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Versions: (draft-guy-enumiax) 00 01 02 03 04 05 06 07 08 09 10 RFC 6315

Telephone Number Mapping                                          E. Guy
Internet-Draft                                             E-MC Software
Expires: April 25, 2007                                 October 22, 2006


                 IANA Registration for IAX Enumservice
                         draft-ietf-enum-iax-01

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Copyright Notice

   Copyright (C) The Internet Society (2006).

Abstract

   This document registers the IAX2 (Inter-Asterisk eXchange Version 2)
   Enumservice using the URI scheme 'iax2:' as per the IANA registration
   process defined in the ENUM specification RFC3761.









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Table of Contents

   1.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
   3.  IAX Service Registration . . . . . . . . . . . . . . . . . . .  5
   4.  Examples . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
     4.1.  Simple IAX Registration  . . . . . . . . . . . . . . . . .  6
     4.2.  Registration with Preference Order . . . . . . . . . . . .  6
     4.3.  Registration with an IAX context . . . . . . . . . . . . .  6
     4.4.  IPv6 Registration  . . . . . . . . . . . . . . . . . . . .  7
   5.  Security Considerations  . . . . . . . . . . . . . . . . . . .  8
   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  9
   7.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 10
   8.  Draft Changes  . . . . . . . . . . . . . . . . . . . . . . . . 11
     8.1.  Changes since draft-ietf-enum-iax-01 . . . . . . . . . . . 11
     8.2.  Changes since draft-guy-iaxenum-00 . . . . . . . . . . . . 11
   9.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
   Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 13
   Intellectual Property and Copyright Statements . . . . . . . . . . 14
































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1.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].














































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2.  Introduction

   The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation
   Discovery System (DDDS) Application (ENUM) [RFC3761] transforms E.164
   [E164] numbers into DNS names and the use of DNS services like
   delegation through NS records, and use of NAPTR records in DNS.
   Using this system, one can look up what services are available for a
   specific domain name in a decentralized way with distributed
   management of the different levels in the lookup process.

   IAX2 [ID-IAX] is an "all in one" protocol for handling streaming
   media in Internet Protocol (IP) networks.  IAX combines both control
   and media services in the same stream which decreases bandwidth usage
   and improves Network Address Translation (NAT) transparency.  These
   design decisions have made IAX accel at handling Internet telephony.
   The 'iax2:' URI scheme is also defined in the IAX protocol document.

   This document registers the IAX Enumservice according to the
   guidelines given in RFC3761 [RFC3761].  The IAX Enumservice is used
   in provisioning the services field of a NAPTR resource record.  This
   field indicates what class of functionality a given end point offers.
   The registration is defined within the DDDS (Dynamic Delegation
   Discovery System [RFC3401] [RFC3402] [RFC3403] [RFC3404] ) hierarchy,
   for use with the "E2U" DDDS Application defined in RFC3761.
   [RFC3761]


























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3.  IAX Service Registration

   Enumservice Name: "IAX"

   Enumservice Type: "iax"

   Enumservice Subtype: iax2

   URI Scheme: "iax2:"

   Functional Specification:

      The IAX Enumservice indicates that the resource identified by the
      associated URI scheme is capable of being contacted using the IAX2
      protocol to provide a communication session.

      A client selecting this NAPTR will have support for originating a
      call utilizing the IAX2 protocol [ID-IAX].

   Security Considerations:

      There are no specific security issues with this Enumservice.
      However, the general considerations of Section 5 apply.

   Intended Usage: COMMON

   Author:

      Ed Guy (For contact detail, see the Authors' Address section
      below).

   Any other information the author deems interesting:

      None.

















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4.  Examples

4.1.  Simple IAX Registration

   The following is an example of the use of the enumservice registered
   by this document in a NAPTR resource record.

   $ORIGIN 8.4.1.0.6.4.9.7.0.2.4.4.e164.arpa.
   @ IN NAPTR 10 100 "u" "E2U+iax:iax2" "!^.*$!iax2:example.com/
   charlie!"

   This contact information indicates that the domain
   8.4.1.0.6.4.9.7.0.2.4.4.e164.arpa. may be contacted by using the IAX2
   protocol at domain 'example.com' with the identifier 'charlie'.

4.2.  Registration with Preference Order

   The next example demonstrates that the domain
   3.8.0.0.6.9.2.3.6.1.4.4.e164.arpa. is preferably contacted by IAX2,
   secondly via SIP, and then H.323 for voice, and lastly by SMTP for
   messaging.  Note that the tokens "iax", "sip", "h323", and "msg" are
   Types registered (or to be registered) with IANA, and they have no
   implicit connection with the protocols or URI schemes with the same
   names.

