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X.400, the Glossary

X.400 is a suite of ITU-T recommendations that define the ITU-T Message Handling System (MHS).^[1]

41 relations: Active Directory, Aeronautical Message Handling System, ASN.1, Binary code, BT Group, Business card, Dead letter mail, Directory service, Electronic data interchange, Email, Email client, Encryption, Fax, Gmail, Government Open Systems Interconnection Profile, International Electrotechnical Commission, International Organization for Standardization, International Telecommunication Union, Internet protocol suite, ITU-T, Lightweight Directory Access Protocol, Message Handling System, Message transfer agent, Microsoft Exchange Server, Military Message Handling System, MIME, National Institute of Standards and Technology, NATO, Ned Freed, Orange S.A., OSI model, Postal, telegraph and telephone service, Pretty Good Privacy, Replication (computing), S/MIME, Simple Mail Transfer Protocol, Standardization, Standards organization, Telephone directory, Teleprinter, X.500.
ITU-T X Series Recommendations
OSI protocols

Active Directory

Active Directory (AD) is a directory service developed by Microsoft for Windows domain networks.

Aeronautical Message Handling System

Aeronautical Message Handling System (AMHS) or Air Traffic Services Message Handling System (ATSMHS) is a standard for aeronautical ground-ground communications (e.g. for the transmission of NOTAM, Flight Plans or Meteorological Data) based on X.400 profiles. X.400 and aeronautical Message Handling System are email.

See X.400 and Aeronautical Message Handling System

ASN.1

Abstract Syntax Notation One (ASN.1) is a standard interface description language (IDL) for defining data structures that can be serialized and deserialized in a cross-platform way. X.400 and ASN.1 are ITU-T X Series Recommendations.

See X.400 and ASN.1

Binary code

A binary code represents text, computer processor instructions, or any other data using a two-symbol system.

See X.400 and Binary code

BT Group

BT Group plc (formerly British Telecom) is a British multinational telecommunications holding company headquartered in London, England.

See X.400 and BT Group

Business card

Business cards are cards bearing business information about a company or individual.

See X.400 and Business card

Dead letter mail

Dead letter mail or undeliverable mail is mail that cannot be delivered to the addressee or returned to the sender.

See X.400 and Dead letter mail

Directory service

In computing, a directory service or name service maps the names of network resources to their respective network addresses.

See X.400 and Directory service

Electronic data interchange

Electronic data interchange (EDI) is the concept of businesses electronically communicating information that was traditionally communicated on paper, such as purchase orders, advance ship notices, and invoices.

See X.400 and Electronic data interchange

Email

Electronic mail (email or e-mail) is a method of transmitting and receiving messages using electronic devices.

See X.400 and Email

Email client

An email client, email reader or, more formally, message user agent (MUA) or mail user agent is a computer program used to access and manage a user's email.

See X.400 and Email client

Encryption

In cryptography, encryption is the process of transforming (more specifically, encoding) information in a way that, ideally, only authorized parties can decode.

See X.400 and Encryption

Fax

Fax (short for facsimile), sometimes called telecopying or telefax (short for telefacsimile), is the telephonic transmission of scanned printed material (both text and images), normally to a telephone number connected to a printer or other output device. X.400 and fax are ITU-T recommendations.

See X.400 and Fax

Gmail

Gmail is the email service provided by Google.

See X.400 and Gmail

Government Open Systems Interconnection Profile

The Government Open Systems Interconnection Profile (GOSIP) was a specification that profiled open networking products for procurement by governments in the late 1980s and early 1990s.

See X.400 and Government Open Systems Interconnection Profile

International Electrotechnical Commission

The International Electrotechnical Commission (IEC; Commission électrotechnique internationale) is an international standards organization that prepares and publishes international standards for all electrical, electronic and related technologies – collectively known as "electrotechnology".

See X.400 and International Electrotechnical Commission

International Organization for Standardization

The International Organization for Standardization (ISO) is an independent, non-governmental, international standard development organization composed of representatives from the national standards organizations of member countries.

See X.400 and International Organization for Standardization

International Telecommunication Union

The International Telecommunication Union (ITU)French: Union Internationale des Télécommunications is a specialized agency of the United Nations responsible for many matters related to information and communication technologies.

See X.400 and International Telecommunication Union

Internet protocol suite

The Internet protocol suite, commonly known as TCP/IP, is a framework for organizing the set of communication protocols used in the Internet and similar computer networks according to functional criteria.

See X.400 and Internet protocol suite

ITU-T

The International Telecommunication Union Telecommunication Standardization Sector (ITU-T) is one of the three Sectors (branches) of the International Telecommunication Union (ITU).

