| Message handling services: Message handling system and service overview |
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| Citation: |
https://handle.itu.int/11.1002/1000/658 |
| Series title: |
F series: Non-telephone telecommunication services
F.400-F.499: Message handling services
X series: Data networks, open system communications and security
X.400-X.499: Message Handling Systems |
| Approval date: |
1993-03-12 |
| Identical standard: | ISO/IEC 10021-1:1992 (Twinned) |
| Approval process: | WTSA |
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Status: |
Superseded |
| Observation: | This Recommendation is published with the double number F.400 and X.400 |
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Maintenance responsibility: |
ITU-T Study Group 17 |
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Further details: |
Patent statement(s)
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ITU-T Supplement
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Title
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Status
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Summary
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Table of contents
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Download
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F Suppl. 1 (11/1988)
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Definitions relating to telegraph, telematic and data transmission services
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In force
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-
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here
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here
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F Suppl. 2 (11/1988)
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Terms and definitions for telex
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In force
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-
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here
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here
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F Suppl. 3 (09/2016)
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Overview of Telecom Finance (Finance2.0)
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In force
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here
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here
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here
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F Suppl. 4 (04/2021)
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Overview of convergence of artificial intelligence and blockchain
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In force
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here
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here
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here
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F Suppl. 5 (07/2026)
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Use cases for communication services of passive sensing equipment based on civilian unmanned aerial vehicles
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In force
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here
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-
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here
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F Suppl. 6 (07/2026)
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Overview of information and communication technology-enabled flying car service platform
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In force
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here
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-
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here
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| Title |
Approved on |
Download |
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Guideline on web-based remote sign language interpretation or video remote interpretation (VRI) system
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2022
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here
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Application of software-defined cameras in the surveillance industry
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2022
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here
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Conformance test specification for ITU-T F.780.1
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2022
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Overview of assistive listening systems
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2020
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here
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