   In each case, the next step in the resolution process is to use the
   resolution mechanism appropriate to each of the protocols, (specified
   by the URI schemes iax, sip, h323 and mailto).

   $ORIGIN 3.8.0.0.6.9.2.3.6.1.4.4.e164.arpa.
   @ IN NAPTR 10 100 "u" "E2U+iax" "!^.*$!iax2:example.com/mccarthy!" .
   @ IN NAPTR 10 101 "u" "E2U+sip" "!^.*$!sip:mccarthy@example.com!" .
   @ IN NAPTR 10 101 "u" "E2U+h323" "!^.*$!h323:mccarthy@example.com!" .
   @ IN NAPTR 10 102 "u" "E2U+msg" "!^.*$!mailto:mccarthy@example.com!"
   .

4.3.  Registration with an IAX context

   The following is an example of the use of the enumservice registered
   by this document in a NAPTR resource record that contains a
   destination 'context'.

   $ORIGIN 9.4.1.0.6.4.9.7.0.2.4.4.e164.arpa.
   @ IN NAPTR 10 100 "u" "E2U+iax:iax2" "!^.*$!iax2:example.com/
   joe?developers!"

   This contact information indicates that the domain
   9.4.1.0.6.4.9.7.0.2.4.4.e164.arpa. may be contacted by using the IAX2



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   protocol at domain 'example.com' with the identifier 'joe' in the
   context (or user partition) 'developers'.

4.4.  IPv6 Registration

   The following is an example of the use of the enumservice registered
   by this document in a NAPTR resource record that contains a
   destination 'context'.

   $ORIGIN 9.4.1.0.6.4.9.7.0.2.4.4.e164.arpa.
   @ IN NAPTR 10 100 "u" "E2U+iax:iax2" "!^.*$!iax2:[2001:db8::1]:4569/
   alice?friends!"

   This contact information indicates that the domain
   9.4.1.0.6.4.9.7.0.2.4.4.e164.arpa. may be contacted by using the IAX2
   protocol at IPv6 address [2001:db8::1], port 4569with the identifier
   'alice' in the context (or user partition) 'friends'.


































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5.  Security Considerations

   The IAX Enumservice does not introduce any new security issues beyond
   any already present in the DNS and IAX protocols except that this
   Enumservice provides another fact that may be harvested and possibly
   exploited.

   The use of DNSSEC [RFC2535] is recommended to improve operational
   security.










































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6.  IANA Considerations

   This document requests registration of the "iax" Enumservice with the
   'iax2' sub-type according to the guidelines and specifications in RFC
   3761 [RFC3761] and the definitions in this document.














































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7.  Acknowledgements

   This work was supported by Internet Foundation Austria.  In addition,
   thanks to Michael Haberler and Richard Stastny for their support and
   guidance in writing this document.














































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8.  Draft Changes

8.1.  Changes since draft-ietf-enum-iax-01

   * Minor grammatical edits.

   * Added the IPv6 Example.

   * Updated References.

8.2.  Changes since draft-guy-iaxenum-00

   * Minor grammatical edits.

   * Added the 'iax2' subtype at WG request.

   * The Examples section was split into subsections for each example.

   * Context example added.

9.  References

   [E164]     ITU-T, "The International Public Telecommunication Number
              Plan",  Recommendation E.164, May 1997.

   [ID-IAX]   Spencer, M., Shumard, K., Capouch, B., and E. Guy, "IAX2:
              Inter-Asterisk eXchange Version 2", draft-guy-iax-02 Work
              In Progress, October 2006.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC2535]  Eastlake, D., "Domain Name System Security Extensions",
              RFC 2535, March 1999.

   [RFC3401]  Mealling, M., "Dynamic Delegation Discovery System (DDDS)
              Part One: The Comprehensive DDDS", RFC 3401, October 2002.

   [RFC3402]  Mealling, M., "Dynamic Delegation Discovery System (DDDS)
              Part Two: The Algorithm", RFC 3402, October 2002.

   [RFC3403]  Mealling, M., "Dynamic Delegation Discovery System (DDDS)
              Part Three: The Domain Name System (DNS) Database",
              RFC 3403, October 2002.

   [RFC3404]  Mealling, M., "Dynamic Delegation Discovery System (DDDS)
              Part Four: The Uniform Resource Identifiers (URI)",
              RFC 3404, October 2002.



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   [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.
















































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Author's Address

   Ed Guy
   E-MC Software
   235 Main Street, STE 253
   Madison, NJ  07940
   US

   Phone: +1 973 437 4519
   Email: edguy@emcsw.com
   URI:   http://www.emcsw.com/








































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   Internet Society.




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