| Message handling system and service overview | 
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                                This revision of ITU-T Rec. F.400/X.400 is a consolidation of Recommendation F.400/X.400 (07/96) and Amendment 1 (09/98). This Recommendation provides an overview of system and service of Message Handling Systems (MHS). It should be considered in conjunction with the F.400-series and X.400-series of Recommendations.  | 
                             
                         
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                                | Citation: | 
                                https://handle.itu.int/11.1002/1000/4848 | 
                             
                            
                                | 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: | 
                                1999-06-18 | 
                             
                            | Identical standard: | ISO/IEC  10021-1:2003 (Twinned) |  
                            
                            | Approval process: | TAP |  
                            
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                                    Status: | 
                                
                                    In force | 
                             
                            
                            
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                                    Maintenance responsibility: | 
                                
                                    ITU-T Study Group 17 | 
                             
                            
                            
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                                    Further details: | 
                                
                                    Patent statement(s) 
                                    
                                    
                                    
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            | Title | 
            Approved on | 
            Download | 
         
        
                
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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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                    | 
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                     | 
                    
                        2020
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                        here
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