1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Overview
5 Service specification
  5.1 List of services
      5.1.1 Connection establishment/release related services
      5.1.2 Data communication services
      5.1.3 Layer management services
  5.2 Use of the physical layer services
  5.3 Service definitions
      5.3.1 PH-CONNECT.request
      5.3.2 PH-CONNECT.indication
      5.3.3 PH-CONNECT.confirm
      5.3.4 PH-ABORT.request
      5.3.5 PH-ABORT.confirm
      5.3.6 PH-ABORT.indication
      5.3.7 PH-DATA.request
      5.3.8 PH-DATA.indication
6 Protocol specification
  6.1 Physical layer protocol data unit
  6.2 Transmission order and characteristics
  6.3 Physical layer operation - description of the procedures
      6.3.1 General
      6.3.2 Setting up a physical connection
      6.3.3 The identification service
      6.3.4 Data communications
      6.3.5 Disconnection of an existing physical connection
Annex A (informative) An example: PH service primitives and Hayes
        commands
Annex B (informative) Data model and protocol
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography