RE: Notes from Non-meeting

The three priorities identified in Marc's email are absolutely the position
of the National Emergency Number Association (which represents most of the
nations Public Safety providers).

                                                                                        
                    Marc Linsner
                    <mlinsner@cis To: "Rosen, Brian"
                    co.com> <Brian.Rosen@marconi.com>, "'Randy Bush'"
                                         <randy@psg.com>, Henning Schulzrinne
                    03/20/2002 <hgs@cs.columbia.edu>
                    12:26 PM cc: Adam Shostack
                                         <adam@zeroknowledge.com>,
                                         geopriv@mail.apps.ietf.org, (bcc: Nadine B.
                                         Abbott/Telcordia)
                                         Subject: RE: Notes from Non-meeting
                                                                                        

Using 'SOS' is the practical method! Attempting to authenticate a PSAP
could 'get in the way' of completing a call to a PSAP. One would not want
to be the responsible party for that authentication failure.

Lack of caller identity is going to be a problem for the PSAP. PSAPs want
in this priority:

1. Call completion regardless of adjunct info failures.
2. A callback number (caller identity).
3. The callers location.

-Marc Linsner-

-----Original Message-----
From: Rosen, Brian [mailto:Brian.Rosen@marconi.com]
Sent: Wednesday, March 20, 2002 12:06 PM
To: 'Randy Bush'; Henning Schulzrinne
Cc: Adam Shostack; geopriv@mail.apps.ietf.org
Subject: RE: Notes from Non-meeting

Getting the callers identity is a hard problem that is
the subject of current discussion in SIP and not relevant
here.

Authenticating the PSAP cryptographically is not
a practical approach. Doing it by addressing is
practical, and I assert acceptable in this use case.

Brian

> -----Original Message-----
> From: Randy Bush [mailto:randy@psg.com]
> Sent: Wednesday, March 20, 2002 11:23 AM
> To: Henning Schulzrinne
> Cc: Adam Shostack; Rosen, Brian; geopriv@mail.apps.ietf.org
> Subject: Re: Notes from Non-meeting
>
>
> > The problem is not authenticating the caller, but authenticating the
> > PSAP.
>
> i agree on the latter. i suspect the psap would like to get
> the caller's
> location if reasonably possible. i suspect it would also
> like to get the
> caller's identity, but not to check if they are authorized to call.
>
> randy
>
Received on Wed Mar 20 14:06:44 2002