See X.400 and ITU-T

Lightweight Directory Access Protocol

The Lightweight Directory Access Protocol (LDAP) is an open, vendor-neutral, industry standard application protocol for accessing and maintaining distributed directory information services over an Internet Protocol (IP) network. X.400 and Lightweight Directory Access Protocol are application layer protocols.

See X.400 and Lightweight Directory Access Protocol

Message Handling System

Message Handling System (MHS) is an important early email protocol developed by Action Technologies, Inc.

See X.400 and Message Handling System

Message transfer agent

Within the Internet email system, a message transfer agent (MTA), mail transfer agent, or mail relay is software that transfers electronic mail messages from one computer to another using the Simple Mail Transfer Protocol.

See X.400 and Message transfer agent

Microsoft Exchange Server

Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft.

See X.400 and Microsoft Exchange Server

Military Message Handling System

Military Message Handling System (MMHS) is a profile and set of extensions to X.400 for messaging in military environments. X.400 and military Message Handling System are email.

See X.400 and Military Message Handling System

MIME

Multipurpose Internet Mail Extensions (MIME) is a standard that extends the format of email messages to support text in character sets other than ASCII, as well as attachments of audio, video, images, and application programs. X.400 and MIME are application layer protocols and email.

See X.400 and MIME

National Institute of Standards and Technology

The National Institute of Standards and Technology (NIST) is an agency of the United States Department of Commerce whose mission is to promote American innovation and industrial competitiveness.

See X.400 and National Institute of Standards and Technology

NATO

The North Atlantic Treaty Organization (NATO; Organisation du traité de l'Atlantique nord, OTAN), also called the North Atlantic Alliance, is an intergovernmental military alliance of 32 member states—30 European and 2 North American.

See X.400 and NATO

Ned Freed

Ned Freed (1959 – 22 May 2022) was an IETF participant and Request for Comments author who contributed to a significant number of Internet Protocol standards, mostly related to email.

See X.400 and Ned Freed

Orange S.A.

Orange S.A. (formerly France Télécom S.A., stylised as france telecom) is a French multinational telecommunications company.

See X.400 and Orange S.A.

OSI model

The Open Systems Interconnection (OSI) model is a reference model from the International Organization for Standardization (ISO) that "provides a common basis for the coordination of standards development for the purpose of systems interconnection." In the OSI reference model, the communications between systems are split into seven different abstraction layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application. X.400 and OSI model are ISO standards, ITU-T X Series Recommendations and ITU-T recommendations.

See X.400 and OSI model

Postal, telegraph and telephone service

A postal, telegraph, and telephone service (or PTT) is a government agency responsible for postal mail, telegraph, and telephone services.

See X.400 and Postal, telegraph and telephone service

Pretty Good Privacy

Pretty Good Privacy (PGP) is an encryption program that provides cryptographic privacy and authentication for data communication.

See X.400 and Pretty Good Privacy

Replication (computing)

Replication in computing involves sharing information so as to ensure consistency between redundant resources, such as software or hardware components, to improve reliability, fault-tolerance, or accessibility.

See X.400 and Replication (computing)

S/MIME

S/MIME (Secure/Multipurpose Internet Mail Extensions) is a standard for public-key encryption and signing of MIME data.

See X.400 and S/MIME

Simple Mail Transfer Protocol

The Simple Mail Transfer Protocol (SMTP) is an Internet standard communication protocol for electronic mail transmission.

See X.400 and Simple Mail Transfer Protocol

Standardization

Standardization (American English) or standardisation (British English) is the process of implementing and developing technical standards based on the consensus of different parties that include firms, users, interest groups, standards organizations and governments.

See X.400 and Standardization

Standards organization

A standards organization, standards body, standards developing organization (SDO), or standards setting organization (SSO) is an organization whose primary function is developing, coordinating, promulgating, revising, amending, reissuing, interpreting, or otherwise contributing to the usefulness of technical standards to those who employ them.

See X.400 and Standards organization

Telephone directory

A telephone directory, commonly called a telephone book, telephone address book, phonebook, or the white and yellow pages, is a listing of telephone subscribers in a geographical area or subscribers to services provided by the organization that publishes the directory.

See X.400 and Telephone directory

Teleprinter

A teleprinter (teletypewriter, teletype or TTY) is an electromechanical device that can be used to send and receive typed messages through various communications channels, in both point-to-point and point-to-multipoint configurations.

See X.400 and Teleprinter

X.500

X.500 is a series of computer networking standards covering electronic directory services. X.400 and X.500 are application layer protocols, ISO standards, ITU-T X Series Recommendations, ITU-T recommendations and OSI protocols.

See X.400 and X.500

References

[1] https://en.wikipedia.org/wiki/X.400

Also known as ADMD, Message handling system, X400.

X.400, the Glossary

Table of Contents

See also

ITU-T X Series Recommendations

OSI protocols

References