





Network Working Group                                         C. Malamud
Request for Comments: 1530                 Internet Multicasting Service
Category: Informational                                          M. Rose
                                            Dover Beach Consulting, Inc.
                                                            October 1993


           Principles of Operation for the TPC.INT Subdomain:
                     General Principles and Policy

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard.  Distribution of this memo is
   unlimited.

Abstract

   This document defines the initial principles of operation for the
   tpc.int subdomain, a collection of service listings accessible over
   the Internet infrastructure through an administered namespace
   contained within the Domain Name System [1,2].

   This document is informational and applies only to those Internet
   sites that choose to register themselves within the tpc.int
   subdomain.  The tpc.int subdomain is organized as a cooperative of
   the sites that provide access within the context of the subdomain.
   Policy for the subdomain is set by a board responsible to the
   cooperative.

   The primary purpose of the tpc.int subdomain is to provide
   transparent mapping between general-purpose computers on the Internet
   and special-purpose devices directly connected to the telephone
   network.  Initially, a remote printing service is defined [3,4] which
   ties together G3-compatible facsimile devices on the telephone
   network with users of electronic mail in the Internet and associated
   message-handling domains connected to the Internet by application-
   layer gateways.

   It should be noted that remote printer gateways have long been
   technically feasible and have become an integral part of many
   individual networks.  The tpc.int subdomain integrates individual
   sites into a common namespace, transforming remote printing from a
   single-site, value-added service into an integral transparent service
   in the global Internet.






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RFC 1530             General Principles and Policy          October 1993


Overview of Services in the TPC.INT Subdomain

   The tpc.int subdomain is organized as a cooperative, an association
   organized for the purpose, without gain to itself, of rendering
   service as defined in this document and as further defined by the
   membership of the cooperative.  Members of the tpc.int subdomain
   cooperative are defined as those Internet sites who provide access to
   services as defined in this document and as periodically amended by
   the membership as represented by the Board of Arbitration and
   Conciliation for the tpc.int subdomain.

   The primary purpose of the tpc.int subdomain is to provide
   transparent mappings between users of general-purpose computers on
   the Internet and special-purpose devices directly connected to the
   telephone network.  This mapping extends the population reachable
   from the Internet by providing a communications path to devices not
   otherwise directly addressable.

   The initial remote printing facility is built on top of the
   electronic mail protocols of the Internet, including RFC 822 [5] and
   MIME [6].  Because the remote printing service uses the message-
   handling facilities of the Internet, this service is also available
   to message-handling domains that are connected to the Internet
   through application-layer gateways (e.g., X.400-compatible systems
   [7], UUCP-based message-handling environments [8], and commercial
   services such as AT&T Mail), MCI Mail), SprintMail), and CompuServe)
   [9]).

Operation of Name Service in the TPC.INT Subdomain

   Services in the Internet are identified with a service target name as
   listed in the Domain Name System (DNS).  These target names are
   looked up in the DNS and the appropriate resource records associated
   with the name are returned.  After the name lookup has been
   completed, the initiator exchanges a series of IP packets with an
   Internet site which provides access to a service accessible through
   the tpc.int subdomain.

   In the case of remote printing, the DNS MX resource record is used to
   register those Internet sites that provide access to the remote
   printing facility.  Specifically, an Internet site running a remote
   printer server registers itself in the DNS as being willing to
   provide access to some portion of the telephone system numbering plan
   as registered by one or more MX records within the tpc.int subdomain.

   For example, if the host hewes.radio.com is willing to provide remote
   printing to devices with telephone numbers beginning with the prefix
   +1-415-336, the host would be listed in the Domain Name System with



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RFC 1530             General Principles and Policy          October 1993


   the following MX resource record:

      *.6.3.3.5.1.4.1.tpc.int.    IN MX    10 hewes.radio.com.

