





Network Working Group                                          P. Barker
Request for Comments: 1274                                      S. Kille
                                               University College London
                                                           November 1991


                  The COSINE and Internet X.500 Schema

Status of this Memo

   This RFC specifies an IAB standards track protocol for the Internet
   community, and requests discussion and suggestions for improvements.
   Please refer to the current edition of the "IAB Official Protocol
   Standards" for the standardization state and status of this protocol.
   Distribution of this memo is unlimited.

Abstract

   This document suggests an X.500 Directory Schema, or Naming
   Architecture, for use in the COSINE and Internet X.500 pilots.  The
   schema is independent of any specific implementation.  As well as
   indicating support for the standard object classes and attributes, a
   large number of generally useful object classes and attributes are
   also defined.  An appendix to this document includes a machine
   processable version of the schema.

   This document also proposes a mechanism for allowing the schema to
   evolve in line with emerging requirements.  Proformas to support this
   process are included.

   Corrections and additions to the schema should be sent to na-
   update@cs.ucl.ac.uk list, as described within.

1.  Introduction

   Directory Services are a fundamental requirement of both human and
   computer communications' systems.  Human users need to be able to
   look up various details about other people: for example, telephone
   numbers, facsimile numbers and paper mail addresses.  Computing
   systems also need Directory Services for several purposes: for
   example, to support address look-ups for a variety of services, and
   to support user-friendly naming and distribution lists in electronic
   mail systems.

   Directory Services have recently been standardised and published as
   the 1988 CCITT X.500 / ISO IS9594 recommendations [1].  The standard
   provides a good basis for the provision of real services, and a
   considerable amount of Directory Service piloting activity is



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   currently underway.  In the U.S., the PSI White Pages Pilot [4] has
   stimulated use of X.500 on the Internet.  In Britain, the U.K.
   Academic Community Directory Pilot [5] is similarly promoting use of
   X.500.

2.  Motivation and aims of this document

   In a number of areas the X.500 standard only provides a basis for
   services.  One such area is the Directory's Schema or Naming
   Architecture.  The standard defines a number of useful object
   classes, in X.521, and attribute types, in X.520.  These are intended
   to be generally useful across a range of directory applications.
   However, while these standard definitions are a useful starting
   point, they are insufficient as a basis for a large scale pilot
   directory.

   While it is possible for directory administrators to define their own
   sets of additional attribute types and object classes, this is
   undesirable for some common attributes and objects.  The same objects
   and attribute types would be privately defined many times over.  This
   would result in the directory's generality being diminished as remote
   systems would be unable to determine the semantics of these privately
   defined data types.

   A number of useful additions to the standard definitions were made in
   this note's forerunner, "The THORN and RARE Naming Architecture" [2].
   These have been heavily used in early X.500 piloting activities.
   Furthermore, both the THORN and Quipu X.500 implementations have made
   use of these definitions.

   Since the afore-mentioned note was issued, a number of further
   requirements have come to light as the volume and variety of piloting
   activity has increased.  Yet further requirements seem likely as the
   scale of X.500 pilot services increases.  Thus, it is argued that it
   is not sufficient to merely reissue an updated version of the
   original note. The schema is a "living document" that needs
   procedures for:

      - Allowing submission of requests for new attributes and
        object classes to be added into the schema;

      - Allowing groups of object classes and attribute types
        defined elsewhere to be integrated into the schema.

      - Checking for the redundancy of any previously defined
        attribute types and object classes.

   This document attempts to establish procedures to allow for the



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   continual updating of the schema.  Two proformas are set out for this
   purpose.  In addition, descriptive detail is provided for the
   additional object classes and attribute types defined in the schema.
   These descriptions follow the style used in X.520 and X.521.
   Finally, also following the style adopted in the standards documents,
   appendices will include the entire schema.  Plain text versions of
   the document's appendices are intended to be machine processable to
   allow derivation of a system's schema tables.  Appendix C lists all
   the schema's object classes and attribute types in their respective
   ASN.1 macro formats.

   The scope and intended remit of this coordination activity should be
   clearly understood.

      - Esoteric and local, highly experimental requirements  should
        continue to be met by private definitions.

      - Requirements which have support from more than one site will
        usually be integrated into the schema.  Put in other words,
        the tendency will be for the inclusion, as opposed to the
        exclusion, of useful additions to the schema.

      - An attempt will be made to avoid duplication of object
        classes and attribute types for essentially similar real
        world objects.

3.  What conformance to this schema means

   It is not reasonable to require that a DSA which supports this schema
   has specific code to handle each of the defined syntaxes.  However,
   the following requirements are made of a system which claims
   conformance to this specification:

      1. A DSA shall be able to store all of the attributes and
         object class values specified.  (Note that this implies
         support for all the object classes and attribute types
         required by strong authentication as defined in X.509.)

      2. A DUA shall be able to identify each attribute type and
         object class to the user, with an appropriate representation
         (e.g., a string).

      3. These statement are qualified for large attributes values
         (>1kbyte).  A conforming DSA does not have to store such
         attribute values, and a DUA does not have to display such
         values, although it must indicate their presence.

   The following are desirable, but not required:



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      1. For a DSA to match correctly on the basis of all attribute
         syntaxes defined

      2. For a DSA to enforce the Object Class schema implied by
         these definitions

      3. For a DUA to correctly display the attribute values
         (syntaxes) defined

      4. For DUAs and DSAs to maintain compatibility with a previous
         version of the schema.

4.  Requesting new object classes and attribute types

   This section defines procedures for requesting new object classes and
   attribute types to be added to the schema.  Proformas for object
   classes and attribute types are specified, and examples given of how
   to use them.  A mechanism for making requests for large groups of new
   object classes and attribute types is described in the next section.

   As stated earlier, it is anticipated that the schema will evolve
   considerably over time.  As X.500 is used to support a widening range
   of applications, there will be requirements for extensions to the
   schema.  This document proposes formalising this procedure by
   requiring requests for additions to the schema to be submitted as
   completed proformas.  This stipulation will greatly simplify
   subsequent revisions of the schema.

   There is one qualification to the above with respect to requests for
   modifications to an existing object class.  If a modification to an
   object class merely involves additional, optional attributes, the
   object class will be enhanced as requested.  Systems are expected to
   be resilient to such changes to the schema.  However, requests to
   modify an object class, such that the mandatory attribute types
   require altering, will not be met.  Instead, a new object class will
   be created, and the original object class expired following the
   scheme described in the next main section.

   It is anticipated that most requests for modifications to the schema
   will be met without any need for editorial intervention.  Sometimes,
   however, some discussion between the submitter of a request and the
   schema's editor may be required.  For example, the editor may have to
   judge the relative merits of two very similar requests and, as a
   result, one of the parties may not get quite what they want.  In
   cases such as this where the submitter of a request feels aggrieved
   about an editorial decision, the requestor may appeal to a broader
   community by explaining their views to the mailing list osi-
   ds@cs.ucl.ac.uk.  Heed will be paid to any consensus that emerges



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   from discussions on the schema on this list.  If it proves that this
   list is used almost solely for discussions on schema issues, a
   separate discussion list will be created.

   To facilitate the production of the afore-mentioned proformas, tools
   are included in Appendix B which will verify that a proforma has been
   correctly formatted.

   Completed proformas should be mailed to na-update@cs.ucl.ac.uk

4.1.  Object Class proforma

   This section gives an example, completed proforma for a new object
   class, alcoholic drink.  A proforma for object class specified in BNF
   is included in Appendix A.

     Object Class: Alcoholic Drink

     Description: The Alcoholic Drink object class is used to define
     entries representing intoxicating beverages.

     ASN1OCMacro: alcoholicDrink OBJECT-CLASS
         SUBCLASS OF drink
         MUST CONTAIN {
             percentAlcohol}
         MAY CONTAIN {
             normalServing,
             hue}

   An object class description consists of three fields, separated by
   blank lines.  The keywords Object Class, Description and ASN1OCMacro,
   and their suffixed colons, must be included exactly as above.

   The Object Class field should be used for a textual description of
   the object class.  This will be at most three or four words.

   The Description field should contain some explanatory text about the
   intended use of the object class.  This can run to a number of lines.

   The ASN1OCMacro field should follow the definition of the object
   class macro as specified in X.501.  The above example shows the main
   features.  There are many more examples which can studied in the
   section defining the Pilot Object Classes.

4.2.  Attribute type proforma

   This section gives an example completed proforma for a new attribute
   type, hue (one of the attribute types in the alcoholic drink object



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   class).

     Attribute Type: Hue

     Description: The Hue attribute type specifies the hue of
     an object.  (Note that a description may run to several
     lines.)

