Network Working Group                                     R. Moulton
Request for Comments: 2503                            United Kingdom
Category: Informational                                 M. Needleman
                                      Data Research Associates, Inc
                                                      February 1999


             MIME Types for Use with the ISO ILL Protocol

Status of this Memo

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

Copyright Notice

  Copyright (C) The Internet Society (1999).  All Rights Reserved.

Abstract

  This memorandum describes a set of MIME types for use with the ISO
  Interlibrary Loan Protocol (ISO 10160/10161). Two MIME types are
  specified below.

  The first is a media type to carry objects which are  BER [BER]
  encoded ISO ILL Protocol Data Units (PDU's). BER are the basic
  Encoding Rules used to encode  PDU's which have been described using
  ASN.1 (Abstract Syntax Notation 1) [ASN.1] .

  The second is for use with the associated document delivery
  instructions.  Document Delivery Instructions (DDI) is an emerging
  protocol which enables automatic electronic delivery of items. It
  allows a request management system (which might have received a
  request for an item via the ISO Interlibrary Loan Protocol (ISO
  10160/10161))  to pass details of the request, item, and delivery, to
  a delivery module, and to receive back reports on the delivery
  process or arrival of an item. It is currently being submitted to the
  ISO TC46/SC4/WG4 committee for approval as an ISO standard.

Registration Information

  Media type name: application
  Media subtype name:  iso-10161-ill-1 - for BER encoded ISO ILL APDU's

  Media type name:  application
  Media subtype name:  ill-ddi - For associated Document Delivery
                       Instructions



Moulton & Needleman          Informational                      [Page 1]

RFC 2503              ISO ILL Protocol MIME Types          February 1999


  Required Parameter:  transfer-encoding

  For BER-encoded PDU's or DDI's, the only current legal value of this
  parameter is:

   iso-8825-ber

  The transfer-encoding parameter describes the way the PDU has been
  encoded before being submitted to the transport service (in this case
  MIME/RFC822).  The two protocols described in this RFC specify their
  APDU's using ASN.1 (ISO 8824:1990) and the most common way of
  encoding ASN.1 packets is to use the Basic Encoding Rules (BER ISO
  8825)

  The parameter is included to allow future use of these MIME types
  with other encoding schemes. As an example, the ISO 10161 standard
  also describes an encoding method using EDIFACT. In the future, other
  schemes might also be employed. (Since the EDIFACT encoding is not
  currently in use amongst the ISO 10161 and DDI communities, a value
  for the transfer-encoding parameter to describe it is not being
  registered in this RFC.)

  Optional  parameter: iso-10161-apdu-type

  Valid values are:

  ILL-Request
  Forward-Notification
  Shipped
  ILL-Answer
  Conditional-Reply
  Cancel
  Cancel-Reply
  Received
  Recall
  Returned
  Checked-In
  Overdue
  Renew
  Renew-Answer
  Lost
  Damaged
  Message
  Status-Query
  Status-Or-Error-Report
  Expired





Moulton & Needleman          Informational                      [Page 2]

RFC 2503              ISO ILL Protocol MIME Types          February 1999


  This parameter is optional and can be provided for informational or
  diagnostic purposes. The value of the PDU or DDI type can be
  determined from the actual data sent. The use and format of the PDU's
  and DDI's is defined in the relevant protocol documents which
  describe them.

Examples

  Content-Type: application/iso-10161-ill-1;  transfer-encoding=iso-
  8825-ber; iso-10161-apdu-type=Recall;

  Content-Type: application/ill-ddi;  transfer-encoding=iso-8825-ber;

Encoding

  Since BER encoded material is binary in nature, some form of encoding
  is needed when 7bit or 8bit transport mechanisms are employed.

  The recommended  encoding for BER encoded PDU's  is Base64

PDU's per Message

  When used to send BER encoded PDU's or DDI's. Each MIME body part
  will carry at most one BER encoded PDU or DDI. However, a single MIME
  message containing multiple body parts can be used to transport more
  than one BER PDU and or DDI.

Security Considerations

  There are no known security risks associated with transmitting BER
  encoded PDU's in general. However, a particular BER encoded PDU or
  DDI may have security considerations that make it inappropriate for
  transmittal through public data networks unless appropriate
  protection mechanisms, like encryption, are used. Such a situation
  might occur, for example, when organizations are exchanging documents
  that contain secure or classified information and it is necessary to
  keep information about both the material being exchanged and the
  exchanging partners confidential.

Interoperability Considerations

  BER is an international standard for encoding data meant to be
  transferred between two systems that may store data in different
  local formats internally [BER].







Moulton & Needleman          Informational                      [Page 3]

RFC 2503              ISO ILL Protocol MIME Types          February 1999


References

  [BER]   ISO/IEC 8825:1990 Information Technology - Open Systems
          Interconnection - Specification of Basic Encoding Rules for
          Abstract Syntax Notation One (ASN.1)

  [ASN.1] ISO/IEC 8824:1990 Information Technology - Open Systems
          Interconnection - Specification of Abstract Syntax Notation
          One (ASN.1)

  ISO 10160:1997 Information  and Documentation - Open Systems
          Interconnection - Interlibrary Loan Application Service
          Definition

  ISO 10161-1:1997 Information and Documentation - Open Systems
          Interconnection - Interlibrary Loan Application Protocol
          Specification - Part 1: Protocol Specification

Additional Information:

  The National Library of Canada has been designated the maintenance
  agency for the ISO ILL protocol. For more information on this MIME
  type contact:

  Barbara Shuh
  Library Network Specialist
  Information Analysis and Standards
  Information and Technology Services
  National Library of Canada
  395 Wellington Street
  Ottawa, Ontario CANADA
  K1A 0N4

  Phone: (819) 994-6969
  Fax:   (819) 994-6835
  EMail: [email protected]















Moulton & Needleman          Informational                      [Page 4]

RFC 2503              ISO ILL Protocol MIME Types          February 1999


Authors' Addresses

  Ruth Moulton
  Consultant
  65 Tetherdown
  London N10 1NH
  United Kingdom

  Phone: +44 (181) 883 5823
  EMail: [email protected]


  Mark H Needleman
  Data Research Associates, Inc.
  1276 North Warson Road
  P.O. Box 8495
  St Louis, MO 63132-1806
  USA

  Phone: (80)0 325-0888 (US/Canada)
         (314) 432-1100 x318
  Fax:   (314) 993-8927
  Email: [email protected]




























Moulton & Needleman          Informational                      [Page 5]

RFC 2503              ISO ILL Protocol MIME Types          February 1999


Full Copyright Statement

  Copyright (C) The Internet Society (1999).  All Rights Reserved.

  This document and translations of it may be copied and furnished to
  others, and derivative works that comment on or otherwise explain it
  or assist in its implementation may be prepared, copied, published
  and distributed, in whole or in part, without restriction of any
  kind, provided that the above copyright notice and this paragraph are
  included on all such copies and derivative works.  However, this
  document itself may not be modified in any way, such as by removing
  the copyright notice or references to the Internet Society or other
  Internet organizations, except as needed for the purpose of
  developing Internet standards in which case the procedures for
  copyrights defined in the Internet Standards process must be
  followed, or as required to translate it into languages other than
  English.

  The limited permissions granted above are perpetual and will not be
  revoked by the Internet Society or its successors or assigns.

  This document and the information contained herein is provided on an
  "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
  TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
  BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
  HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
  MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
























Moulton & Needleman          Informational                      [Page 6]