1     Scope
 2     Normative references
        2.1     Identical Recommendations | International Standards
        2.2     Paired Recommendations | International Standards equivalent in technical content
 3     Definitions
        3.1     Directory definitions
        3.2     Conformance definitions
        3.3     Basic Directory Conformance definitions
 4     Abbreviations
 5     Conventions
 6     Conformance
Annex     A – Directory Operational Binding Management Protocol – Protocol Implementation
Conformance Statement (PICS) proforma (This annex forms an integral part of this Recommendation | International Standard)
        A.1     Identification of the ICS proforma corrigenda
        A.2     Instructions
                  A.2.1     Purpose and structure of the proforma
                  A.2.2     Symbols, terms, and abbreviations
                  A.2.3     Instructions for completing the PICS proforma
        A.3     Identification of the implementation
                  A.3.1     Identification of PICS
                  A.3.2     Identification of the implementation and/or system
                  A.3.3     Identification of the system supplier
                  A.3.4     Identification of the testlab client
        A.4     Identification of the protocol
        A.5     Identification of corrigenda to the protocol
        A.6     ICS proforma tables
                  A.6.1     General capabilities and global statement of conformance
                  A.6.2     Capabilities and options
                  A.6.3     Other information

This Recommendation | International Standard has been produced to facilitate the interconnection of information processing systems to provide directory services. The set of all such systems, together with the directory information which they hold, can be viewed as an integrated whole, called the Directory.The information held by the Directory, collectively known as the Directory Information Base (DIB), is typically used to facilitate communication between, with or about objects such as application entities, people, terminals and distribution lists.
The Directory plays a significant role in Open Systems Interconnection, whose aim is to allow, with a minimum of technical agreement outside of the interconnection standards themselves, the interconnection of information processing systems:
 –     from different manufacturers;
 –     under different managements;
 –     of different levels of complexity; and
 –     of different ages.
To evaluate conformance of a particular implementation, it is necessary to have a statement of which capabilities and options have been implemented for a given OSI protocol. Such statement is called a Protocol Implementation Conformance Statement (PICS).
This Recommendation | International Standard provides the Protocol Implementation Conformance Statement (PICS) proforma for the Directory Operational Binding Protocol (DOP) specified in ITU-T Rec. X.500-Series (1993) | ISO/IEC 9594:1995. All references to the Directory Specifications, made throughout this Recommendation | International Standard, are to the second edition of those specifications (ITU-T Rec. X.500-Series (1993) | ISO/IEC 9495:1995).
Annex A specifies the PICS proforma for the Directory Operational Binding Management Protocol as defined in ITU-T Rec. X.500-Series | ISO/IEC 9594.