     OCMust:

     OCMay: alcoholicDrink

     ASN1ATMacro:hue ATTRIBUTE
         WITH ATTRIBUTE SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-hue))

     ub-hue INTEGER ::= 256

   An attribute type description consists of five fields, separated by
   blank lines.  The keywords Attribute Type, Description, OCMust, OCMay
   and ASN1ATMacro, and their suffixed colons, must be included exactly
   as above.

   The Attribute Type field should be used for a textual description of
   the attribute type.  This will be at most three or four words.

   The Description field should contain some explanatory text about the
   intended use of the attribute type.  This can run to a number of
   lines.

   The OCMust field should contain a comma-separated list of object
   classes for which this attribute is mandatory.

   The OCMay field should contain a comma-separated list of object
   classes for which this attribute is optional.

   The ASN1ATMacro field should follow the definition of the attribute
   macro as specified in X.501. The above example shows some of the
   features.  In particular, please note the format for specifying size
   constraints.

5.  Integrating groups of object classes and attribute types.

   This section describes two mechanisms that may be employed to allow
   the integration of a substantial number of new object classes and
   attribute types into the schema.




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   The first mechanism allows for the transition of groups of related,
   privately defined object classes and attribute types into the schema.
   An example of when such a transition might be appropriate is when
   some experimental use of the Directory is widely adopted within the
   pilot.  Such a transition will be made if the following conditions
   hold:

      - The definitions are well structured: i.e., they are not
        scattered over a multiplicity of object identifier subtrees.

      - The definitions are in use at a number of sites, and having
        to adopt new object identifiers would be unnecessarily
        disruptive.

   A second mechanism allows for the allocation of an object subtree for
   a group of new definitions.  A pilotGroups object identifier has been
   defined for this purpose.  This method will be suitable for an
   experiment requiring a considerable number of new object identifiers
   to be defined.  This approach allows for flexibility during
   experimentation and should simplify both the management and the
   coherence of the pilot's object identifiers.

   In both cases, the object classes, attribute types and syntaxes
   should be defined and described in an RFC.  It is suggested that such
   documents should follow the style used in this document for object
   class and attribute type definitions.  A reference will be given in
   this schema to the document containing the definitions.

6.  Removing "old" object classes and attribute types.

   It is also important that object classes and attribute types which
   are no longer used or useful are removed from the schema.  Some
   object classes and attribute types initially defined as pilot
   extensions may be included as standard definitions in future versions
   of the standard.  In such a case, it is important that there should
   be a fairly rapid transition to the standard definitions.  Another
   possibility is that newer, more specific definitions obviate the
   original definitions.

   Two things are essential.  First, it is crucial that "old"
   definitions are retired as gracefully as possible.  The intention to
   retire a definition will be sent to the osi-ds@cs.ucl.ac.uk mail
   list.  In the absence of objections, the definition will be marked
   for expiry with a given expiry date.  The definition will remain in
   the schema until the expiry date.  Users of the schema should ensure
   that they make the transition to new, alternative definitions in the
   interim.




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   Second, users of the schema must have the right to argue for the
   retention of definitions which they regard as necessary, there being
   no other definitions which closely meet their requirements.  It is
   clearly impossible to lay down hard and fast rules on this point, as
   no two instances will ever be quite the same.  It is intended that
   the refereeing on these matters will be sympathetic!  As for requests
   for additions, an aggrieved user can "go to arbitration" by
   initiating a discussion on the osi-ds@cs.ucl.ac.uk mail list.

7.  Object Identifiers

   Some additional object identifiers are defined for this schema.
   These are also reproduced in Appendix C.

     data OBJECT IDENTIFIER ::= {ccitt 9}
     pss OBJECT IDENTIFIER ::= {data 2342}
     ucl OBJECT IDENTIFIER ::= {pss 19200300}
     pilot OBJECT IDENTIFIER ::= {ucl 100}

     pilotAttributeType OBJECT IDENTIFIER ::= {pilot 1}
     pilotAttributeSyntax OBJECT IDENTIFIER ::= {pilot 3}
     pilotObjectClass OBJECT IDENTIFIER ::= {pilot 4}
     pilotGroups OBJECT IDENTIFIER ::= {pilot 10}

     iA5StringSyntax OBJECT IDENTIFIER ::= {pilotAttributeSyntax 4}
     caseIgnoreIA5StringSyntax OBJECT IDENTIFIER ::=
                                           {pilotAttributeSyntax 5}

8.  Object Classes

8.1.  X.500 standard object classes

   A number of generally useful object classes are defined in X.521, and
   these are supported.  Refer to that document for descriptions of the
   suggested usage of these object classes.  The ASN.1 for these object
   classes is reproduced for completeness in Appendix C.

8.2.  X.400 standard object classes

   A number of object classes defined in X.400 are supported.  Refer to
   X.402 for descriptions of the usage of these object classes.  The
   ASN.1 for these object classes is reproduced for completeness in
   Appendix C.

8.3.  COSINE/Internet object classes

   This section attempts to fuse together the object classes designed
   for use in the COSINE and Internet pilot activities.  Descriptions



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   are given of the suggested usage of these object classes.  The ASN.1
   for these object classes is also reproduced in Appendix C.

8.3.1.  Pilot Object

   The PilotObject object class is used as a sub-class to allow some
   common, useful attributes to be assigned to entries of all other
   object classes.

     pilotObject OBJECT-CLASS
         SUBCLASS OF top
         MAY CONTAIN {
             info,
             photo,
             manager,
             uniqueIdentifier,
             lastModifiedTime,
             lastModifiedBy,
             dITRedirect,
             audio}
     ::= {pilotObjectClass 3}

8.3.2.  Pilot Person

   The PilotPerson object class is used as a sub-class of person, to
   allow the use of a number of additional attributes to be assigned to
   entries of object class person.

     pilotPerson OBJECT-CLASS
         SUBCLASS OF person
         MAY CONTAIN {
                     userid,
                     textEncodedORAddress,
                     rfc822Mailbox,
                     favouriteDrink,
                     roomNumber,
                     userClass,
                     homeTelephoneNumber,
                     homePostalAddress,
                     secretary,
                     personalTitle,
                     preferredDeliveryMethod,
                     businessCategory,
                     janetMailbox,
                     otherMailbox,
                     mobileTelephoneNumber,
                     pagerTelephoneNumber,
                     organizationalStatus,



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                     mailPreferenceOption,
                     personalSignature}
     ::= {pilotObjectClass 4}

8.3.3.  Account

   The Account object class is used to define entries representing
   computer accounts.  The userid attribute should be used for naming
   entries of this object class.

     account OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             userid}
         MAY CONTAIN {
             description,
             seeAlso,
             localityName,
             organizationName,
             organizationalUnitName,
             host}
     ::= {pilotObjectClass 5}

8.3.4.  Document

   The Document object class is used to define entries which represent
   documents.

     document OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             documentIdentifier}
         MAY CONTAIN {
             commonName,
             description,
             seeAlso,
             localityName,
             organizationName,
             organizationalUnitName,
             documentTitle,
             documentVersion,
             documentAuthor,
             documentLocation,
             documentPublisher}
     ::= {pilotObjectClass 6}






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8.3.5.  Room

   The Room object class is used to define entries representing rooms.
   The commonName attribute should be used for naming pentries of this
   object class.

     room OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             commonName}
         MAY CONTAIN {
             roomNumber,
             description,
             seeAlso,
             telephoneNumber}
     ::= {pilotObjectClass 7}

8.3.6.  Document Series

   The Document Series object class is used to define an entry which
   represents a series of documents (e.g., The Request For Comments
   papers).

     documentSeries OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             commonName}
         MAY CONTAIN {
             description,
             seeAlso,
             telephoneNumber,
             localityName,
             organizationName,
             organizationalUnitName}
     ::= {pilotObjectClass 9}

8.3.7.  Domain

   The Domain object class is used to define entries which represent DNS
   or NRS domains.  The domainComponent attribute should be used for
   naming entries of this object class.  The usage of this object class
   is described in more detail in [3].

     domain OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             domainComponent}
         MAY CONTAIN {



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             associatedName,
             organizationName,
             organizationalAttributeSet}
     ::= {pilotObjectClass 13}

8.3.8.  RFC822 Local Part

   The RFC822 Local Part object class is used to define entries which
   represent the local part of RFC822 mail addresses.  This treats this
   part of an RFC822 address as a domain.  The usage of this object
   class is described in more detail in [3].

     rFC822localPart OBJECT-CLASS
         SUBCLASS OF domain
         MAY CONTAIN {
             commonName,
             surname,
             description,
             seeAlso,
             telephoneNumber,
             postalAttributeSet,
             telecommunicationAttributeSet}
     ::= {pilotObjectClass 14}

8.3.9.  DNS Domain

   The DNS Domain (Domain NameServer) object class is used to define
   entries for DNS domains.  The usage of this object class is described
   in more detail in [3].

     dNSDomain OBJECT-CLASS
         SUBCLASS OF domain
         MAY CONTAIN {
             ARecord,
             MDRecord,
             MXRecord,
             NSRecord,
             SOARecord,
             CNAMERecord}
     ::= {pilotObjectClass 15}

8.3.10.  Domain Related Object

   The Domain Related Object object class is used to define entries
   which represent DNS/NRS domains which are "equivalent" to an X.500
   domain: e.g., an organisation or organisational unit.  The usage of
   this object class is described in more detail in [3].




