Re: [dispatch] Charter Proposal: Verification Involving PSTN Reachability (VIPR)

Should there be a set of deliverables  what this WG is intending for? Or the
draft mentioned are actually the deliverables for this WG.

>The goal of this working group is to allows people to use SIP to federate
over the the internet while still using phone numbers to identify the person
they wish to communicate with.

I would suggest to emphasize(for clarity) that the federation being refered
here is the *across-domain* federation (although, some wise guys can figure
it out with *over the interent* :-))

Does charter have to say that, some extensions(headers, option-tag, ...) to
SIP are invisioned e.g for transfering a piece-of-information meant to
authorize particular domain to contact a particuar phone number?

Regards
Deepanshu

-----Original Message-----
From: dispatch-bounces@ietf.org [mailto:dispatch-bounces@ietf.org] On Behalf
Of Cullen Jennings
Sent: 2010年6月2日 0:55
To: DISPATCH list
Subject: [dispatch] Charter Proposal: Verification Involving PSTN
Reachability (VIPR)

I've been talking to a lot of people about the VIPR drafts  - here is a
first cut of a proposal for a WG that could do this. I'm sure the charter
proposal needs a bunch of work but I wanted to get the discussion rolling on
the list. 

Thanks, Cullen 

(PS - this is sent in my individual contributor role. Take all my posts
about VIPR to be in my individual role not my co-chair role)

-------------------------------------------------------

ViPR Charter Proposal (Version 0)

WG Name:  Verification Involving PSTN Reachability (VIPR)

There are two globally deployed address spaces for communications that more
than a billion people use on a daily basis. They are phone numbers and DNS
rooted address such as web servers and email addresses. The federation
design of SIP is primarily designed for email style addresses yet a large
percentage of SIP deployments primarily use phone numbers for identifying
users. The goal of this working group is to allows people to use SIP to
federate over the the internet while still using phone numbers to identify
the person they wish to communicate with. 

The VIPR WG will address this problem by developing a peer to peer based
approach to finding SIP domains that claim to be responsible for a given
phone number and the WG will design validation protocols to ensure a
reasonable likelihood that a given domain actually is responsible for the
phone number. One initial validation protocol will be based on a domain
being able to prove it received a particular phone call over the PSTN based
on both sides knowing the start and stop times of that call. Other
validation schemes, such as examining fingerprints or watermarking of PSTN
media, to show that a domain received a particular PSTN phone call may be
considered by the working group. To help mitigate SPAM over SIP issues, the
WG will define an token based authorization scheme so that domain using SIP
to federate can choose to check that incoming SIP calls are from a domain
that successfully validated a phone number. 

The problem statement and some possible starting points for solutions are
further desired in the following internet drafts which shall form the bases
of the WG documents:
draft-rosenberg-dispatch-vipr-overview
draft-rosenberg-dispatch-vipr-reload-usage
draft-rosenberg-dispatch-vipr-pvp
draft-rosenberg-dispatch-vipr-sip-antispam

The working group will carefully coordinate with the security area, O&M
area, as well as the appropriate RAI WG including sipcore and p2psip. 

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