I-D Action:draft-rosenberg-dispatch-vipr-overview-02.txt

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A New Internet-Draft is available from the on-line Internet-Drafts directories.

	Title           : Verification Involving PSTN Reachability: Requirements and Architecture Overview
	Author(s)       : J. Rosenberg, C. Jennings
	Filename        : draft-rosenberg-dispatch-vipr-overview-02.txt
	Pages           : 41
	Date            : 2010-03-07

The Session Initiation Protocol (SIP) has seen widespread deployment
within individual domains, typically supporting voice and video
communications.  Though it was designed from the outset to support
inter-domain federation over the public Internet, such federation has
not materialized.  The primary reasons for this are the complexities
of inter-domain phone number routing and concerns over security.
This document reviews this problem space, outlines requirements, and
then describes a new model and technique for inter-domain federation
with SIP, called Verification Involving PSTN Reachability (ViPR).
ViPR addresses the problems that have prevented inter-domain
federation over the Internet.  It provides fully distributed inter-
domain routing for phone numbers, authorized mappings from phone
numbers to domains, a new technique for automated VOIP anti-spam, and
privacy of number ownership, all while preserving the trapezoidal
model of SIP.

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