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• CCITT Rec. U.80 (11/1988) – INTERNATIONAL TELEX STORE AND FORWARD ACCESS FROM TELEX
• 1 Scope
• 2 Outline of service features
• 3 Outline of facilities
• 4 Access procedures
  • 4.1 General
  • 4.2 Telex access
  • 4.3 Message reference information
  • 4.4 Service request
  • 4.5 Calling telex address
  • 4.6 Commence input signal
  • 4.7 Address input
  • 4.8 Called address validation
  • 4.9 Message input
  • 4.10 End of message (EOM) signal
  • 4.11 End of transaction (EOT)
  • 4.12 Input transaction accepted for delivery signal (ITD)
• 5 Status enquiry
  • 5.1 Status enquiry request
  • 5.2 The status report
• 6 Abnormal conditions during message input
  • 6.1 Telex subscriber clearing during text input without EOT
  • 6.2 Telex subscriber stopping transmission for a certain time without transmitting the EOT signal, or transmitting ...
  • 6.3 Telex subscriber sending WRU to the SFU during text input
  • 6.4 Telex subscriber sending text after the EOT signal
  • 6.5 Telex subscriber clearing after EOT, but before ITD
  • 6.6 Telex subscriber sending national variants of ITA No. 2 alphabet (F, G, H)
  • 6.7 Telex subscriber sending J, Bell combination (J)
  • 6.8 SFU storage capacity overflow during telex message input
  • 6.9 Maximum input duration exceeded
  • 6.10 Repeated characters during message input