• Rec. ITU-T F.182 (1988) – Operational provisions for the international public facsimile service between subscriber stations with group 4 facsimile machines (telefax 4)
  • 1 Introduction
    • 1.1 Scope
    • 1.2 Service definitions
    • 1.4 Restrictions on the use of the Telefax 4 service
  • 2 Network requirements
  • 3 Numbering plan
  • 4 Coding scheme
  • 5 Operation of the Telefax 4 service
    • 5.1 General
    • 5.2 Call phases
    • 5.3 Call identification
    • 5.4 ISDN supplementary services
  • 6 Quality of service
    • 6.1 Class I terminals
    • 6.2 Class II and III terminals
    • 6.3 Error protection
    • 6.4 International routes
    • 6.5 Duration of service
    • 6.6 Observations on the quality of the service
  • 7 Subscriber terminals
    • 7.1 General
    • 7.2 Coding scheme
    • 7.3 No constraints should be made on the type of presentation technology employed.
    • 7.4 Receiving capability
    • 7.5 Alarm indicators
    • 7.6 Terminal identification
    • 7.7 Page format, Telefax 4 service
  • 8 Customer information
    • 8.1 Directories
    • 8.2 Operating instructions
  • 9 Access to facsimile Message Handling Facilities
  • 10 Tariff principles