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     domainRelatedObject OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             associatedDomain}
     ::= {pilotObjectClass 17}

8.3.11.  Friendly Country

   The Friendly Country object class is used to define country entries
   in the DIT.  The object class is used to allow friendlier naming of
   countries than that allowed by the object class country.  The naming
   attribute of object class country, countryName, has to be a 2 letter
   string defined in ISO 3166.

     friendlyCountry OBJECT-CLASS
         SUBCLASS OF country
         MUST CONTAIN {
             friendlyCountryName}
     ::= {pilotObjectClass 18}

8.3.12.  Simple Security Object

   The Simple Security Object object class is used to allow an entry to
   have a userPassword attribute when an entry's principal object
   classes do not allow userPassword as an attribute type.

     simpleSecurityObject OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             userPassword }
     ::= {pilotObjectClass 19}

8.3.13.  Pilot Organization

   The PilotOrganization object class is used as a sub-class of
   organization and organizationalUnit to allow a number of additional
   attributes to be assigned to entries of object classes organization
   and organizationalUnit.

     pilotOrganization OBJECT-CLASS
         SUBCLASS OF organization, organizationalUnit
         MAY CONTAIN {
                     buildingName}
     ::= {pilotObjectClass 20}







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8.3.14.  Pilot DSA

   The PilotDSA object class is used as a sub-class of the dsa object
   class to allow additional attributes to be assigned to entries for
   DSAs.

     pilotDSA OBJECT-CLASS
         SUBCLASS OF dsa
         MUST CONTAIN {
             dSAQuality}
     ::= {pilotObjectClass 21}

8.3.15.  Quality Labelled Data

   The Quality Labelled Data object class is used to allow the
   assignment of the data quality attributes to subtrees in the DIT.

   See [8] for more details.

     qualityLabelledData OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             dSAQuality}
         MAY CONTAIN {
             subtreeMinimumQuality,
             subtreeMaximumQuality}
     ::= {pilotObjectClass 22}

9.  Attribute Types

9.1.  X.500 standard attribute types

   A number of generally useful attribute types are defined in X.520,
   and these are supported.  Refer to that document for descriptions of
   the suggested usage of these attribute types.  The ASN.1 for these
   attribute types is reproduced for completeness in Appendix C.

9.2.  X.400 standard attribute types

   The standard X.400 attribute types are supported.  See X.402 for full
   details.  The ASN.1 for these attribute types is reproduced in
   Appendix C.

9.3.  COSINE/Internet attribute types

   This section describes all the attribute types defined for use in the
   COSINE and Internet pilots.  Descriptions are given as to the
   suggested usage of these attribute types.  The ASN.1 for these



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   attribute types is reproduced in Appendix C.

9.3.1.  Userid

   The Userid attribute type specifies a computer system login name.

     userid ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-user-identifier))
     ::= {pilotAttributeType 1}

9.3.2.  Text Encoded O/R Address

   The Text Encoded O/R Address attribute type specifies a text encoding
   of an X.400 O/R address, as specified in RFC 987.  The use of this
   attribute is deprecated as the attribute is intended for interim use
   only.  This attribute will be the first candidate for the attribute
   expiry mechanisms!

     textEncodedORAddress ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
         (SIZE (1 .. ub-text-encoded-or-address))
     ::= {pilotAttributeType 2}

9.3.3.  RFC 822 Mailbox

   The RFC822 Mailbox attribute type specifies an electronic mailbox
   attribute following the syntax specified in RFC 822.  Note that this
   attribute should not be used for greybook or other non-Internet order
   mailboxes.

     rfc822Mailbox ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreIA5StringSyntax
             (SIZE (1 .. ub-rfc822-mailbox))
     ::= {pilotAttributeType 3}

9.3.4.  Information

   The Information attribute type specifies any general information
   pertinent to an object.  It is recommended that specific usage of
   this attribute type is avoided, and that specific requirements are
   met by other (possibly additional) attribute types.

     info ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX



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             caseIgnoreStringSyntax
             (SIZE (1 .. ub-information))
     ::= {pilotAttributeType 4}

9.3.5.  Favourite Drink

   The Favourite Drink attribute type specifies the favourite drink of
   an object (or person).

     favouriteDrink ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-favourite-drink))
     ::= {pilotAttributeType 5}

9.3.6.  Room Number

   The Room Number attribute type specifies the room number of an
   object.  Note that the commonName attribute should be used for naming
   room objects.

     roomNumber ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-room-number))
     ::= {pilotAttributeType 6}

9.3.7.  Photo

   The Photo attribute type specifies a "photograph" for an object.
   This should be encoded in G3 fax as explained in recommendation T.4,
   with an ASN.1 wrapper to make it compatible with an X.400 BodyPart as
   defined in X.420.

     IMPORT  G3FacsimileBodyPart  FROM  {   mhs-motis   ipms   modules
     information-objects }

     photo ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             CHOICE {
                 g3-facsimile [3] G3FacsimileBodyPart
                 }
         (SIZE (1 .. ub-photo))
     ::= {pilotAttributeType 7}







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9.3.8.  User Class

   The User Class attribute type specifies a category of computer user.
   The semantics placed on this attribute are for local interpretation.
   Examples of current usage od this attribute in academia are
   undergraduate student, researcher, lecturer, etc.  Note that the
   organizationalStatus attribute may now often be preferred as it makes
   no distinction between computer users and others.

     userClass ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-user-class))
     ::= {pilotAttributeType 8}

9.3.9.  Host

   The Host attribute type specifies a host computer.

     host ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-host))
     ::= {pilotAttributeType 9}

9.3.10.  Manager

   The Manager attribute type specifies the manager of an object
   represented by an entry.

     manager ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             distinguishedNameSyntax
     ::= {pilotAttributeType 10}

9.3.11.  Document Identifier

   The Document Identifier attribute type specifies a unique identifier
   for a document.

     documentIdentifier ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-document-identifier))
     ::= {pilotAttributeType 11}






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9.3.12.  Document Title

   The Document Title attribute type specifies the title of a document.

     documentTitle ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
         (SIZE (1 .. ub-document-title))
     ::= {pilotAttributeType 12}

9.3.13.  Document Version

   The Document Version attribute type specifies the version number of a
   document.

     documentVersion ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-document-version))
     ::= {pilotAttributeType 13}

9.3.14.  Document Author

   The Document Author attribute type specifies the distinguished name
   of the author of a document.

     documentAuthor ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             distinguishedNameSyntax
     ::= {pilotAttributeType 14}

9.3.15.  Document Location

   The Document Location attribute type specifies the location of the
   document original.

     documentLocation ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-document-location))
     ::= {pilotAttributeType 15}

9.3.16.  Home Telephone Number

   The Home Telephone Number attribute type specifies a home telephone
   number associated with a person.  Attribute values should follow the
   agreed format for international telephone numbers: i.e., "+44 71 123
   4567".



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     homeTelephoneNumber ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             telephoneNumberSyntax
     ::= {pilotAttributeType 20}

9.3.17.  Secretary

   The Secretary attribute type specifies the secretary of a person.
   The attribute value for Secretary is a distinguished name.

     secretary ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             distinguishedNameSyntax
     ::= {pilotAttributeType 21}

9.3.18.  Other Mailbox

   The Other Mailbox attribute type specifies values for electronic
   mailbox types other than X.400 and rfc822.

     otherMailbox ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             SEQUENCE {
                     mailboxType PrintableString, -- e.g. Telemail
                     mailbox IA5String  -- e.g. X378:Joe
             }
     ::= {pilotAttributeType 22}

9.3.19.  Last Modified Time

   The Last Modified Time attribute type specifies the last time, in UTC
   time, that an entry was modified.  Ideally, this attribute should be
   maintained by the DSA.

     lastModifiedTime ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             uTCTimeSyntax
     ::= {pilotAttributeType 23}

9.3.20.  Last Modified By

   The Last Modified By attribute specifies the distinguished name of
   the last user to modify the associated entry.  Ideally, this
   attribute should be maintained by the DSA.

     lastModifiedBy ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             distinguishedNameSyntax



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     ::= {pilotAttributeType 24}

9.3.21.  Domain Component

   The Domain Component attribute type specifies a DNS/NRS domain.  For
   example, "uk" or "ac".

     domainComponent ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreIA5StringSyntax
             SINGLE VALUE
     ::= {pilotAttributeType 25}

 9.3.22.  DNS ARecord

   The A Record attribute type specifies a type A (Address) DNS resource
   record [6] [7].

     aRecord ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             DNSRecordSyntax
     ::= {pilotAttributeType 26}

9.3.23.  MX Record

   The MX Record attribute type specifies a type MX (Mail Exchange) DNS
   resource record [6] [7].

     mXRecord ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             DNSRecordSyntax
     ::= {pilotAttributeType 28}

9.3.24.  NS Record

   The NS Record attribute type specifies an NS (Name Server) DNS
   resource record [6] [7].

     nSRecord ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             DNSRecordSyntax
     ::= {pilotAttributeType 29}

9.3.25.  SOA Record

   The SOA Record attribute type specifies a type SOA (Start of
   Authority) DNS resorce record [6] [7].




