I.S. ETS 300 169:1993

Foreword
1 Scope
2 Conformance
3 References
4 Definitions
5 Acronyms
6 Concepts and terminology
7 Overview of LAPD functions and procedures
   7.1 General
   7.2 Unacknowledged Operation
   7.3 Acknowledged Operation
   7.4 Establishment of information transfer mode
   7.5 Service characteristics
   7.6 Overview of data link layer structure
8 Frame structure for peer-to-peer communication
   8.1 General
   8.2 Flag sequence
   8.3 Address field
   8.4 Control field
   8.5 Information field
   8.6 Transparency
   8.7 Frame Check Sequence (FCS) field
   8.8 Format convention
   8.9 Invalid frames
   8.10 Frame abort
9 Elements of procedures and formats for data link layer
   peer-to-peer communication
   9.1 General
   9.2 Address field format
   9.3 Address field variables
   9.4 Control field formats
   9.5 Control field parameters and associated state
        variables
   9.6 Frame types
10 Elements for layer-to-layer communication
   10.1 General
   10.2 Primitive procedures
11 Definition of the peer-to-peer procedures of the data
   link layer
   11.1 Procedure for the use of the P/F bit
   11.2 Procedures for unacknowledged information transfer
   11.3 Terminal Endpoint Identifier (TEI) management
        procedures
   11.4 Procedures for establishment and release of
        multiple-frame operation
   11.5 Procedures for information transfer in multiple-frame
        operation
   11.6 Re-establishment of multiple-frame operation
   11.7 Exception condition reporting and recovery
   11.8 Data link layer monitor function
   11.9 List of system parameters
Annex A (informative) Occurrence of the MDL-ERROR-INDICATION
        primitive
Annex B (informative) SDL for point-to-point procedures
Annex C (informative) Re-transmission representation of
        the broadcast procedure
Annex D (informative) State transition tables for point
        to point procedures
History

Specifies the characteristics of the data link layer protocol for use on the D-channel at the S reference point provided by a Private Telecommunication Network (PTN).