• CCITT Rec. T.62 (11/1988) – CONTROL PROCEDURES FOR TELETEX AND GROUP 4 FACSIMILE SERVICES
  • CONTENTS
  • 1 General
    • 1.1 Scope
    • 1.2 Fundamental principles
    • 1.3 Definitions
  • 2 Functions of the procedures
    • 2.1 General
    • 2.2 Background information
  • 3 Elements of procedure
    • 3.1 General
    • 3.2 Session commands, responses and parameters
    • 3.3 Session procedures
    • 3.4 Document commands, responses and parameters
    • 3.5 General rules for document elements of procedure
    • 3.6 Rules for document state diagrams
  • 4 Error recovery
    • 4.1 General principles
    • 4.2 Rules for checkpointing
    • 4.3 Acknowledgement window
  • 5 Coding
    • 5.1 Definition of terms used in coding
    • 5.2 Principles of coding
    • 5.3 Coding of length indicators
    • 5.4 Coding of command and response identifiers for session elements
    • 5.5 Coding of command and response identifiers for document elements
    • 5.6 Coding of parameter group identifiers and parameter identifiers
    • 5.7 Parameter values
  • ANNEX A – Definitions
  • A.1 General
  • A.2 Terms specific to session procedures
  • A.3 Terms specific to document procedures
  • ANNEX B – Telematic modes of operation
  • B.1 Introduction
  • B.2 Telematic modes of operation
  • B.3 Relationship between Telematic modes of operation and the OSI session services
  • ANNEX C – Definition of valid/invalid session protocol data units
  • C.1 Introduction
  • C.2 Invalid protocol data units (PDUs) (definition and rules)
  • C.3 Valid PDUs (rules for mandatory acceptance of PDUs)
  • ANNEX D – General description and rules of operation for state diagrams
  • ANNEX E – Types of document
  • E.1 General
  • E.2 Normal document
  • E.3 Operator document (optional)
  • E.4 Control document
  • E.5 Monitor document (optional)
  • ANNEX F – Interactive session protocol and typed data transfer for the Telematic services
  • ANNEX G – Detailed state transition diagrams for session/document procedures
  • G.1 General
  • G.2 Description on notations
  • G.3 Service primitives
  • G.4 Detailed state transition diagrams for the basic services
  • ANNEX H – State transition tables for session/document procedures
  • H.1 General
  • H.2 Notation details
  • H.3 State tables