Code page 1036

T.61

Company type	ITU-T Recommendation
Industry	Information technology, Telecommunications
Founded	November 1988 (1988-11)
Fate	Superseded by Unicode
Products	Teletex character encoding scheme
Website	www.itu.int/rec/T-REC-T.61

T.61 is an ITU-T Recommendation defining a Teletex character encoding scheme that predates the advent of Unicode. It served as the main character set within ASN.1 during the initial implementations of X.500 and X.509, facilitating the representation of Western European language symbols. This character set was also utilized by earlier versions of LDAP. Although contemporary X.500 and X.509 standards continue to support T.61, it has been largely superseded by Unicode. The encoding is alternatively identified as Code page 1036, CP1036, or IBM 01036.

ASN.1 remains extensively employed in various protocols, and T.61 persists in certain ASN.1-related specifications, including RSA Security's PKCS #9. The version of the T.61 standard released in November 1988 was replaced by a draft from March 1993 that was never officially published and subsequently withdrawn by ITU-T; therefore, the 1988 edition remains the authoritative reference.

Support for T.61 was provided in Mozilla applications for email and HTML until 2014, after which support was confined to encodings listed in the WHATWG Encoding Standard. Nonetheless, T.61 continues to be supported within the context of LDAP.

Code page layout

The following table presents a mapping between T.61 characters and their corresponding Unicode code points.

Template:Chset-left1	Template:Chset-cell1Template:Chset-cell1Template:Chset-cell1Template:Chset-cell1Template:Chset-cell1Template:Chset-cell1Template:Chset-cell1Template:Chset-cell1	Template:Chset-ctrl1 Template:Chset-cell1 Template:Chset-ctrl1 Template:Chset-cell1 Template:Chset-ctrl1 Template:Chset-ctrl1 Template:Chset-ctrl1 Template:Chset-ctrl1
Template:Chset-left1	Template:Chset-cell1Template:Chset-cell1Template:Chset-cell1Template:Chset-cell1Template:Chset-cell1Template:Chset-cell1Template:Chset-cell1Template:Chset-cell1Template:Chset-cell1Template:Chset-ctrl1Template:Chset-ctrl1Template:Chset-ctrl1Template:Chset-cell1Template:Chset-ctrl1Template:Chset-cell1Template:Chset-cell1
Template:Chset-left1	Template:Chset-ctrl1 Template:Chset-cell1 Template:Chset-cell1 Template:Chset-cell1Template:Chset-cell1 Template:Chset-cell1 Template:Chset-cell1 Template:Chset-cell1 Template:Chset-cell1 Template:Chset-cell1 Template:Chset-cell1 Template:Chset-cell1 Template:Chset-cell1 Template:Chset-cell1 Template:Chset-cell1 Template:Chset-cell1

For comprehensive information on accent characters located at hex range C0–CF, which precede letters as opposed to Unicode’s trailing accent notation, refer to ITU T.51.

See also

• ITU T.51

External links

• ITU-T Recommendation T.61 on the ITU-T website
• ISO-IR-103 (ISO-IR registration for the right-hand section)