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• Rec. ITU-T F.601 (1988) – Service and operational principles for packet-switched public data networks
• 1 Introduction
  • 1.1 Definition
  • 1.2 Class of service (Recommendation X.2)
  • 1.3 Types of traffic
• 2 Terms
  • 2.1 data transmission relations
  • 2.2 data service calls
  • 2.3 Other terms
• 3 Access to the service
  • 3.1 Packet mode access
  • 3.2 Start-stop mode access
  • 3.3 Access methods
• 4 International data route
• 5 Duration of service
• 6 Type of call
  • 6.1 Service calls
• 7 Modes of operation
  • 7.1 General provisions
  • 7.2 Automatic operation
  • 7.3 Semi-automatic and manual operation
• 8 Directories - compilation and supply
• 9 Call progress signals on PDNs
• 10 Quality of service
  • 10.1 Service availability
  • 10.2 Percentage of effective calls
  • 10.3 Data throughput
  • 10.4 Bit error rate
  • 10.5 Transmission delay
  • 10.6 Blocking aspects
• 11 Provisions of customer support
  • 11.1 Procedures for updating customer information
  • 11.2 Procedures for updating inter-administration information
  • 11.3 Procedures for handling customer international difficulties