Internet Architecture Board (IAB)                    S. Trowbridge, Ed.
Internet-Draft                                           Alcatel-Lucent
Obsoletes: 3356                                            E. Lear, Ed.
Intended status: Informational                            Cisco Systems
                                                        G. Fishman, Ed.
                                              Pearlfisher International
                                                        S. Bradner, Ed.
                                                     Harvard University
Expires: December 4, 18, 2012                                June 11, 19, 2012

          Internet Engineering Task Force and International
     Telecommunication Union - Telecommunication Standardization
                   Sector Collaboration Guidelines




   This document provides guidance to aid in the understanding of
   collaboration on standards development between the International
   Telecommunication Union -- Telecommunication Standardization
   Sector (ITU-T) and the Internet Society (ISOC) -- Internet
   Engineering Task Force (IETF).  It is an update of and obsoletes
   RFC 3356.  The updates reflect changes in the IETF and ITU-T
   since RFC 3356 was written.  The bulk of this document is common
   text with ITU-T A Series Supplement 3.

   Note:  This was approved by ITU-T TSAG on xx July 2012 as a
   Supplement to the ITU-T A-Series of Recommendations (will be
   numbered as A-Series Supplement 3).

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance
   with the provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet
   Engineering Task Force (IETF), its areas, and its working
   groups. Note that other groups may also distribute working
   documents as Internet-Drafts.

   Internet-Drafts are draft documents valid for a maximum of six
   months and may be updated, replaced, or obsoleted by other
   documents at any time. It is inappropriate to use Internet-
   Drafts as reference material or to cite them other than as "work
   in progress".

   The list of current Internet-Drafts can be accessed at

   The list of Internet-Draft Shadow Directories can be accessed at

   This Internet-Draft will expire on July 9, 2012.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors. All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   ( in effect on the date of
   publication of this document. Please review these documents
   carefully, as they describe your rights and restrictions with
   respect to this document. Code Components extracted from this
   document must include Simplified BSD License text as described
   in Section 4.e of the Trust Legal Provisions and are provided
   without warranty as described in the Simplified BSD License.

Table of Contents

   1. Introduction & Scope...........................................4
   2. Guidance on Collaboration......................................5
      2.1. How to Interact on ITU-T or IETF Work Items...............5
         2.1.1. How the ITU-T is informed about Existing IETF Work
         2.1.2. How the IETF is informed about Existing ITU-T Work
         2.1.3. How the ITU-T is informed about proposed new IETF work
         2.1.4. How the IETF is informed about ITU-T Work Items......7
      2.2. Representation............................................7
         2.2.1. IETF Recognition at ITU-T............................7
         Experts and representatives from the IETF that are chosen by
         IETF leadership normally participate in ITU-T meetings as ISOC
         delegates. The ISOC focal point will facilitate registration
         and verification of these people, as appropriate............7
         2.2.2. ITU-T Recognition at ISOC/IETF.......................7
      2.3. Communication outside of Meetings.........................8
      2.4. Mailing Lists.............................................8
      2.5. Document Sharing..........................................9
         2.5.1. Contributions and Liaison Statements from the IETF to
         2.5.2. Contributions and Liaison Statements from the ITU-T to
         2.5.3. ITU-T & IETF........................................10
      2.6. Simple Cross Referencing.................................11
      2.7. Preliminary Work Efforts.................................11
      2.8. Additional Items.........................................11
         2.8.1. IETF Information that may be of use to ITU-T
         2.8.2. ITU-T Information that may be useful to IETF
   3. Security Considerations.......................................13
   4. IANA Considerations...........................................13
   5. Acknowledgements..............................................13
   6. References....................................................13
      6.1. Normative References.....................................13
      6.2. Informative References...................................14
   7. Changes since RFC3356.........................................15
   8. Authors' Addresses............................................15

[The following note to be removed upon publication as an RFC]

Editors' Note:

   This Informational Internet-Draft is intended for publication as an
   RFC with the IAB stream, and is subject to the publication process
   described in RFC 4845.

