MIME Types for Use with the ISO ILL Protocol
RFC 2503

Document Type RFC - Informational (February 1999; No errata)
Was draft-needleman-mime-ill (individual)
Authors Ruth Moulton  , Mark Needleman 
Last updated 2013-03-02
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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.


   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

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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:


   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

   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:


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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.


   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;


   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
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