Rec. ITU-T X.402 (09/1992) MESSAGE HANDLING SYSTEMS: OVERALL ARCHITECTURE
FOREWORD
SECTION 1 INTRODUCTION
0 Introduction
1 Scope
2 Normative references
    2.1 Open Systems Interconnection
    2.2 Directory Systems
    2.3 Message Handling Systems
    2.4 Country Codes and Numbering Plans
3 Definitions
    3.1 Open Systems Interconnection
    3.2 Directory Systems
    3.3 Message Handling Systems
4 Abbreviations
5 Conventions
    5.1 ASN.1
    5.2 Grade
    5.3 Terms
SECTION 2 ABSTRACT MODELS
6 Overview
7 Functional model
    7.1 Primary functional objects
    7.2 Secondary functional objects
    7.3 Tertiary functional objects
    7.4 Selected AU types
8 Information model
    8.1 Messages
    8.2 Probes
    8.3 Reports
9 Operational model
    9.1 Transmittal
    9.2 Transmittal roles
    9.3 Transmittal steps
10 Security model
    10.1 Security policies
    10.2 Security services
    10.3 Security elements
SECTION 3 CONFIGURATIONS
11 Overview
12 Functional configurations
    12.1 Regarding the Directory
    12.2 Regarding the Message Store
13 Physical configurations
    13.1 Messaging systems
    13.2 Representative configurations
14 Organizational configurations
    14.1 Management domains
    14.2 Representative configurations
15 The Global MHS
SECTION 4 NAMING, ADDRESSING AND ROUTING
16 Overview
17 Naming
    17.1 Directory names
    17.2 O/R names
18 Addressing
    18.1 Attribute lists
    18.2 Character sets
    18.3 Standard attributes
    18.4 Attribute list equivalence
    18.5 O/R address forms
    18.6 Conditional attributes
19 Routing
SECTION 5 - USE OF THE DIRECTORY
20 Overview
21 Authentication
22 Name resolution
23 DL expansion
24 Capability assessment
SECTION 6 OSI REALIZATION
25 Overview
26 Application service elements
    26.1 The ASE concept
    26.2 Symmetric and asymmetric ASEs
    26.3 Message Handling ASEs
    26.4 Supporting ASEs
27 Application contexts
ANNEX A Directory object classes and attributes
ANNEX B Reference definition of object identifiers
ANNEX C Reference definition of directory object classes and attributes
ANNEX D Security threats
ANNEX E Provision of security services in CCITT Rec. X.411 | ISO/IEC 10021-4
ANNEX F Representation of O/R addresses for human usage
ANNEX G Use of O/R addresses by multinational organizations
ANNEX H Differences between CCITT Recommendation and ISO Standard
ANNEX I Index
ANNEX J Alphabetical list of abbreviations used in this Recommendation