1. Introduction & Scope

   This document provides non-normative guidance to aid in the
   understanding of collaboration on standards development between the
   International Telecommunication Union - Telecommunication
   Standardization Sector (ITU-T) and the Internet Society (ISOC) --
   Internet Engineering Task Force (IETF).  Early identification of
   topics  of mutual interest will allow for constructive efforts
   between the two organizations. organizations based on mutual respect.

   In the IETF, work is done in working groups (WG), mostly through
   open, public mailing lists rather than face-to-face meetings.
   WGs are organized into Areas, each Area being managed by two co-
   area directors.  Collectively, the area directors comprise the
   Internet Engineering Steering Group (IESG).

   In the ITU-T, work is defined by study questions which are
   worked on mostly through meetings led by rapporteurs (these are
   sometimes called "Rapporteur's Group" meetings).  Questions are
   generally grouped within working parties (WPs) led by a WP
   chairman.  Working parties report to a parent study group (SG)
   led by a SG chairman. Work may also be conducted in ITU-T focus
   groups (see Section 2.5)

   To foster ongoing communication between the ITU-T and IETF, it is
   important to identify and establish contact points within each
   organization.  Contact points may include:

  1. ITU-T Study Group Chair and IETF Area Director

     An IETF area director is the individual responsible for
     overseeing a major focus of activity with a scope similar to
     that of an ITU-T study group chairman.  These positions are
     both relatively long-term (of several years) and offer the
     stability of contact points between the two organizations for
     a given topic.

  2. ITU-T Rapporteur and IETF Working Group Chair
     An IETF working group chair is an individual who is assigned
     to lead the work on a specific task within one particular Area
     with a scope similar to that of an ITU-T rapporteur.  These
     positions are working positions (of a year or more) that
     typically end when the work on a specific topic ends.
     Collaboration here is very beneficial to ensure the actual
     work gets done.

  3. Other Contact Points

     It may be beneficial to establish additional contact points
     for specific topics of mutual interest.  These contact points
     should be established early in the work effort, and in some
     cases the contact point identified by each organization may be
     the same individual.  In addition, the ITU-T has an additional
     level of management, the working party chair.  From time to
     time it may be beneficial for this person to exchange views
     with IETF working group chairs and area directors.

   Note that the current list of IETF area directors and working
   group chairs can be found in the IETF working group charters.
   The current ITU-T study group chairmen and rapporteurs are
   listed on the ITU-T web page.

2. Guidance on Collaboration

   This section describes how the existing processes within the IETF
   and ITU-T may be utilized to enable collaboration between the

2.1. How to Interact on ITU-T or IETF Work Items

   Study groups that have identified work topics that are IP-
   related should evaluate the relationship with topics defined in
   the IETF. Current IETF working groups and their charters (IETF
   definition of the scope of work) are listed in the IETF archives
   (see Section 2.8.1).

   A study group may decide that development of a Recommendation on
   a particular topic may benefit from collaboration with the IETF.
   The study group should identify this collaboration in its work
   plan (specifically in that of each Question involved),
   describing the goal of the collaboration and its expected

   An IETF working group should also evaluate and identify areas of
   relationship with the ITU-T and document the collaboration with
   the ITU-T study group in its charter.

   The following sections outline a process that can be used to
   enable each group to be informed about the other's new work

2.1.1. How the ITU-T is informed about Existing IETF Work Items

   The responsibility is on individual study groups to review the
   current IETF working groups to determine if there are any topics of
   mutual interest.  Working group charters and active Internet-Drafts
   can be found on the IETF web site (
   If a study group identifies a common area of work, the study group
   leadership should contact both the IETF working group chair and the
   area director(s) responsible. This may be accompanied by a formal
   liaison statement (see 2.3).

2.1.2. How the IETF is informed about Existing ITU-T Work Items

   The IETF through its representatives will review current work of
   various study groups from time to time.  Each ITU-T study group's
   web pages on the ITU-T web site contain its current list of
   Questions as well as its current work programme.  When an area or
   working group identifies a common area of work, the matter is
   referred to appropriate working group chairs and area directors,
   where they may consider sending a liaison statement to the
   appropriate study group.

