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• CCITT Rec. U.204 (11/1988) – INTERWORKING BETWEEN THE TELEX SERVICE AND THE PUBLIC INTERPERSONAL MESSAGING SERVICE
• TABLE OF CONTENTS
• 1 Introduction
  • 1.1 Scope
  • 1.2 Service outline
• 2 Methods of interworking
• 3 Telex access to the IPM service
  • 3.1 One-stage selection
  • 3.2 Two-stage selection
  • 3.3 IPM elements of service in the telex to IPM direction
  • 3.4 Message desposit and format
  • 3.5 Telex message delivery inside the IPM service
  • 3.6 Follow-on call facility
• 4 Access from the IPM service to telex
  • 4.1 General principles
  • 4.2 Conversion
  • 4.3 Message delivery to telex
• 5 Notification messages
  • 5.1 Delivery notification
  • 5.2 Non-delivery notification
  • 5.3 Comined delivery and non-delivery notifications
• 6 Clearing procedures
• 7 Abnormal conditions
  • 7.1 Telex-to-IPMS direction
  • 7.2 IPMS-to-telex direction
• ANNEX A
• Reference