1 INTRODUCTION
  1.1 PURPOSE
  1.2 SCOPE
  1.3 APPLICABILITY
  1.4 RATIONALE
  1.5 DOCUMENT STRUCTURE
  1.6 CONVENTIONS AND DEFINITIONS
  1.7 REFERENCES
2 OVERVIEW
  2.1 PACKET TELEMETRY SERVICES
  2.2 RELATIONSHIP TO OSI
  2.3 PACKET TELEMETRY LAYERS
  2.4 QUEUED VERSUS BUFFERED SERVICE
3 SOURCE DATA
  3.1 SOURCE DATA OVERVIEW
  3.2 PACKET DATA
  3.3 PRIVATELY DEFINED DATA
  3.4 FRAME SECONDARY HEADER DATA
  3.5 OPERATIONAL CONTROL FIELD DATA
4 LAYER D - SPACE TRANSFER LAYER
  4.1 SPACE TRANSFER LAYER OVERVIEW
  4.2 PACKET TRANSFER (PT_XFR) SERVICE
  4.3 PRIVATELY DEFINED DATA TRANSFER SERVICE
  4.4 VIRTUAL CHANNEL FRAME SECONDARY HEADER SERVICE
  4.5 VIRTUAL CHANNEL OPERATIONAL CONTROL FIELD SERVICE
5 LAYER C - VIRTUAL CHANNEL ACCESS LAYER
  5.1 OVERVIEW OF VIRTUAL CHANNEL ACCESS LAYER
  5.2 VIRTUAL CHANNEL FRAME SERVICE
  5.3 MASTER CHANNEL FRAME SECONDARY HEADER SERVICE
  5.4 MASTER CHANNEL OPERATIONAL CONTROL FIELD SERVICE
  5.5 ADDITIONAL (OPTIONAL) FUNCTIONS OF THIS LAYER
6 LAYER B - CHANNEL ACCESS LAYER
  6.1 OVERVIEW OF CHANNEL ACCESS SERVICE
  6.2 DEFINITIONS AND ABBREVIATIONS
  6.3 CHANNEL ACCESS SERVICE SDU
  6.4 PREREQUISITES FOR THE CHANNEL ACCESS SERVICE
  6.5 SERVICE PRIMITIVES OF THE CHANNEL ACCESS SERVICE
  6.6 CHANNEL ACCESS SERVICE PARAMETERS
  6.7 DETAILED SPECIFICATION OF CHANNEL ACCESS SERVICE
      PRIMITIVES
ANNEX A - ACRONYMS
ANNEX B - INFORMATIVE REFERENCES
ANNEX C - A BRIEF TUTORIAL ON OSI SERVICE TERMINOLOGY
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