2.1.3. How the ITU-T is informed about proposed new IETF work items

   The IETF maintains a mailing list for the distribution of proposed
   new work items among standards development organizations.  Many such
   items can be identified in proposed Birds of a Feather (BoF)
   sessions, as well as draft charters for working groups.  The IETF
   forwards all such draft charters for all new and revised working
   groups and Birds Of a Feather session announcements to the IETF new-
   work mailing list.  An ITU-T mailing list is subscribed to this
   list. Leadership of study groups may subscribe to this ITU-T mailing
   list, which is maintained by the Telecommunication Standardization
   Bureau (TSB).  Members of the SG-specific listname may include the
   SG chairman, SG vice-chairmen, working party chairmen, concerned
   rapporteurs, other experts designated by the SG and the SG
   Counsellor.  This will enable the SGs to monitor the new work items
   for possible overlap or interest to their study group.  It is
   expected that this mailing list will see a few messages per month.

   Each SG chairman, or designated representative, may provide comments
   on these charters by responding to the IESG mailing list at clearly indicating their ITU-T position and the nature
   of their concern.  Plain-text email is preferred on the IESG mailing

   It should be noted that the IETF turnaround time for new working
   group charters is can be as short as two weeks.  As a result, the
   mailing list should be consistently monitored.

2.1.4. How the IETF is informed about ITU-T Work Items

   The ITU-T accepts new areas of work through the creation or update
   of Questions and these can be found on the ITU-T Study Group web
   pages.  In addition, the ITU-T work programme is documented on each
   ITU-T study group's web page on the ITU-T web site.

   Study groups send updates to the IETF new-work mailing list as new
   Questions are first drafted or created, terms of reference for
   Questions are first drafted or updated, or otherwise when there is
   reason to believe that a particular effort might be of interest to
   the IETF.  Area directors or WG chairs should provide comments
   through liaison statements or direct email to the relevant SG
   chairman in cases of possible overlap or interest.

2.2. Representation

   ISOC, including its standards body IETF, is a Sector Member of the
   ITU-T.  As a result, ISOC delegates are therefore afforded the same
   rights as other ITU-T Sector Members (see 2.2.1).  Conversely, ITU-T
   delegates may participate in the work of the IETF as representatives
   of the ITU-T (see 2.2.2).  To promote collaboration it is useful to
   facilitate communication between the organizations as further
   described below.


   IETF Recognition at ITU-T

   Experts and representatives from the IETF that are chosen by IETF
   leadership normally participate in ITU-T meetings as ISOC delegates.
   The ISOC focal point will facilitate registration and verification
   of these people, as appropriate.


2.2.1. ITU-T Recognition at ISOC/IETF

   ITU-T study group chairmen can authorize one or more members to
   attend an IETF meeting as an official ITU-T delegate speaking
   authoritatively on behalf of the activities of the study group (or a
   particular rapporteur group).  The study group chairman sends the
   ITU-T list of delegates by email to the working group chair, with a
   copy to the area directors, and also to the study group.  Note that,
   according to IETF process, opinions expressed by any such delegate
   are given equal weight with opinions expressed by any other working
   group participant.

2.3. Communication outside of Meetings

   Informal communication between contact points and experts of both
   organizations is encouraged.  However, note that formal
   communication from an ITU-T study group, working party or rapporteur
   group to an associated IETF contact point must be explicitly
   approved and identified as coming from the study group, working
   party or rapporteur group, respectively.  Formal liaison statements
   from the ITU-T to the IETF are transmitted according to the
   procedures described in [2].  These liaison statements are placed by
   the IETF onto a liaison statements web page at  An individual at the IETF is
   assigned responsibility for dealing with each liaison statement that
   is received.  The name and contact information of the responsible
   person and any applicable deadline is listed with the links to the
   liaison statement on this web page.

   Formal liaison statements from the IAB, the IESG, the IETF, an IETF
   working group or Area to the ITU-T are generated, approved, and
   transmitted according to the procedures described in [2] and [15].
   Formal communication is intended to allow the sharing of positions
   between the IETF and the ITU-T outside of actual documents (as
   described in 2.5.1).  This covers such things as comments on
   documents and requests for input.

