BS ISO/IEC 13239:1997

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions, acronyms and abbreviations
    3.1 Definitions
    3.2 Acronyms and abbreviations
4 HDLC frame structure
    4.1 Elements of the frame
    4.2 Transparency
    4.3 Transmission considerations
    4.4 Inter-frame time fill
    4.5 Invalid frame
    4.6 Extensions
    4.7 Addressing conventions
5 GDLC elements of procedures
    5.1 Data link channel states
    5.2 Modes
    5.3 Control field formats
    5.4 Control field parameters
    5.5 Commands and responses
    5.6 Exception condition reporting and recovery
6 HDLC classes of procedures
    6.1 Types of data station
    6.2 Configuration
    6.3 Operational modes
    6.4 Addressing scheme
    6.5 Send and receive state variables
    6.6 Fundamental classes of procedures
    6.7 Optional functions
    6.8 Consistency of classes of procedures
    6.9 Conformance to the HDLC classes of procedures
    6.10 Method of indicating classes and optional functions
    6.11 Unbalanced operation (point-to-point and multipoint)
    6.12 Balanced operation (point-to-point)
    6.13 Unbalanced connectionless operation (point-to
          point and multipoint)
    6.14 Balanced connectionless operation (point to point)
    6.15 Uses of the optional functions
7 General purpose Exchange Identification (XID) frame
    7.1 General purpose XID frame information field
          structure
    7.2 General purpose XID frame information field
          encoding
    7.3 Single-frame exchange negotiation process
    7.4 Frame check sequence negotiation rules
8 Resolution/negotiation of data link layer address in
    switched environments
    8.1 Operational requirements
    8.2 Address resolution
Annexes
A Explanatory notes on the implementation of the frame
    checking sequence
B Example of the use of commands and responses
C Time-out function considerations for NRM, ARM and ABM
D Examples of typical HDLC procedural subsets
E Illustrative examples of FCS negotiation
F Guidelines for communicating with LAPB x.25 DTEs
G Examples of information field encoding in multi-
    selective reject frames
            ?

Defines frame structure elements and classes of procedures, content and format of the general purpose Exchange Identification (XID) frame and a means for resolution/negotiation of a data link layer address in switched environments for data communication systems by means of bit-oriented high-level data link control (HDL C) methods.