Number Portability Parameters for the "tel" URI
RFC 4694

Approval announcement
Draft of message to be sent after approval:

From: The IESG <>
To: IETF-Announce <>
Cc: Internet Architecture Board <>,
    RFC Editor <>, 
    iptel mailing list <>, 
    iptel chair <>
Subject: Protocol Action: 'NP Parameters for the "tel" URI' to 
         Proposed Standard 

The IESG has approved the following document:

- 'NP Parameters for the "tel" URI '
   <draft-ietf-iptel-tel-np-12.txt> as a Proposed Standard

This document is the product of the IP Telephony Working Group. 

The IESG contact persons are Cullen Jennings and Jon Peterson.

A URL of this Internet-Draft is:

Technical Summary

The traditional telephone system  allows phone numbers to be moved from
one carrier to another. This is referred to as number portability. When a
phone number is looked up in a number portability database, various
information can be returned such as an identifier for the responsible
carrier or a new number that this call should by routed to. This
specification defines parameters for the the tel URI that allow the tel
URI to carry the carrier identification, a routed number, and an indicator
that indicates that the number portability lookup has already been done.

Working Group Summary

The working group has consensus on this document and reviewed it for a
long time. No significant concerns were raised.

Protocol Quality

The specification was reviewed for NITs by Alexander Car and Vijay