2.4. Mailing Lists

   All IETF working groups and all ITU-T study group Questions have
   associated mailing lists.

   In the IETF, the mailing list is the primary vehicle for discussion
   and decision-making.  It is recommended that the ITU-T experts
   interested in particular IETF working group topics subscribe to and
   participate in these lists.  IETF WG mailing lists are open to all
   subscribers.  The IETF working group mailing list subscription and
   archive information are noted in each working group's charter.  In
   the ITU-T, the TSB has set up formal mailing lists for Questions,
   working parties and other topics within study groups (more detail
   can be found on the ITU-T website).  These mailing lists are
   typically used for ITU-T correspondence, including technical
   discussion, meeting logistics, reports, etc.  Note that individual
   subscribers to this list must be affiliated with an ITU-T member or
   associate (at this time, there is no blanket inclusion of all IETF
   participants as members, however, as a member, the ISOC focal point
   can facilitate access by IETF technical experts, liaison
   representatives, or liaison managers). IETF participants may
   subscribe to ITU-T focus group email lists if they are from a
   country citizens of
   countries that is a member are members of the ITU-T.

2.5. Document Sharing

   During the course of ITU-T and IETF collaboration it is important to
   share working drafts and documents among the technical working
   groups.  Initially proposed concepts and specifications typically
   can be circulated by email (often just repeating the concept and not
   including the details of the specification) on both the IETF and
   ITU-T mailing lists.  In addition, working texts (or URLs) of draft
   Recommendations, Internet-Drafts or RFCs may also be sent between
   the organizations as described below.

   Internet-Drafts are available on the IETF web site.  The ITU-T can
   make selected ITU-T documents at any stage of development available
   to IETF by attaching them to a formal liaison statement. Although a
   communication can point to a URL where a non-ASCII document (e.g.,
   Word) can be downloaded, attachments in proprietary formats to an
   IETF mailing list are discouraged.  It should also be recognized
   that the official versions of all IETF documents are in ASCII.

2.5.1. Contributions and Liaison Statements from the IETF to ITU-T

   IETF documents (e.g., Internet-Drafts) or URLs of those documents
   are most commonly transmitted to ITU-T study groups as liaison
   statements (see [2]), but exceptionally can be submitted to a study
   group as a Contribution from ISOC.  In order to ensure that the IETF
   has properly authorized this, the IETF working group must agree that
   the specific drafts are of mutual interest, that there is a benefit
   in forwarding them to the ITU-T for review, comment and potential
   use and that the document status is accurately represented in the
   cover letter.  Once agreed, the appropriate area directors would
   review the working group request and give approval.  The rules of
   the IETF Trust are followed in these circumstances[3]. The
   contributions would then be forwarded (with the noted approval) to
   the TSB for circulation as a study group Contribution (see 2.2).
   Note that material submitted to the ITU-T as an ISOC Contribution is
   governed by Section 3.1.5 of Recommendation ITU-T A.1. Any such
   contribution will be made only after receiving necessary approval of
   owners of the work in question. In other circumstances, a liaison
   statement may be appropriate. See RFC 5378 and Recommendation ITU-T
   A.1 for more information.[3, 15]

2.5.2. Contributions and Liaison Statements from the ITU-T to IETF

   An ITU-T study group or working party may send texts of draft new or
   revised Recommendations, clearly indicating their status, to the
   IETF as contributions in the form of liaison statements or Internet-
   Drafts.  Internet-Drafts are IETF temporary documents that expire
   six months after being published.  The study group or working party
   must decide that there is a benefit in forwarding them to the IETF
   for review, comment and potential use.  Terms of reference for
   rapporteur group meetings may authorize rapporteur groups to send
   working documents, in the form of Internet-Drafts, to the IETF.

   If the study group or working party elects to transmit the text as
   an Internet-Draft, the document editor would be instructed to
   prepare the contribution in Internet-Draft format (in ASCII and
   optionally postscript format as per [8]) and upload it via  Material submitted as
   an Internet-Draft or intended for inclusion in an Internet-Draft or
   RFC is governed by the rules set forth in RFCs 5378, 3979, and 4879.
   [4,5] Alternatively, the study group, working party or rapporteur
   group could attach the text to a formal liaison statement.