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     sOARecord ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             DNSRecordSyntax
     ::= {pilotAttributeType 30}

9.3.26.  CNAME Record

   The CNAME Record attribute type specifies a type CNAME (Canonical
   Name) DNS resource record [6] [7].

     cNAMERecord ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             iA5StringSyntax
     ::= {pilotAttributeType 31}

9.3.27.  Associated Domain

   The Associated Domain attribute type specifies a DNS or NRS domain
   which is associated with an object in the DIT. For example, the entry
   in the DIT with a distinguished name "C=GB, O=University College
   London" would have an associated domain of "UCL.AC.UK.  Note that all
   domains should be represented in rfc822 order.  See [3] for more
   details of usage of this attribute.

     associatedDomain ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreIA5StringSyntax
     ::= {pilotAttributeType 37}

9.3.28.  Associated Name

   The Associated Name attribute type specifies an entry in the
   organisational DIT associated with a DNS/NRS domain.  See [3] for
   more details of usage of this attribute.

     associatedName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             distinguishedNameSyntax
     ::= {pilotAttributeType 38}

9.3.29.  Home postal address

   The Home postal address attribute type specifies a home postal
   address for an object.  This should be limited to up to 6 lines of 30
   characters each.

     homePostalAddress ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX



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             postalAddress
             MATCHES FOR EQUALITY
     ::= {pilotAttributeType 39}

9.3.30.  Personal Title

   The Personal Title attribute type specifies a personal title for a
   person. Examples of personal titles are "Ms", "Dr", "Prof" and "Rev".

     personalTitle ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-personal-title))
     ::= {pilotAttributeType 40}

9.3.31.  Mobile Telephone Number

   The Mobile Telephone Number attribute type specifies a mobile
   telephone number associated with a person.  Attribute values should
   follow the agreed format for international telephone numbers: i.e.,
   "+44 71 123 4567".

     mobileTelephoneNumber ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             telephoneNumberSyntax
     ::= {pilotAttributeType 41}

9.3.32.  Pager Telephone Number

   The Pager Telephone Number attribute type specifies a pager telephone
   number for an object. Attribute values should follow the agreed
   format for international telephone numbers: i.e., "+44 71 123 4567".

     pagerTelephoneNumber ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             telephoneNumberSyntax
     ::= {pilotAttributeType 42}

9.3.33.  Friendly Country Name

   The Friendly Country Name attribute type specifies names of countries
   in human readable format.  The standard attribute country name must
   be one of the two-letter codes defined in ISO 3166.

     friendlyCountryName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
     ::= {pilotAttributeType 43}



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9.3.34.  Unique Identifier

   The Unique Identifier attribute type specifies a "unique identifier"
   for an object represented in the Directory.  The domain within which
   the identifier is unique, and the exact semantics of the identifier,
   are for local definition.  For a person, this might be an
   institution-wide payroll number.  For an organisational unit, it
   might be a department code.

     uniqueIdentifier ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-unique-identifier))
     ::= {pilotAttributeType 44}

9.3.35.  Organisational Status

   The Organisational Status attribute type specifies a category by
   which a person is often referred to in an organisation.  Examples of
   usage in academia might include undergraduate student, researcher,
   lecturer, etc.

   A Directory administrator should probably consider carefully the
   distinctions between this and the title and userClass attributes.

     organizationalStatus ATTRIBUTE
             WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-organizational-status))
     ::= {pilotAttributeType 45}

9.3.36.  Janet Mailbox

   The Janet Mailbox attribute type specifies an electronic mailbox
   attribute following the syntax specified in the Grey Book of the
   Coloured Book series.  This attribute is intended for the convenience
   of U.K users unfamiliar with rfc822 and little-endian mail addresses.
   Entries using this attribute MUST also include an rfc822Mailbox
   attribute.

     janetMailbox ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreIA5StringSyntax
             (SIZE (1 .. ub-janet-mailbox))
     ::= {pilotAttributeType 46}






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9.3.37.  Mail Preference Option

   An attribute to allow users to indicate a preference for inclusion of
   their names on mailing lists (electronic or physical).  The absence
   of such an attribute should be interpreted as if the attribute was
   present with value "no-list-inclusion".  This attribute should be
   interpreted by anyone using the directory to derive mailing lists,
   and its value respected.

     mailPreferenceOption ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX ENUMERATED {
                 no-list-inclusion(0),
                 any-list-inclusion(1),  -- may be added to any lists
                 professional-list-inclusion(2)
                                         -- may be added to lists
                                         -- which the list provider
                                         -- views as related to the
                                         -- users professional inter-
                                         -- ests, perhaps evaluated
                                         -- from the business of the
                                         -- organisation or keywords
                                         -- in the entry.
                 }
     ::= {pilotAttributeType 47}

9.3.38.  Building Name

   The Building Name attribute type specifies the name of the building
   where an organisation or organisational unit is based.

     buildingName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-building-name))
     ::= {pilotAttributeType 48}

9.3.39.  DSA Quality

   The DSA Quality attribute type specifies the purported quality of a
   DSA.  It allows a DSA manager to indicate the expected level of
   availability of the DSA. See [8] for details of the syntax.

     dSAQuality ATTRIBUTE
             WITH ATTRIBUTE-SYNTAX DSAQualitySyntax
             SINGLE VALUE
     ::= {pilotAttributeType 49}





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9.3.40.  Single Level Quality

   The Single Level Quality attribute type specifies the purported data
   quality at the level immediately below in the DIT.  See [8] for
   details of the syntax.

     singleLevelQuality ATTRIBUTE
             WITH ATTRIBUTE-SYNTAX DataQualitySyntax
             SINGLE VALUE
     ::= {pilotAttributeType 50}

9.3.41.  Subtree Minimum Quality

   The Subtree Minimum Quality attribute type specifies the purported
   minimum data quality for a DIT subtree.  See [8] for more discussion
   and details of the syntax.

     subtreeMinimumQuality ATTRIBUTE
             WITH ATTRIBUTE-SYNTAX DataQualitySyntax
             SINGLE VALUE
                -- Defaults to singleLevelQuality
     ::= {pilotAttributeType 51}

9.3.42.  Subtree Maximum Quality

   The Subtree Maximum Quality attribute type specifies the purported
   maximum data quality for a DIT subtree.  See [8] for more discussion
   and details of the syntax.

     subtreeMaximumQuality ATTRIBUTE
             WITH ATTRIBUTE-SYNTAX DataQualitySyntax
             SINGLE VALUE
                -- Defaults to singleLevelQuality
     ::= {pilotAttributeType 52}

9.3.43.  Personal Signature

   The Personal Signature attribute type allows for a representation of
   a person's signature.  This should be encoded in G3 fax as explained
   in recommendation T.4, with an ASN.1 wrapper to make it compatible
   with an X.400 BodyPart as defined in X.420.

