SECTION 1 - GENERAL
1 Scope
2 Normative references
    2.1 Identical Recommendations/International
          Standards
    2.2 Paired Recommendations/International Standards
          equivalent in technical content
    2.3 Additional references
3 Definitions
    3.1 Reference model definitions
    3.2 Service convention definitions
    3.3 Session service definitions
4 Abbreviations
    4.1 Data units
    4.2 Miscellaneous
    4.3 Service variables
5 Conventions
6 Model of the session service
    6.1 Model of the layer service
    6.2 Model of session connectionless-mode
          transmission
7 Overview of the session service
    7.1 General overview
    7.2 Token concept
    7.3 Synchronization and dialogue unit concepts
    7.4 Activity concept
    7.5 Resynchronization
    7.6 Negotiation
          7.6.1 Negotiation of functional units
          7.6.2 Negotiation of initial token settings
          7.6.3 Negotiation of initial synchronization
                  point serial number
    7.7 Nested session connections
8 Phases and services of the session service
    8.1 Session connection establishment phase
    8.2 Data transfer phase
    8.3 Session connection release phase
9 Functional units and subsets
    9.1 Functional units
          9.1.1 Kernel functional unit
          9.1.1 bis No-orderly-release functional unit
          9.1.2 Negotiated release functional unit
          9.1.3 Half-duplex functional unit
          9.1.4 Duplex functional unit
          9.1.5 Expedited data functional unit
          9.1.6 Typed data functional unit
          9.1.7 Capability data exchange functional unit
          9.1.8 Minor synchronize functional unit
          9.1.9 Symmetric synchronize functional unit
          9.1.10 Data separation functional unit
          9.1.11 Major synchronize functional unit
          9.1.12 Resynchronize functional unit
          9.1.13 Exceptions functional unit
          9.1.14 Activity management functional unit
          9.1.15 Nested connections functional unit
    9.2 Subsets
10 Quality of session service
    10.1 Determination of QOS
    10.2 Session connection QOS negotiation procedures
    10.3 Definition of QOS parameters
          10.3.1 Session connection establishment delay
          10.3.2 Session connection establishment failure
                  probability
          10.3.3 Throughput
          10.3.4 Transit delay
          10.3.5 Residual error rate
          10.3.6 Transfer failure probability
          10.3.7 Session connection release delay
          10.3.8 Session connection release failure
                  probability
          10.3.9 Session connection protection
          10.3.10 Priority
          10.3.11 Session connection resilience
          10.3.12 Extended control parameter
          10.3.13 Optimized dialogue transfer
SECTION 2 - DEFINITION OF CONNECTION-ORIENTED SESSION
SERVICE PRIMITIVES
11 Introduction to session service primitives
    11.1 Summary of primitives
    11.2 Token restrictions on sending primitives
    11.3 Sequencing of primitives
    11.4 Synchronization point serial number management
          11.4.1 Management of single serial
                  synchronization point numbers
          11.4.2 Management of symmetric serial number
                  synchronization point numbers
12 Session connection establishment phase
    12.1 Session connection service
          12.1.1 Function
          12.1.2 Types of primitives and their parameters
          12.1.3 Sequence of primitives
13 Data transfer phase
    13.1 Normal data transfer service
          13.1.1 Function
          13.1.2 Types of primitives and their parameters
          13.1.3 Sequence of primitives
    13.2 Expedited data transfer service
          13.2.1 Function
          13.2.2 Types of primitives and their parameters
          13.2.3 Sequence of primitives
    13.3 Typed data transfer service
          13.3.1 Function
          13.3.2 Types of primitives and their parameters
          13.3.3 Sequence of primitives
    13.4 Capability data exchange service
          13.4.1 Function
          13.4.2 Types of primitives and their parameters
          13.4.3 Sequence of primitives
    13.5 Give tokens service
          13.5.1 Function
          13.5.2 Types of primitives and their parameters
          13.5.3 Sequence of primitives
    13.6 Please tokens service
          13.6.1 Function
          13.6.2 Types of primitives and their parameters
          13.6.3 Sequence of primitives
    13.7 Give control service
          13.7.1 Function
          13.7.2 Types of primitives and their parameters
          13.7.3 Sequence of primitives
    13.8 Minor synchronization point service
          13.8.1 Function
          13.8.2 Types of primitives and their parameters
          13.8.3 Sequence of primitives
    13.9 Major synchronization point service
          13.9.1 Function
          13.9.2 Types of primitives and their parameters
          13.9.3 Sequence of primitives
    13.10 Resynchronize service
          13.10.1 Function
          13.10.2 Types of primitives and their parameters
          13.10.3 Sequence of primitives
    13.11 P-exception reporting service
    13.12 U-exception reporting service
    13.13 Activity start service
    13.14 Activity resume service
    13.15 Activity interrupt service
    13.16 Activity discard service
    13.17 Activity end service
14 Session connection release phase
    14.1 Orderly release service
    14.2 U-abort service
    14.3 P-abort service
15 Sequences of primitives
    15.1 State tables
    15.2 Sequences of primitives at one session
          connection end-point
16 Collision
    16.1 Collision as viewed by the SS-user
    16.2 Collision resolution by the SS-provider
SECTION 3 - DEFINITION OF CONNECTIONLESS-MODE SESSION
SERVICE PRIMITIVES
17 S-UNIT-DATA
    17.1 Function
    17.2 Types of Primitives and Parameters
    17.3 Sequence of Primitives
Annex A - State tables
    A.1 General
    A.2 Notation for state tables
    A.3 Conventions for entries in state tables
    A.4 Actions to be taken by the SS-user
    A.5 Definitions of sets and variables
Figures 1 - 25
Tables 1 - 31
Tables A.1 - A.23