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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Telephone Number Mapping Working Group of the IETF.
Title : Number Portability in the GSTN: An Overview
Author(s) : M. Foster, T. McGarry, J. Yu
Filename : draft-ietf-enum-e164-gstn-np-04.txt
Pages : 27
Date : 17-Jun-02
This document provides an overview of E.164 telephone number
portability (NP) in the Global Switched Telephone Network (GSTN).
NP is a regulatory imperative seeking to liberalize local telephony
service competition, by enabling end-users to retain telephone
numbers while changing service providers. NP changes the
fundamental nature of a dialed E.164 number from a hierarchical
physical routing address to a virtual address, thereby requiring the
transparent translation of the later to the former. In addition,
there are various regulatory constraints that establish relevant
parameters for NP implementation, most of which are not network
technology specific. Consequently, the implementation of NP
behavior consistent with applicable regulatory constraints, as well
as the need for interoperation with the existing GSTN NP
implementations, are relevant topics for numerous areas of IP
telephony work-in-progress at IETF.
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