     IMPORT  G3FacsimileBodyPart  FROM  {   mhs-motis   ipms   modules
     information-objects }

     personalSignature ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             CHOICE {



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                 g3-facsimile [3] G3FacsimileBodyPart
                 }
         (SIZE (1 .. ub-personal-signature))
     ::= {pilotAttributeType 53}

9.3.44.  DIT Redirect

   The DIT Redirect attribute type is used to indicate that the object
   described by one entry now has a newer entry in the DIT.  The entry
   containing the redirection attribute should be expired after a
   suitable grace period.  This attribute may be used when an individual
   changes his/her place of work, and thus acquires a new organisational
   DN.

     dITRedirect ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             distinguishedNameSyntax
     ::= {pilotAttributeType 54}

9.3.45.  Audio

   The Audio attribute type allows the storing of sounds in the
   Directory.  The attribute uses a u-law encoded sound file as used by
   the "play" utility on a Sun 4.  This is an interim format.

     audio ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             Audio
         (SIZE (1 .. ub-audio))
     ::= {pilotAttributeType 55}

9.3.46.  Publisher of Document


   The Publisher of Document attribute is the person and/or organization
   that published a document.

     documentPublisher ATTRIBUTE
             WITH ATTRIBUTE SYNTAX caseIgnoreStringSyntax
     ::= {pilotAttributeType 56}

9.4.  Generally useful syntaxes

     caseIgnoreIA5StringSyntax ATTRIBUTE-SYNTAX
             IA5String
             MATCHES FOR EQUALITY SUBSTRINGS





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     iA5StringSyntax ATTRIBUTE-SYNTAX
         IA5String
         MATCHES FOR EQUALITY SUBSTRINGS


     -- Syntaxes to support the DNS attributes

     DNSRecordSyntax ATTRIBUTE-SYNTAX
             IA5String
             MATCHES FOR EQUALITY


     NRSInformationSyntax ATTRIBUTE-SYNTAX
             NRSInformation
             MATCHES FOR EQUALITY


     NRSInformation ::=  SET {
                     [0] Context,
                     [1] Address-space-id,
                     routes [2] SEQUENCE OF SEQUENCE {
                     Route-cost,
                     Addressing-info }
             }


9.5.  Upper bounds on length of attribute values


     ub-document-identifier INTEGER ::= 256

     ub-document-location INTEGER ::= 256

     ub-document-title INTEGER ::= 256

     ub-document-version INTEGER ::= 256

     ub-favourite-drink INTEGER ::= 256

     ub-host INTEGER ::= 256

     ub-information INTEGER ::= 2048

     ub-unique-identifier INTEGER ::= 256

     ub-personal-title INTEGER ::= 256

     ub-photo INTEGER ::= 250000



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     ub-rfc822-mailbox INTEGER ::= 256

     ub-room-number INTEGER ::= 256

     ub-text-or-address INTEGER ::= 256

     ub-user-class INTEGER ::= 256

     ub-user-identifier INTEGER ::= 256

     ub-organizational-status INTEGER ::= 256

     ub-janet-mailbox INTEGER ::= 256

     ub-building-name INTEGER ::= 256

     ub-personal-signature ::= 50000

     ub-audio INTEGER ::= 250000

References

     [1]  CCITT/ISO, "X.500, The Directory - overview of concepts,
          models and services, CCITT /ISO IS 9594.

     [2]  Kille, S., "The THORN and RARE X.500 Naming Architecture, in
          University College London, Department of Computer Science
          Research Note 89/48, May 1989.

     [3]  Kille, S., "X.500 and Domains", RFC 1279, University College
          London, November 1991.

     [4]  Rose, M., "PSI/NYSERNet White Pages Pilot Project: Status
          Report", Technical Report 90-09-10-1, published by NYSERNet
          Inc, 1990.

     [5]  Craigie, J., "UK Academic Community Directory Service Pilot
          Project, pp. 305-310 in Computer Networks and ISDN Systems
          17 (1989), published by North Holland.

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

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

     [8]  Kille, S., "Handling QOS (Quality of service) in the



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RFC 1274            COSINE and Internet X.500 Schema       November 1991


          Directory," publication in process, March 1991.

APPENDIX A - Object Class and Attribute Type proformas

   These are specified in BNF.  First some useful definitions, common to
   both proformas.

     EOL ::= -- the end of line character(s)

     BlankLine ::= -- a line consisting solely of an EOL character

     String ::= <anychar> | <String> <anychar>

     anychar ::= --any character occurring in general text, excluding
                 -- the end of line character

     lString ::= <lowercase> <otherstring>

     lowercase ::= [a-z]

     UString ::= <uppercase> <otherstring>

     uppercase ::= [A-Z]

     otherstring ::= <otherchar> | <otherstring> <otherchar>

     otherchar ::= <lowercase> | <uppercase> | <digit>

     Integer ::= <digit> | <Integer> <digit>

     digit ::= [0-9]

1.  Object Class


     OCProforma ::= <ObjectClassName> <BlankLine> <Description> \
                    <BlankLine> <OCMacro>

     ObjectClassName ::= "ObjectClass:" <String> <EOL>

     Description ::= "Description:" <DescriptiveText> <EOL>

     DescriptiveText ::= <String> | <DescriptiveText> <EOL> <String>

     OCMacro ::= "ASN1OCMacro:" <ObjectClassMacro>

     -- The definition of ObjectClassMacro is adapted from
     -- that given in X.501



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     ObjectClassMacro ::= <OCname> "OBJECT-CLASS" <SubclassOf> \
                          <MandatoryAttributes> <OptionalAttributes>

     OCName ::= <lString>

     SubclassOf ::= "SUBCLASS OF" Subclasses | <empty>

     Subclasses ::= <Subclass> | <Subclass> "," <Subclasses>

     Subclass ::= <OCName>

     MandatoryAttributes ::= "MUST CONTAIN {" <Attributes> "}" \
                             | <empty>
     OptionalAttributes ::= "MAY CONTAIN {" <Attributes> "}" | <empty>

     Attributes ::= <AttributeTerm> | <AttributeTerm> "," <Attributes>

     AttributeTerm ::= <Attribute> | <AttributeSet>

     Attribute ::= <lString>

     AttributeSet ::= <lString>

2.  Attribute Type


     ATProforma ::= <AttributeTypeName> <BlankLine> <Description> \
                    <BlankLine> <OCMust> <Blankline> <OCMay> \
                    <BlankLine> <ATMacro>

     AttributeTypeName ::= "Attribute Type:" <String> <EOL>

     Description ::= "Description:" <DescriptiveText> <EOL>

     DescriptiveText ::= <String> | <DescriptiveText> <EOL> <String>

     OCMust ::= "OCMust:" <OCList> <EOL>

     OCList ::= <OCName> | <OCList> "," <OCName> | <empty>

     OCMay ::= "OCMay:" <OCList> <EOL>

     ATMacro ::= "ASN1ATMacro:" <AttributeTypeMacro>

     -- The definition of AttributeTypeMacro is adapted from that
     -- given in X.501

     AttributeTypeMacro ::= <ATname> "ATTRIBUTE" <AttributeSyntax> \



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                            <Multivalued> | <empty>

     ATName ::= <lString>

     AttributeSyntax ::= "WITH ATTRIBUTE SYNTAX" SyntaxChoice

     SyntaxChoice ::= <Syntax> <Constraint> | <ASN1Type> <MatchTypes>

     Syntax ::= <lString>

     Constraint ::= "(" ConstraintAlternative ")" | <empty>

     ConstraintAlternative ::= StringConstraint | IntegerConstraint

     StringConstraint ::= "SIZE" "("  SizeConstraint ")"

     SizeConstraint ::= SingleValue | Range

     SingleValue ::= <Integer>

     Range ::= <Integer> ".." <Integer>

     IntegerConstraint ::= Range

     ASN1Type ::= <UString>
     -- one of ASN.1's base types: e.g. PrintableString,
     -- NumericString, etc.

     MatchTypes ::= "MATCHES FOR" Matches | <empty>

     Matches ::= Match | Matches Match

     Match ::= "EQUALITY" | "SUBSTRINGS" | "ORDERING"

     Multivalued ::= "SINGLE VALUE" | "MULTI VALUE" | <empty>

APPENDIX B - Format checking tools

   This section includes the source for format checking tools for the
   two proformas.  The tools are written as Bourne shell scripts for
   UNIX systems.

1.  Object class format checker


     sed 's/ *: */:/' |
     awk '
     BEGIN {



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             state = "initial"
     }

     /^$/ {
             next
     }

     /^Object Class:/ {
             n = index($0, ":")
             if (state != "initial")
             {
                     print "Already got object class " oc
                     print "Got another object class " substr($0, n+1)
                     state = "notOK"
                     exit 1
             }
             oc = substr($0, n+1)
             state = "gotOC"
             next
     }

     /^Description:/ {
             n = index($0, ":")
             if (state != "gotOC")
             {
                     print "Got Description: " substr($0, n+1)
                     for (i = 0; i < 2 && getline > 0; i++)
                             print $0
                     print "..."
                     if (state == "initial")
                             print "Expecting Object Class:"
                     else
                             print "Expecting ASN1OCMacro:"
                     state = "notOK"
                     exit 1
             }
             while (getline > 0)
                     if (length($0) > 0)
                             continue
                     else
                             break
             state = "gotDesc"
             next
     }

     /^ASN1OCMacro:/ {
             n = index($0, ":")
             if (state != "gotDesc")



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             {
                     print "Got ASN1Macro: " substr($0, n+1)
                     for (i = 0; i < 2 && getline > 0; i++)
                             print $0
                     print "..."
                     if (state == "initial")
                             print "Expecting Object Class:"
                     else
                             print "Expecting Description:"
                     state = "notOK"
                     exit 1
             }
             state = "OK"
             exit 0
     }

     {
             print "Parsing has got confused on seeing line: " $0
             state = "notOK"
             exit 1
     }

     END {
             if (state == "OK")
                     print "Input looks OK"
     }