   Both the rapporteur and the document editor should be identified as
   contacts in the contribution.  The document should also clearly
   indicate the state of development in a particular ITU-T study group.
   Note that liaison statements and their attachments sent to the IETF
   are made publicly available on the IETF web site.

2.5.3. ITU-T & IETF

   It is envisaged that the processes of 2.5.1 & 2.5.2 will often be
   used simultaneously by both an IETF working group and an ITU-T study
   group to collaborate on a topic of mutual interest.

   It is also envisaged that the outcome of the collaboration will be
   the documentation in full by one body and its referencing by the
   other (see section 2.4 for details).  That is, common or joint text
   is discouraged because of the current differences in procedures for
   document approval and revision.  Where complementary work is being
   undertaken in both organizations that will result in Recommendations
   or RFCs, due allowance should be given to the differing
   perspectives, working methods, and procedures of the two
   organizations.  That is, each organization should understand the
   other organization's procedures and strive to respect them in the

2.6. Simple Cross Referencing

   Recommendation ITU-T A.5 describes the process for including
   references to documents of other organizations in ITU-T
   Recommendations. Recommendation ITU-T A.5 also addresses the
   situation where a study group or working party decides to
   incorporate the text of another organization into the text of a
   Recommendation, rather than referencing it. Information specific to
   referencing IETF RFCs is found at

   RFC 2026 Section 6.1.1, describes the process for referencing other
   open standards (like ITU-T Recommendations) in IETF RFCs.[7]

2.7. Preliminary Work Efforts

   Both ITU-T and IETF provide mechanisms for early discussion of
   potential new work areas prior to the official start of work in an
   ITU-T study group or creation of an IETF working group.

   Objectives, methods and procedures for the creation and operation of
   ITU-T focus groups are defined in Recommendation ITU-T A.7. Focus
   groups are frequently created in new work areas where there is a
   need for deliverables to be produced on a specific topic within a
   short timeframe. IETF participants who are not members or associates
   of ITU-T may participate fully in the work of ITU-T focus groups if
   they are from a country citizens of countries that is a member are members of the ITU-T.

   In the IETF, guidance for Birds Of a Feather (BoF) sessions is
   provided in RFC 5434.  Efforts that have not yet reached the working
   group stage may be discussed in BOF sessions.[13] These sessions
   typically gauge interest in pursuing creation of working groups. In
   some cases, these discussions continue on mailing lists.

2.8. Additional Items

2.8.1. IETF Information that may be of use to ITU-T participations

   Information on IETF procedures may be found in the documents in the
   informative references, and URLs below.  Note that RFCs do not
   change after they are published.  Rather they are either obsoleted
   or updated by other RFCs.  Such updates are tracked in the rfc-
   index.txt file.

   Current list and status of all IETF RFCs:

   Current list and description of all IETF Internet-Drafts:

   Current list of IETF working groups and their Charters: (includes
   area directors and chair contacts, mailing list information, etc.)

   Current list of registered BOFs

   RFC Editor pages about publishing RFCs, including available tools
   and lots of guidance:

   Current list of liaison statements:

   IETF Intellectual Property Rights Policy and Notices:

   The Tao of the IETF - A Novice's Guide to the Internet Engineering
   Task Force,

2.8.2. ITU-T Information that may be useful to IETF participants

   Information about the ITU-T can be found in the informative
   references and at the URLs below.

   ITU-T Main page:

   List of all ITU-T Recommendations:

   ITU-T Study Group main page for Study Group NN (where NN is the 2-
   digit SG number):

   Intellectual Property policies, forms and databases:

   Current list of active ITU-T focus Groups

   ITU-T Procedures including:
      Resolution 1 - Rules of Procedure for ITU-T
      Resolution 2 - Study Group responsibility and mandates

   Authors Guide for drafting ITU-T Recommendations:

   Templates for contributions and liaison statements:

3. Security Considerations

   Documents that describe cooperation procedures, like this one
   does, have no direct Internet security implications.

4. IANA Considerations

   No new IANA considerations.

