> -----Original Message-----
> From: ecrit-bounces@ietf.org [mailto:ecrit-bounces@ietf.org] On Behalf
> Of Winterbottom, James
> Sent: Wednesday, 28 October 2009 10:19 AM
> To: Marc Linsner
> Cc: ecrit@ietf.org
> Subject: Re: [Ecrit] FW: [Geopriv] Winterbottom-ecrit-direct considered
>
> I guess nothing, but it can be done in the registration. The primary
> advantage of the registration is to support call-back.
>
> 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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