Re: [Ecrit] FW: [Geopriv] Winterbottom-ecrit-direct considered

[Marc Linsner <mlinsner at cisco.com>]

James,

Thanks, call-back was the only advantage I could come up with, so I wanted
to make sure I wasn't missing something.

-Marc-


On 10/27/09 7:18 PM, "Winterbottom, James" <James.Winterbottom at andrew.com>
wrote:

> 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 at cisco.com]
>> Sent: Wednesday, 28 October 2009 8:19 AM
>> To: Winterbottom, James
>> Cc: ecrit at ietf.org
>> Subject: Re: [Ecrit] FW: [Geopriv] Winterbottom-ecrit-direct considered
>> 
>> James W.,
>> 
>> On 10/27/09 3:53 PM, "Winterbottom, James" <James.Winterbottom at 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-
>> 
>> 
>