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

["WORLEY, Dale R (Dale)" <[e-mail]>]

I've improved the wording in various places and carefully removed any presumptions regarding the specific solution to be delivered:

ViPR Charter Proposal (a revision)

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:  E.164 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 allow 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 one or more
peer-to-peer based approaches to determining and validating the SIP
URI(s) that are equivalent to a given phone number, without requiring
reference to a global, accurate database.

One approach to be considered 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.  This approach is
described in:

draft-rosenberg-dispatch-vipr-overview
draft-rosenberg-dispatch-vipr-reload-usage
draft-rosenberg-dispatch-vipr-pvp
draft-rosenberg-dispatch-vipr-sip-antispam

Other validation techniques (such as examining fingerprints or
watermarking of PSTN media) may be considered by the working group.

To help mitigate SPAM over SIP issues, the WG also define one or more
authorization schemes allowing a recipient to verify that an
incoming SIP call is from a source that has previously executed a
validation protocol with the recipient.

The working group will carefully coordinate with the security area,
O&M area, and the appropriate RAI WGs (including sipcore and p2psip).

Dale