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ITU-T X.420 (06/1999)

Information technology – Message Handling Systems (MHS): Interpersonal Messaging System

This Recommendation | International Standard makes use of the enhanced message store defined in ITU-T Rec. X.413 | ISO/IEC 10021-5. It also includes body part definitions for voice, reports and notifications. The ASN.1 is aligned with new ITU-T Rec. X.680 | ISO/IEC 8824-1 and ITU-T Rec. X.880 | ISO/IEC 13712-1, while retaining complete compatibility with the 1988 and 1992 IPM protocols. Numerous defect corrections are incorporated. This revision includes definitions for an extended set of ASN.1 integer values for IPM security error diagnostic codes.

Citation:	https://handle.itu.int/11.1002/1000/4171
Series title:	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 10021-7:2003 (Common)
Approval process:	TAP
Status:	In force
Maintenance responsibility:	ITU-T Study Group 17
Further details:	Patent statement(s)

EditionsImplementer's guide(s)Formal description(s)Related technical papers and reports

Ed.	ITU-T Recommendation	Status	Summary	Table of Contents	Download
5	X.420 (06/1999)	In force	here	here	here
4.6	X.420 (1996) Amd. 3 (09/1998)	Superseded	-	-	here
4.5	X.420 (1996) Technical Cor. 3 (09/1998)	Superseded	-	-	here
4.4	X.420 (1996) Amd. 2 (12/1997)	Superseded	-	-	here
4.3	X.420 (1996) Technical Cor. 2 (12/1997)	Superseded	-	-	here
4.2	X.420 (1996) Amd. 1 (08/1997)	Superseded	here	here	here
4.1	X.420 (1996) Technical Cor. 1 (08/1997)	Superseded	-	here	here
4	X.420 (10/1996)	Superseded	here	here	here
3	X.420 (09/1992)	Superseded	-	here	here
2	X.420 (11/1988)	Superseded	-	here	here
1	X.420 (10/1984)	Superseded	-	-	Not available

Title	Approved on	Download
MHS Implementers' Guide (Version 14, March 2000)	2000-03-01	here
MHS Implementers' Guide (Version 13, July 1995)	1995-07-01	here
MHS Implementers' Guide (Version 8, March 1992)	1992-03-01	here

X.420 (1999-06)

Index of all ASN.1 assignments defined in this Recommendation.

Non official changes applied to these modules so that they compile

Click here to download all the modules of this Recommendation (zipped archive)

Click here to download all the modules needed to compile this Recommendation (zipped archive)

Language	Title	OID	Obs.	Last update
ASN.1	IPMSAbstractService	2.6.1.0.3.0
ASN.1	IPMSAutoActionTypes	2.6.1.0.13.1
ASN.1	IPMSExtendedBodyPartTypes	2.6.1.0.7.0
ASN.1	IPMSExtendedBodyPartTypes2	1.0.10021.7.0.1
ASN.1	IPMSExtendedVoiceBodyPartType	2.6.1.0.11
ASN.1	IPMSFileTransferBodyPartType	2.6.1.0.9
ASN.1	IPMSForwardedContentBodyPartType	2.6.1.0.15
ASN.1	IPMSForwardedReportBodyPartType	2.6.1.0.12
ASN.1	IPMSFunctionalObjects	2.6.1.0.1.0
ASN.1	IPMSHeadingExtensions	2.6.1.0.6.1
ASN.1	IPMSInformationObjects	2.6.1.0.2.1
ASN.1	IPMSMessageStoreAttributes	2.6.1.0.8.1
ASN.1	IPMSObjectIdentifiers	2.6.1.0.0.1
ASN.1	IPMSObjectIdentifiers2	1.0.10021.7.0.0
ASN.1	IPMSSecurityExtensions	2.6.1.0.14.1
ASN.1	IPMSUpperBounds	2.6.1.0.10.1
ASN.1	PKCS7	1.2.840.113549.1.7.0
ASN.1	PKCS7BodyPartType	2.6.1.0.16

Title	Approved on	Download
Guidelines for identity-based cryptosystems used for cross-domain secure communications	2023	here
Overview of hybrid approaches for key exchange with quantum key distribution	2022	here
Guidelines for security management of using artificial intelligence technology	2022	here
Successful use of security standards (2nd edition)	2020	here
Description of the incubation mechanism and ways to improve it	2020	here
Strategic approaches to the transformation of security studies	2020	here

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ITU-T Recommendations

ITU-T X.420 (06/1999)