5. Acknowledgements

   This document is based on the text from RFCs 2436 and 3356 and
   benefited greatly from discussions during the January 2012 ITU-T
   Telecommunication Standardization Advisory Group (TSAG) meeting.

6. References

6.1. Normative References

   [1]   Daigle, L, Ed. "IAB Processes for Management of IETF Liaison
         Relationships", RFC 4052, BCP 102, April 2005.

   [2]   Trowbridge, S, Bradner, S, and Baker, F, "Procedures for
         Handling Liaison Statements to and from the IETF", RFC 4053,
         BCP 103, April 2005.

   [3]   Bradner, J. Ed., Contreras, J., Ed., "Rights Contributors
         Provide to the IETF Trust", RFC 5378, BCP 78, November, 2008.

   [4]   Bradner, S., Ed., "Intellectual Property Rights in IETF
         Technology", RFC 3979, BCP 79, March 2005.

   [5]   Narten, T., "Clarifications of the Third Party Disclosure
         Procedure in RFC 4879", BCP 79, April 2007.

   [6]   International Telecommunication Union, "Generic procedures for
         including references to documents of other organizations in
         ITU-T Recommendations",  Recommendation ITU-T A.5, 2008.

6.2. Informative References

   [7]   Bradner. S, "The Internet Standards Process -- Revision 3",
         BCP 9, RFC 2026, October 1996.

   [8]   Postel, J. and J. Reynolds, "Instructions to RFC Authors", RFC
         2223, October 1997.

   [9]   Brett, R., Bradner, S. and G. Parsons, "Collaboration between
         ISOC/IETF and ITU-T", RFC 2436, October 1998.

   [10]  Fishman, G. and Bradner, S., "Internet Engineering Task Force
         and International Telecommunication Union - Telecommunications
         Standardization Sector Collaboration Guidelines", RFC 3356,
         August 2002.

   [11]  Hovey, R., Bradner, S., "The Organizations involved in the
         IETF Standards Process, October 1996", RFC 2028, October,

   [12]  Bradner, S., "IETF Working Group Guidelines and Procedures",
         RFC-2418, September 1998.

   [13]  Narten, T., "Considerations for Having a Successful Birds-of-
         a-Feather (BOF) Session", RFC 5434, February 2009.

   [14]  Alvestrand, H., "A Mission Statement for the IETF", BCP 95
         (also RFC 3935), October 2004.

   [15]  International Telecommunications Union, "Work Methods for
         study groups of the ITU Telecommunication Standardization
         Sector (ITU-T)", Recommendation ITU-T A.1, 2008.

   [16]  International Telecommunications Union, "Presentation of
         Contributions to the ITU-T", Recommendation ITU-T A.2, 2008.

   [17]  International Telecommunications Union, "Focus groups: Working
         methods and procedures",  Recommendation ITU-T A.7, 2008.

   [18]  International Telecommunications Union, "Alternative approval
         process for new and revised ITU-T Recommendations",
          Recommendation ITU-T A.8, 2008.

7. Changes since RFC3356

   The introduction has been integrated the scope section.

   Additional information has been added about copyright and IPR

   Authorization of liaison managers and liaison representatives from
   IETF to ITU-T are updated per current IETF procedures documented in

   Transmission of formal liaison statements between ITU-T and IETF are
   updated per current IETF procedures documented in [2].

   Description is added of preliminary efforts including ITU-T focus
   groups and IETF BOFs. ITU-T focus group participation is not limited
   to ITU-T members.

   Obsolete URLs in RFC3356 from both the ITU-T and IETF web sites are
   updated, more references have been moved to the References section.

8. Authors' Addresses

   Steve Trowbridge
   5280 Centennial Trail
   Boulder, CO 80303-1262 USA

   Phone: +1 720 945 6885
   Eliot Lear
   Cisco Systems GmbH
   Richtistrasse 7
   8304 Wallisellen

   Phone: +41 44 878 9200

   Gary Fishman
   Pearlfisher International
   12 Chestnut Drive
   Matawan, NJ 07747

   Phone: +1 732 778 9572

   Scott Bradner
   Harvard University
   29 Oxford St.
   Cambridge, MA 02138

   Phone: +1 617 495 3864