2.  Attribute Type format checker


     sed 's/ *: */:/' |
     awk '
     BEGIN {
             state = "initial"
     }

     /^$/ {
             next
     }

     /^Attribute Type:/ {
             n = index($0, ":")
             if (state != "initial")
             {
                     got = "Attribute Type:"
                     exit 1
             }



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             state = "gotAT"
             next
     }

     /^Description:/ {
             n = index($0, ":")
             if (state != "gotAT")
             {
                     got = "Description:"
                     exit 1
             }
             while (getline > 0)
                     if (length($0) > 0)
                             continue
                     else
                             break
             state = "gotDesc"
             next
     }

     /^OCMust:/ {
             n = index($0, ":")
             if (state != "gotDesc")
             {
                     got = "OCMust:"
                     exit 1
             }
             state = "gotOCMust"
             next
     }

     /^OCMay:/ {
             n = index($0, ":")
             if (state != "gotOCMust")
             {
                     got = "OCMay:"
                     exit 1
             }
             state = "gotOCMay"
             next
     }

     /^ASN1ATMacro:/ {
             n = index($0, ":")
             if (state != "gotOCMay")
             {
                     got = "ASN1ATMacro:"
                     exit 1



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             }
             state = "OK"
             exit 0
     }

     {
             print "Parsing has got confused on seeing line: " $0
             state = "notOK"
             exit 1
     }

     END {
             if (state == "initial")
                     print "Expecting Attribute Type:"
             else if (state == "gotAT")
                     print "Expecting Description:"
             else if (state == "gotDesc")
                     print "Expecting OCMust:"
             else if (state == "gotOCMust")
                     print "Expecting OCMay:"
             else if (state == "gotOCMay")
                     print "Expecting ASN1ATMacro:"
             if (state != "OK")
                     print "Got " got
             else
                     print "Input looks OK"
     }


APPENDIX C - Summary of all Object Classes and Attribute Types

     -- Some Important Object Identifiers

     data OBJECT IDENTIFIER ::= {ccitt 9}
     pss OBJECT IDENTIFIER ::= {data 2342}
     ucl OBJECT IDENTIFIER ::= {pss 19200300}
     pilot OBJECT IDENTIFIER ::= {ucl 100}

     pilotAttributeType OBJECT IDENTIFIER ::= {pilot 1}
     pilotAttributeSyntax OBJECT IDENTIFIER ::= {pilot 3}
     pilotObjectClass OBJECT IDENTIFIER ::= {pilot 4}
     pilotGroups OBJECT IDENTIFIER ::= {pilot 10}

     iA5StringSyntax OBJECT IDENTIFIER ::= {pilotAttributeSyntax 4}
     caseIgnoreIA5StringSyntax OBJECT IDENTIFIER ::=
                                           {pilotAttributeSyntax 5}





Barker & Kille                                                 [Page 35]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     -- Standard Object Classes

     top OBJECT-CLASS
         MUST CONTAIN {
             objectClass}
     ::= {objectClass 0}


     alias OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             aliasedObjectName}
     ::= {objectClass 1}


     country OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             countryName}
         MAY CONTAIN {
             description,
             searchGuide}
     ::= {objectClass 2}


     locality OBJECT-CLASS
         SUBCLASS OF top
         MAY CONTAIN {
             description,
             localityName,
             stateOrProvinceName,
             searchGuide,
             seeAlso,
             streetAddress}
     ::= {objectClass 3}


     organization OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             organizationName}
         MAY CONTAIN {
             organizationalAttributeSet}
     ::= {objectClass 4}







Barker & Kille                                                 [Page 36]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     organizationalUnit OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             organizationalUnitName}
         MAY CONTAIN {
             organizationalAttributeSet}
     ::= {objectClass 5}


     person OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             commonName,
             surname}
         MAY CONTAIN {
             description,
             seeAlso,
             telephoneNumber,
             userPassword}
     ::= {objectClass 6}


     organizationalPerson OBJECT-CLASS
         SUBCLASS OF person
         MAY CONTAIN {
             localeAttributeSet,
             organizationalUnitName,
             postalAttributeSet,
             telecommunicationAttributeSet,
             title}
     ::= {objectClass 7}


     organizationalRole OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             commonName}
         MAY CONTAIN {
             description,
             localeAttributeSet,
             organizationalUnitName,
             postalAttributeSet,
             preferredDeliveryMethod,
             roleOccupant,
             seeAlso,
             telecommunicationAttributeSet}
     ::= {objectClass 8}




Barker & Kille                                                 [Page 37]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     groupOfNames OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             commonName,
             member}
         MAY CONTAIN {
             description,
             organizationName,
             organizationalUnitName,
             owner,
             seeAlso,
             businessCategory}
     ::= {objectClass 9}


     residentialPerson OBJECT-CLASS
         SUBCLASS OF person
         MUST CONTAIN {
             localityName}
         MAY CONTAIN {
             localeAttributeSet,
             postalAttributeSet,
             preferredDeliveryMethod,
             telecommunicationAttributeSet,
             businessCategory}
     ::= {objectClass 10}


     applicationProcess OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             commonName}
         MAY CONTAIN {
             description,
             localityName,
             organizationalUnitName,
             seeAlso}
     ::= {objectClass 11}


     applicationEntity OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             commonName,
             presentationAddress}
         MAY CONTAIN {
             description,
             localityName,



Barker & Kille                                                 [Page 38]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


             organizationName,
             organizationalUnitName,
             seeAlso,
             supportedApplicationContext}
     ::= {objectClass 12}


     dSA OBJECT-CLASS
         SUBCLASS OF applicationEntity
         MAY CONTAIN {
             knowledgeInformation}
     ::= {objectClass 13}


     device OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             commonName}
         MAY CONTAIN {
             description,
             localityName,
             organizationName,
             organizationalUnitName,
             owner,
             seeAlso,
             serialNumber}
     ::= {objectClass 14}


     strongAuthenticationUser OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             userCertificate}
     ::= {objectClass 15}


     certificationAuthority OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             cACertificate,
             certificateRevocationList,
             authorityRevocationList}
         MAY CONTAIN {
             crossCertificatePair}
     ::= {objectClass 16}






Barker & Kille                                                 [Page 39]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     -- Standard MHS Object Classes

     mhsDistributionList OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             commonName,
             mhsDLSubmitPermissions,
             mhsORAddresses}
         MAY CONTAIN {
             description,
             organizationName,
             organizationalUnitName,
             owner,
             seeAlso,
             mhsDeliverableContentTypes,
             mhsdeliverableEits,
             mhsDLMembers,
             mhsPreferredDeliveryMethods}
     ::= {mhsObjectClass 0}


     mhsMessageStore OBJECT-CLASS
         SUBCLASS OF applicationEntity
         MAY CONTAIN {
             description,
             owner,
             mhsSupportedOptionalAttributes,
             mhsSupportedAutomaticActions,
             mhsSupportedContentTypes}
     ::= {mhsObjectClass 1}


     mhsMessageTransferAgent OBJECT-CLASS
         SUBCLASS OF applicationEntity
         MAY CONTAIN {
             description,
             owner,
             mhsDeliverableContentLength}
     ::= {mhsObjectClass 2}


     mhsOrganizationalUser OBJECT-CLASS
         SUBCLASS OF organizationalPerson
         MUST CONTAIN {
             mhsORAddresses}
         MAY CONTAIN {
             mhsDeliverableContentLength,
             mhsDeliverableContentTypes,



Barker & Kille                                                 [Page 40]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


             mhsDeliverableEits,
             mhsMessageStoreName,
             mhsPreferredDeliveryMethods }
     ::= {mhsObjectClass 3}


     mhsResidentialUser OBJECT-CLASS
         SUBCLASS OF residentialPerson
         MUST CONTAIN {
             mhsORAddresses}
         MAY CONTAIN {
             mhsDeliverableContentLength,
             mhsDeliverableContentTypes,
             mhsDeliverableEits,
             mhsMessageStoreName,
             mhsPreferredDeliveryMethods }
     ::= {mhsObjectClass 4}


     mhsUserAgent OBJECT-CLASS
         SUBCLASS OF applicationEntity
         MAY CONTAIN {
             mhsDeliverableContentLength,
             mhsDeliverableContentTypes,
             mhsDeliverableEits,
             mhsORAddresses,
             owner}
     ::= {mhsObjectClass 5}




     -- Pilot Object Classes

     pilotObject OBJECT-CLASS
         SUBCLASS OF top
         MAY CONTAIN {
             info,
             photo,
             manager,
             uniqueIdentifier,
             lastModifiedTime,
             lastModifiedBy,
             dITRedirect,
             audio}
     ::= {pilotObjectClass 3}





