
> > It is not unauthenticated, the device must have access to an Internet
> feed,
> > and that feed is always registered or authenticated in some fashion.
> >
> > One of the key proposals of this draft is that the calling device, and
> please
> > do not think phone, think computing device (which might be a game
> console)
> > does register with the ESRP. This relatively short-term registration is
> the
> > way in which call-back is attained. The registration can also be used by
> the
> > ESRP to check that the caller is in fact in the calling domain of the
> PSAP or
> > at a minimum where the point of presence in the access network is.
> >
>
> What is different in the registration process that allows "the ESRP to
> check
> that the caller is in fact in the calling domain of the PSAP" that can't
> happen via a SIP invite (with no registration)?
>
> Thanks,
>
> -Marc-
>
>
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