   Note that the resource records can have an arbitrary level of
   precision. For example, the North American numbering plan (IDDD
   country code 1) is structured by a 3-digit area code, followed by a
   3-digit exchange prefix, followed by a 4-digit station number.  As
   such, one might expect that resource records in this zone would be
   similar to

      *.5.1.4.1.tpc.int.         IN MX    10  hewes.radio.com.

   which accesses any printer with a telephone number prefix of +1-415
   (i.e., any printer in area code 415).  Another record might be
   similar to

      *.8.6.9.5.1.4.1.tpc.int.   IN MX    10  hewes.radio.com.

   allowing access to any printer in area code 415, exchange prefix 968.
   However, the level of precision is arbitrary. For example, if all of
   the printers in an organization had a telephone number prefix of +1-
   415-96, the following resource record could be used:

      *.6.9.5.1.4.1.tpc.int.     IN MX    10  hewes.radio.com.

   It is the responsibility of administrators of the tpc.int namespace
   to register only those Internet sites that are willing to confirm to
   the principles of  operation as defined in this document and as
   periodically amended by the Board of Arbitration and Conciliation for
   the tpc.int subdomain.

   It is a key principle in the tpc.int subdomain that all Internet
   sites meeting the principles of operation as stated in this document
   shall be registered in the tpc.int subdomain without bias and that
   the subdomain should encourage the largest number of Internet sites
   possible.

   If multiple Internet sites are willing to provide access in the same
   area, multiple resource records for the same target name are
   maintained.  In response to a query, the Domain Name System returns
   the resource records in an unordered list. In practice, however, the
   initiator will consult the list in the order returned. To provide an
   unbiased environment, an authoritative name server for the tpc.int
   subdomain shall alternate the ordering of the list frequently, and
   shall return a small TTL with the resource records.





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RFC 1530             General Principles and Policy          October 1993


Policy Determination in the TPC.INT Subdomain

   The tpc.int subdomain is organized as a cooperative, an association
   organized for the purpose of rendering service, without gain to
   itself, within the scope of service defined in this document and as
   further defined by the membership of the cooperative.  Members of the
   tpc.int subdomain cooperative are defined as those Internet sites who
   provide access to services as defined in this document and as
   periodically amended by the membership as represented by the Board of
   Arbitration and Conciliation for the TPC.INT Subdomain.

   The primary purpose of the tpc.int subdomain is to provide
   transparent mappings between users of general-purpose computers on
   the Internet and special-purpose devices directly connected to the
   telephone network.  The listing of services in the tpc.int subdomain
   is for the necessity and convenience of the general public with
   special emphasis on providing a general-purpose link between the
   Internet infrastructure and communications devices connected to the
   telephone network.

   Policies for the tpc.int subdomain are determined by its Board of
   Arbitration and Conciliation.  A Board of Arbitration and
   Conciliation has its roots in English law, which permitted members of
   a trade to appoint masters and workmen among them to serve as
   councils of arbitration and conciliation for matters incapable of
   being otherwise settled [10].  The Board of Arbitration and
   Conciliation in the tpc.int subdomain consists of members of the
   tpc.int subdomain cooperative appointed to hear and determine all
   questions between members which may be submitted to them arising out
   of the operation of services listed in the subdomain.

   The initial Board of Arbitration and Conciliation is defined in this
   document.  Members of the Board shall serve for two-year terms except
   that 50 percent or more of the initial Board shall serve for a one-
   year term.  The Board shall determine and publish procedures which
   allow members of the tpc.int subdomain cooperative to select new
   members of the Board as their terms expire.

   If an issue relating to the definition of service or operation of
   service listed within in the subdomain is raised and is incapable of
   being settled otherwise, the matter shall be submitted by a member to
   the Board of Arbitration and Conciliation.  The Board shall hear the
   question, making provisions for comments by other members of the
   tpc.int subdomain cooperative and by the general public and shall
   make and publish a determination of policy.

   Secretariat services for the tpc.int subdomain are initially provided
   by the Internet Multicasting Service, a non-profit corporation



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   located in Washington, D.C.  The tpc.int subdomain cooperative may
   contract with other groups for the provision of secretariat services
   at any time.