Barker & Kille                                                 [Page 41]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     pilotPerson OBJECT-CLASS
         SUBCLASS OF person
         MAY CONTAIN {
                     userid,
                     textEncodedORAddress,
                     rfc822Mailbox,
                     favouriteDrink,
                     roomNumber,
                     userClass,
                     homeTelephoneNumber,
                     homePostalAddress,
                     secretary,
                     personalTitle,
                     preferredDeliveryMethod,
                     businessCategory,
                     janetMailbox,
                     otherMailbox,
                     mobileTelephoneNumber,
                     pagerTelephoneNumber,
                     organizationalStatus,
                     mailPreferenceOption,
                     personalSignature}
     ::= {pilotObjectClass 4}


     account OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             userid}
         MAY CONTAIN {
             description,
             seeAlso,
             localityName,
             organizationName,
             organizationalUnitName,
             host}
     ::= {pilotObjectClass 5}


     document OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             documentIdentifier}
         MAY CONTAIN {
             commonName,
             description,
             seeAlso,
             localityName,



Barker & Kille                                                 [Page 42]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


             organizationName,
             organizationalUnitName,
             documentTitle,
             documentVersion,
             documentAuthor,
             documentLocation,
             documentPublisher}
     ::= {pilotObjectClass 6}


     room OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             commonName}
         MAY CONTAIN {
             roomNumber,
             description,
             seeAlso,
             telephoneNumber}
     ::= {pilotObjectClass 7}


     documentSeries OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             commonName}
         MAY CONTAIN {
             description,
             seeAlso,
             telephoneNumber,
             localityName,
             organizationName,
             organizationalUnitName}
     ::= {pilotObjectClass 9}


     domain OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             domainComponent}
         MAY CONTAIN {
             associatedName,
             organizationName,
             organizationalAttributeSet}
     ::= {pilotObjectClass 13}






Barker & Kille                                                 [Page 43]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     rFC822localPart OBJECT-CLASS
         SUBCLASS OF domain
         MAY CONTAIN {
             commonName,
             surname,
             description,
             seeAlso,
             telephoneNumber,
             postalAttributeSet,
             telecommunicationAttributeSet}
     ::= {pilotObjectClass 14}


     dNSDomain OBJECT-CLASS
         SUBCLASS OF domain
         MAY CONTAIN {
             ARecord,
             MDRecord,
             MXRecord,
             NSRecord,
             SOARecord,
             CNAMERecord}
     ::= {pilotObjectClass 15}


     domainRelatedObject OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             associatedDomain}
     ::= {pilotObjectClass 17}


     friendlyCountry OBJECT-CLASS
         SUBCLASS OF country
         MUST CONTAIN {
             friendlyCountryName}
     ::= {pilotObjectClass 18}


     simpleSecurityObject OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             userPassword }
     ::= {pilotObjectClass 19}


     pilotOrganization OBJECT-CLASS
         SUBCLASS OF organization, organizationalUnit



Barker & Kille                                                 [Page 44]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


         MAY CONTAIN {
                     buildingName}
     ::= {pilotObjectClass 20}


     pilotDSA OBJECT-CLASS
         SUBCLASS OF dsa
         MUST CONTAIN {
             dSAQuality}
     ::= {pilotObjectClass 21}


     qualityLabelledData OBJECT-CLASS
         SUBCLASS OF top
         MUST CONTAIN {
             dSAQuality}
         MAY CONTAIN {
             subtreeMinimumQuality,
             subtreeMaximumQuality}
     ::= {pilotObjectClass 22}




     -- Standard Attribute Types

     objectClass ObjectClass
         ::= {attributeType 0}


     aliasedObjectName AliasedObjectName
         ::= {attributeType 1}


     knowledgeInformation ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreString
         ::= {attributeType 2}


     commonName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreStringSyntax
         (SIZE (1..ub-common-name))
         ::= {attributeType 3}


     surname ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreStringSyntax
         (SIZE (1..ub-surname))



Barker & Kille                                                 [Page 45]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


         ::= {attributeType 4}


     serialNumber ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX printableStringSyntax
         (SIZE (1..ub-serial-number))
         ::= {attributeType 5}


     countryName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX PrintableString
         (SIZE (1..ub-country-code))
         SINGLE VALUE
         ::= {attributeType 6}


     localityName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreStringSyntax
         (SIZE (1..ub-locality-name))
         ::= {attributeType 7}


     stateOrProvinceName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreStringSyntax
         (SIZE (1..ub-state-name))
         ::= {attributeType 8}


     streetAddress ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreStringSyntax
         (SIZE (1..ub-street-address))
         ::= {attributeType 9}


     organizationName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreStringSyntax
         (SIZE (1..ub-organization-name))
         ::= {attributeType 10}


     organizationalUnitName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreStringSyntax
         (SIZE (1..ub-organizational-unit-name))
         ::= {attributeType 11}


     title ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreStringSyntax



Barker & Kille                                                 [Page 46]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


         (SIZE (1..ub-title))
         ::= {attributeType 12}


     description ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreStringSyntax
         (SIZE (1..ub-description))
         ::= {attributeType 13}


     searchGuide ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX Guide
         ::= {attributeType 14}


     businessCategory ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreStringSyntax
         (SIZE (1..ub-business-category))
         ::= {attributeType 15}


     postalAddress ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX PostalAddress
         MATCHES FOR EQUALITY
         ::= {attributeType 16}


     postalCode ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreStringSyntax
         (SIZE (1..ub-postal-code))
         ::= {attributeType 17}


     postOfficeBox ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreStringSyntax
         (SIZE (1..ub-post-office-box))
         ::= {attributeType 18}


     physicalDeliveryOfficeName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX caseIgnoreStringSyntax
         (SIZE (1..ub-physical-office-name))
         ::= {attributeType 19}


     telephoneNumber ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX telephoneNumberSyntax
         (SIZE (1..ub-telephone-number))



Barker & Kille                                                 [Page 47]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


         ::= {attributeType 20}


     telexNumber ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX TelexNumber
         (SIZE (1..ub-telex))
         ::= {attributeType 21}


     teletexTerminalIdentifier ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX TeletexTerminalIdentifier
         (SIZE (1..ub-teletex-terminal-id))
         ::= {attributeType 22}


     facsimileTelephoneNumber ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX FacsimileTelephoneNumber
         ::= {attributeType 23}


     x121Address ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX NumericString
         (SIZE (1..ub-x121-address))
         ::= {attributeType 24}


     internationaliSDNNumber ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX NumericString
         (SIZE (1..ub-isdn-address))
         ::= {attributeType 25}


     registeredAddress ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX PostalAddress
         ::= {attributeType 26}


     destinationIndicator ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX PrintableString
         (SIZE (1..ub-destination-indicator))
         MATCHES FOR EQUALITY SUBSTRINGS
         ::= {attributeType 27}


     preferredDeliveryMethod ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX deliveryMethod
         ::= {attributeType 28}




Barker & Kille                                                 [Page 48]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     presentationAddress ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX PresentationAddress
         MATCHES FOR EQUALITY
         ::= {attributeType 29}


     supportedApplicationContext ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX objectIdentifierSyntax
         ::= {attributeType 30}


     member ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX distinguishedNameSyntax
         ::= {attributeType 31}


     owner ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX distinguishedNameSyntax
         ::= {attributeType 32}


     roleOccupant ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX distinguishedNameSyntax
         ::= {attributeType 33}


     seeAlso ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX distinguishedNameSyntax
         ::= {attributeType 34}


     userPassword ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX Userpassword
         ::= {attributeType 35}


     userCertificate ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX UserCertificate
         ::= {attributeType 36}


     cACertificate ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX cACertificate
         ::= {attributeType 37}


     authorityRevocationList ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX AuthorityRevocationList



Barker & Kille                                                 [Page 49]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


         ::= {attributeType 38}


     certificateRevocationList ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX CertificateRevocationList
         ::= {attributeType 39}


     crossCertificatePair ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX CrossCertificatePair
         ::= {attributeType 40}




     -- Standard MHS Attribute Types

     mhsDeliverableContentLength ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX integer
         ::= {mhsAttributeType 0}


     mhsDeliverableContentTypes ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX oID
         ::= {mhsAttributeType 1}


     mhsDeliverableEits ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX oID
         ::= {mhsAttributeType 2}


     mhsDLMembers ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX oRName
         ::= {mhsAttributeType 3}


     mhsDLSubmitPermissions ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX dLSubmitPermission
         ::= {mhsAttributeType 4}


     mhsMessageStoreName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX dN
         ::= {mhsAttributeType 5}






Barker & Kille                                                 [Page 50]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     mhsORAddresses ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX oRAddress
         ::= {mhsAttributeType 6}


     mhsPreferredDeliveryMethods ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX deliveryMethod
         ::= {mhsAttributeType 7}


     mhsSupportedAutomaticActions ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX oID
         ::= {mhsAttributeType 8}


     mhsSupportedContentTypes ATTRIBUTE

         WITH ATTRIBUTE-SYNTAX oID
         ::= {mhsAttributeType 9}


     mhsSupportedOptionalAttributes ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX oID
         ::= {mhsAttributeType 10}




