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• CCITT Rec. U.82 (11/1988) – INTERNATIONAL TELEX STORE AND FORWARD – INTERCONNECTION OF TELEX STORE AND FORWARD UNITS
• 1 Scope
• 2 Service outline
• 3 International interconnection
• 4 Message transfer
• 5 Elements of inter-telex SFU message (IM) transfer procedure
• 6 Methods of interworking
• 7 Message transfer unit (MXU) formation
• 8 Message transfer unit (MXU) structure
• 9 MXU information fields
  • 9.1 Type Identity
  • 9.2 Message identity
  • 9.3 Destination telex SFU identity
  • 9.4 Delivery address(es), expected answerback(s), attention information, and delay indication
  • 9.5 Message code indicator
  • 9.6 Delivery information
  • 9.7 Non-delivery notification
  • 9.8 Combined delivery and non-delivery information
  • 9.9 Status request information
  • 9.10 status report information
  • 9.11 Status
  • 9.12 Request type
  • 9.13 Transit identities
• 10 Principles of procedures and coding of inter-telex SFU messages
  • 10.1 Use of the telex network
  • 10.2 Use of direct circuits for asynchronous transmission
  • 10.3 Use of public switched data networks
  • 10.4 Use of the public switched telephone network
  • 10.5 Use of medium speed direct synchronous circuit
• ANNEX A – Examples of field coding and content of MXUs for interconnection of telex SFUs when using the synchronous data ...
• A.1 Introduction
• A.2 Description of data types
• A.3 Format definition of telex SFU MXUs
• APPENDIX I – Examples of field coding and content of MXUs for interconnection of telex SFUs when using the telex network, ...