   The tpc.int subdomain is organized as a cooperative to encourage
   policy determination to be in the hands of those that are offering
   the services.  The subdomain encourages the establishment of a large
   number of sites, combining the distributed local efforts of many
   individuals and small groups into a global service.

Provision of Services Listed in Other Subdomains

   The primary purpose of the tpc.int subdomain is to provide
   transparent mapping between the Internet and telephony environments.
   Other logical subdomains may be established to provide similar
   mappings. The Internet sites participating in those other subdomains
   might also be registered under the tpc.int subdomain, or could choose
   to be registered solely within those other subdomains with different
   policies.

   It is the policy of the tpc.int subdomain cooperative to encourage
   the establishment of other service listing domains, either as a
   public trust or cooperative or as a purely commercial venture.

Initial Board of Arbitration and Conciliation

   The following are the initial Board of Arbitration and Conciliation
   for the tpc.int subdomain:

   Dr. Rob Blokzijl                 Dr. Jun Murai
   NIKHEF                           Keio University
   Amsterdam,                       Fujisawa
   The Netherlands                  Japan

   Geoff Huston                     Dr. Marshall T. Rose
   AARNET                           Dover Beach Consulting
   Canberra                         Mountain View, CA
   Australia                        United States

   Carl Malamud
   Internet Multicasting Service
   Washington, D.C.
   United States








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References

   [1] Mockapetris, P., "Domain Names"Concepts and Facilities", STD 13,
       RFC 1034, USC/Information Sciences Institute, November 1987.

   [2] Mockapetris, P., "Domain Names"Implementation and Specification",
       STD 13, RFC 1035, USC/Information Sciences Institute, November
       1987.

   [3] Malamud, C., and M. Rose, "Principles of Operation for the
       TPC.INT Subdomain: Technical Procedures", RFC 1528, Internet
       Multicasting Service, Dover Beach Consulting, Inc., October 1993.

   [4] Malamud, C., and M. Rose, "Principles of Operation for the
       TPC.INT Subdomain: Administrative Policies" RFC 1529, Internet
       Multicasting Service, Dover Beach Consulting, Inc., October 1993.

   [5] Crocker, D., "Standard for the Format of ARPA Internet Text
       Messages", STD 11, RFC 822, UDEL, August 1982.

   [6] Borenstein, N., and N. Freed, "MIME (Multipurpose Internet Mail
       Extensions) Part One: Mechanisms for Specifying and Describing
       the Format of Internet Message Bodies", RFC 1521, Bellcore,
       Innosoft, September 1993.

   [7] Hardcastle-Kille, S., "Mapping Between X.400 (1988)/ISO 10021 and
       RFC 822", RFC 1327, May 1992. See also M.T. Rose, The Message
       Book, Prentice Hall (Englewood Cliffs, NJ: 1992).

   [8] Horton, M., "UUCP Mail Interchange Format Standard", RFC 976,
       February, 1986.  See also Tim O'Reilly and Grace Todino, Managing
       UUCP and Usenet, O'Reilly & Associates (Sebastapol, CA: 1986).

   [9] See Frey and Adams, !%@:: A Directory of Electronic Mail
       Addressing and Networks, 3rd ed., O'Reilly & Associates
       (Sebastapol, CA: 1993).

  [10] See Acts 30 and 31 Vict., c. 105 as quoted in Black's Law
       Dictionary, 5th ed., West Publishing (St. Paul, Minn: 1979), p.
       313.

Security Considerations

   Security issues are not discussed in this memo.







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RFC 1530             General Principles and Policy          October 1993


Authors' Addresses

      Carl Malamud
      Internet Multicasting Service
      Suite 1155, The National Press Building
      Washington, DC 20045
      US

      Phone: +1 202 628 2044
      Fax:   +1 202 628 2042
      Email: carl@malamud.com


      Marshall T. Rose
      Dover Beach Consulting, Inc.
      420 Whisman Court
      Mountain View, CA  94043-2186
      US

      Phone: +1 415 968 1052
      Fax:   +1 415 968 2510
      Email: mrose@dbc.mtview.ca.us





























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