     -- Pilot Attribute Types

     userid ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-user-identifier))
     ::= {pilotAttributeType 1}


     textEncodedORAddress ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
         (SIZE (1 .. ub-text-encoded-or-address))
     ::= {pilotAttributeType 2}


     rfc822Mailbox ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreIA5StringSyntax
             (SIZE (1 .. ub-rfc822-mailbox))



Barker & Kille                                                 [Page 51]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     ::= {pilotAttributeType 3}


     info ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-information))
     ::= {pilotAttributeType 4}


     favouriteDrink ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-favourite-drink))
     ::= {pilotAttributeType 5}


     roomNumber ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-room-number))
     ::= {pilotAttributeType 6}


     photo ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             CHOICE {
                 g3-facsimile [3] G3FacsimileBodyPart
                 }
         (SIZE (1 .. ub-photo))
     ::= {pilotAttributeType 7}


     userClass ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-user-class))
     ::= {pilotAttributeType 8}


     host ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-host))
     ::= {pilotAttributeType 9}






Barker & Kille                                                 [Page 52]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     manager ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             distinguishedNameSyntax
     ::= {pilotAttributeType 10}


     documentIdentifier ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-document-identifier))
     ::= {pilotAttributeType 11}


     documentTitle ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
         (SIZE (1 .. ub-document-title))
     ::= {pilotAttributeType 12}


     documentVersion ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-document-version))
     ::= {pilotAttributeType 13}


     documentAuthor ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             distinguishedNameSyntax
     ::= {pilotAttributeType 14}


     documentLocation ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-document-location))
     ::= {pilotAttributeType 15}


     homeTelephoneNumber ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             telephoneNumberSyntax
     ::= {pilotAttributeType 20}


     secretary ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX



Barker & Kille                                                 [Page 53]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


             distinguishedNameSyntax
     ::= {pilotAttributeType 21}


     otherMailbox ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             SEQUENCE {
                     mailboxType PrintableString, -- e.g. Telemail
                     mailbox IA5String  -- e.g. X378:Joe
             }
     ::= {pilotAttributeType 22}


     lastModifiedTime ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             uTCTimeSyntax
     ::= {pilotAttributeType 23}


     lastModifiedBy ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             distinguishedNameSyntax
     ::= {pilotAttributeType 24}


     domainComponent ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreIA5StringSyntax
             SINGLE VALUE
     ::= {pilotAttributeType 25}


     aRecord ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             DNSRecordSyntax
     ::= {pilotAttributeType 26}


     mXRecord ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             DNSRecordSyntax
     ::= {pilotAttributeType 28}


     nSRecord ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             DNSRecordSyntax
     ::= {pilotAttributeType 29}



Barker & Kille                                                 [Page 54]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     sOARecord ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             DNSRecordSyntax
     ::= {pilotAttributeType 30}


     cNAMERecord ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             iA5StringSyntax
     ::= {pilotAttributeType 31}


     associatedDomain ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreIA5StringSyntax
     ::= {pilotAttributeType 37}


     associatedName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             distinguishedNameSyntax
     ::= {pilotAttributeType 38}


     homePostalAddress ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             postalAddress
             MATCHES FOR EQUALITY
     ::= {pilotAttributeType 39}


     personalTitle ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-personal-title))
     ::= {pilotAttributeType 40}


     mobileTelephoneNumber ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             telephoneNumberSyntax
     ::= {pilotAttributeType 41}


     pagerTelephoneNumber ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             telephoneNumberSyntax
     ::= {pilotAttributeType 42}



Barker & Kille                                                 [Page 55]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     friendlyCountryName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
     ::= {pilotAttributeType 43}


     uniqueIdentifier ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-unique-identifier))
     ::= {pilotAttributeType 44}


     organizationalStatus ATTRIBUTE
             WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-organizational-status))
     ::= {pilotAttributeType 45}


     janetMailbox ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreIA5StringSyntax
             (SIZE (1 .. ub-janet-mailbox))
     ::= {pilotAttributeType 46}


     mailPreferenceOption ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX ENUMERATED {
                 no-list-inclusion(0),
                 any-list-inclusion(1),  -- may be added to any lists
                 professional-list-inclusion(2)
                                         -- may be added to lists
                                         -- which the list provider
                                         -- views as related to the
                                         -- users professional inter-
                                         -- ests, perhaps evaluated
                                         -- from the business of the
                                         -- organisation or keywords
                                         -- in the entry.
                 }
     ::= {pilotAttributeType 47}


     buildingName ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             caseIgnoreStringSyntax
             (SIZE (1 .. ub-building-name))



Barker & Kille                                                 [Page 56]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     ::= {pilotAttributeType 48}


     dSAQuality ATTRIBUTE
             WITH ATTRIBUTE-SYNTAX DSAQualitySyntax
             SINGLE VALUE
     ::= {pilotAttributeType 49}


     singleLevelQuality ATTRIBUTE
             WITH ATTRIBUTE-SYNTAX DataQualitySyntax
             SINGLE VALUE


     subtreeMinimumQuality ATTRIBUTE
             WITH ATTRIBUTE-SYNTAX DataQualitySyntax
             SINGLE VALUE
                -- Defaults to singleLevelQuality
     ::= {pilotAttributeType 51}


     subtreeMaximumQuality ATTRIBUTE
             WITH ATTRIBUTE-SYNTAX DataQualitySyntax
             SINGLE VALUE
                -- Defaults to singleLevelQuality
     ::= {pilotAttributeType 52}


     personalSignature ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             CHOICE {
                 g3-facsimile [3] G3FacsimileBodyPart
                 }
         (SIZE (1 .. ub-personal-signature))
     ::= {pilotAttributeType 53}


     dITRedirect ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             distinguishedNameSyntax
     ::= {pilotAttributeType 54}


     audio ATTRIBUTE
         WITH ATTRIBUTE-SYNTAX
             Audio
         (SIZE (1 .. ub-audio))
     ::= {pilotAttributeType 55}



Barker & Kille                                                 [Page 57]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     documentPublisher ATTRIBUTE
             WITH ATTRIBUTE SYNTAX caseIgnoreStringSyntax
     ::= {pilotAttributeType 56}



     -- Generally useful syntaxes


     caseIgnoreIA5StringSyntax ATTRIBUTE-SYNTAX
             IA5String
             MATCHES FOR EQUALITY SUBSTRINGS


     iA5StringSyntax ATTRIBUTE-SYNTAX
         IA5String
         MATCHES FOR EQUALITY SUBSTRINGS


     -- Syntaxes to support the DNS attributes

     DNSRecordSyntax ATTRIBUTE-SYNTAX
             IA5String
             MATCHES FOR EQUALITY


     NRSInformationSyntax ATTRIBUTE-SYNTAX
             NRSInformation
             MATCHES FOR EQUALITY


     NRSInformation ::=  SET {
                     [0] Context,
                     [1] Address-space-id,
                     routes [2] SEQUENCE OF SEQUENCE {
                     Route-cost,
                     Addressing-info }
             }













Barker & Kille                                                 [Page 58]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


     -- Upper bounds on length of attribute values


     ub-document-identifier INTEGER ::= 256

     ub-document-location INTEGER ::= 256

     ub-document-title INTEGER ::= 256

     ub-document-version INTEGER ::= 256

     ub-favourite-drink INTEGER ::= 256

     ub-host INTEGER ::= 256

     ub-information INTEGER ::= 2048

     ub-unique-identifier INTEGER ::= 256

     ub-personal-title INTEGER ::= 256

     ub-photo INTEGER ::= 250000

     ub-rfc822-mailbox INTEGER ::= 256

     ub-room-number INTEGER ::= 256

     ub-text-or-address INTEGER ::= 256

     ub-user-class INTEGER ::= 256

     ub-user-identifier INTEGER ::= 256

     ub-organizational-status INTEGER ::= 256

     ub-janet-mailbox INTEGER ::= 256

     ub-building-name INTEGER ::= 256

     ub-personal-signature ::= 50000

     ub-audio INTEGER ::= 250000









Barker & Kille                                                 [Page 59]

RFC 1274            COSINE and Internet X.500 Schema       November 1991


Security Considerations

   Security issues are not discussed in this memo.

10.  Authors' Addresses

   Paul Barker
   Department of Computer Science
   University College London
   Gower Street
   London WC1E 6BT
   England

   Phone: +44 71-380-7366
   EMail: P.Barker@cs.ucl.ac.uk


   Steve Kille
   Department of Computer Science
   University College London
   Gower Street
   London WC1E 6BT
   England

   Phone: +44 71-380-7294
   EMail: S.Kille@cs.ucl.ac.uk

   Or send comments to the discussion group: <osi-ds@cs.ucl.ac.uk>.























Barker & Kille                                                 [Page 60]
