INTERNET-DRAFT Edward Lewis
February 19, 2007 NeuStar, Inc.
Expires August 19, 2007
E.212 ENUMService Type Definition
draft-lewis-enum-enumservice-e212-00.txt
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Abstract
This document registers the Enumservice "e212" using the URI scheme
"tel:" as per the IANA registration process defined in the ENUM
specification, RFC 3761. This Enumservice may be used to
indicate International Mobile Subscriber Information with a telephone
number.
1 Introduction
This document registers the Enumservice "e212" using the URI scheme
"tel:" as per the IANA registration process defined in the ENUM
specification, RFC 3761 [RFC3761]. This Enumservice may be used to
indicate International Mobile Subscriber Information with a telephone
number. Parameters to include this information in the "tel" URI
[RFC3966] are defined in [TELE212]. The IANA application is
presented in Appendix A.
An example of the usefulness of this service is the ability to identify
the service provider for a telephone number for billing purposes.
To identify the provider of +1-571-555-9586 as Ficticious Company,
the following NAPTR record will be stored somewhere in the DNS.
$ORIGIN 5.5.5.1.7.5.1.e164.arpa.
6.8.5.9 IN 900 NAPTR (
10 ; preference
10 ; order
"u" ; flags
"E2U+e212" ; service type
"!^(.)*$!tel:\1@ficitious.example.;mcc=999;mnc=00!"
. ) ; replacement domain name
MCC 999 and MNC 00 identify Fictious Company through look ups in tables
holding these parameters. MCC are assigned by the ITU, MNC assignments
are national matters.
2 Terminology
The key words "MUST," "SHOULD," and "MAY" in this document are to be
interpreted as described in RFC 2119 [RFC2119].
3 Details
Details of the definition are contained in the ENUM service application
in Appendix A.
4 Security Considerations
The one concern raised in this document is the potential concern over
the privacy required for the MSIN that appears in the IMSI. If the
IMSC parameter is used, the operator must understand the exposure that
may be had by the data. The full IMSI ought to be restricted to
situations in which the exposure of the MSIN is acceptable.
To alleviate this concern, the MCC and MNC parameters are defined, these
are expected to be what appears in a pubic or otherwise widely (or
externally) distributed environment.
5 IANA Considerations
This document requests registration of the "e212" Enumservice according
to the guidelines and specifications in RFC 3761 and the definitions in
this document. This Enumservice is intended for use with the "tel:" URI
scheme.
6 Internationalization Considerations
There are no internationalization considerations in these parameters.
All data are numeric.
7 References
7.1 Normative
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC3761] Faltstrom, P. and M. Mealling, "The E.164 to Uniform Resource
Identifiers (URI) Dynamic Delegation Discovery System (DDDS)
Application (ENUM)", RFC 3761, April 2004.
[RFC3966] Schulzrinne, H., "The tel URI for Telephone Numbers", RFC
3966, December 2004.
[ITUE212] ITU-T Recommendation E.212, "The International
Identification Plan for Mobile Terminals and Mobile
Users, " May 2004.
[TELE212] "E.212 Parameters for the "tel" URI", Internet Draft work
in progress, draft-enum-teluri-e212-00.txt.
7.2 Informative
none
8 Author's Address
Edward Lewis
NeuStar
46000 Center Oak Plaza
Sterling, VA
20166, US
Phone: +1-571-434-5468
EMail: ed.lewis@neustar.biz
Appendix A. ENUM Service Registration
Enumservice Name:
e212
Enumservice Type:
e212
Enumservice Subtype:
N/A
URI Schemes:
"tel:"
Functional Specification:
This Enumservice indicates that the remote resource identified can
be addressed by the associated URI scheme.
Security Considerations:
e.g. "see Section something"
Intended Usage:
COMMON
Author(s):
Edward Lewis <ed.lewis@neustar.biz>
Any other information the author(s) deem(s) interesting:
None
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