T.61 is an

ITU-T The International Telecommunication Union Telecommunication Standardization Sector (ITU-T) is one of the three Sectors (branches) of the International Telecommunication Union (ITU). It is responsible for coordinating Standardization, standards fo ...

Recommendation for a

Teletex Teletex was ITU-T specification F.200 for a text and document communications service that could be provided over telephone lines. It was rapidly superseded by e-mail; however, the name ''Teletex'' lives on in several of the X.500 standard attrib ...

character set. T.61 predated

Unicode Unicode or ''The Unicode Standard'' or TUS is a character encoding standard maintained by the Unicode Consortium designed to support the use of text in all of the world's writing systems that can be digitized. Version 16.0 defines 154,998 Char ...

, and was the primary character set in

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. It is broadly used in telecommunications and computer networ ...

used in early versions of X.500 and

X.509 In cryptography, X.509 is an International Telecommunication Union (ITU) standard defining the format of public key certificates. X.509 certificates are used in many Internet protocols, including TLS/SSL, which is the basis for HTTPS, the secure ...

for encoding strings containing characters used in Western European languages. It is also used by older versions of

LDAP The Lightweight Directory Access Protocol (LDAP ) is an open, vendor-neutral, industry standard application protocol for accessing and maintaining distributed Directory service, directory information services over an Internet Protocol (IP) networ ...

. While T.61 continues to be supported in modern versions of X.500 and

, it has been deprecated in favor of

. It is also called Code page 1036, CP1036, or IBM 01036. While ASN.1 does see wide use and the T.61 character set is used on some standards using ASN.1 (for example in

RSA Security RSA Security LLC, formerly RSA Security, Inc. and trade name RSA, is an American computer security, computer and network security company with a focus on encryption and decryption standards. RSA was named after the initials of its co-founders, ...

PKCS Public Key Cryptography Standards (PKCS) are a group of public-key cryptography standards devised and published by RSA Security LLC, starting in the early 1990s. The company published the standards to promote the use of the cryptography te ...

#9), the 1988-11 version of the T.61 standard itself was superseded by a never-published 1993-03 version; the 1993-03 version was withdrawn by the ITU-T. The 1988-11 version is still available. T.61 was one of the encodings supported by

Mozilla Mozilla is a free software community founded in 1998 by members of Netscape. The Mozilla community uses, develops, publishes and supports Mozilla products, thereby promoting free software and open standards. The community is supported institution ...

software in

email Electronic mail (usually shortened to email; alternatively hyphenated e-mail) is a method of transmitting and receiving Digital media, digital messages using electronics, electronic devices over a computer network. It was conceived in the ...

and

HTML Hypertext Markup Language (HTML) is the standard markup language for documents designed to be displayed in a web browser. It defines the content and structure of web content. It is often assisted by technologies such as Cascading Style Sheets ( ...

until 2014, when the supported encodings were limited to those in the

WHATWG The Web Hypertext Application Technology Working Group (WHATWG) is a community of people interested in evolving HTML and related technologies. The WHATWG was founded by individuals from Apple Inc., the Mozilla Foundation and Opera Software, ...

Encoding Standard (although T.61 remained supported for

Code page layout

The following table maps the T.61 characters to their equivalent Unicode code points. See

ITU T.51 The International Telecommunication Union (ITU)In the other common languages of the ITU: * * is a specialized agency of the United Nations responsible for many matters related to information and communication technologies. It was established ...

for a description of how the accents at 0xC0..CF worked. They prefix the letters, as opposed to postfix used by Unicode.

Footnotes

References

External links

ITU-T Recommendation T.61
at ITU-T
ISO-IR-103
(

ISO-IR ISO/IEC 2022 ''Information technology—Character code structure and extension techniques'', is an ISO/IEC standard in the field of character encoding. It is equivalent to the ECMA standard ECMA-35, the ANSI standard ANSI X3.41 and the Japanese ...

registration of right-hand part) {{character encoding Character sets ASN.1 T.61 T.61

Code page layout

See also

Footnotes

References

External links