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Registration of new charset: tis-620
Much apologies to those who have seen this.
I sent this request out twice on August 17 and 19 but I had not received
my copies back. Ned Freed said the mails were distributed and archived
properly and that I didn't see it because it was a bug on my mailer.
Apparently, there has been no discussion whatsoever on this request.
Upon checking with Harald Alvestrand, he suggested me to resend it for the
third time so that the request complies withthe procedure outlined in RFC
2278.
Regards,
trin
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This is a proposal to register TIS-620 as a charset with IANA.
This charset is to be used as a MIME text/* media type.
Background
TIS-620 is the standard Thai character set used in the Kingdom of
Thailand. The standard was issued by the Thai Industrial Standards
Institute (TISI), the Thai national standard body, in 1986 and re-issued
again in 1990 without changing code-point assignment. It has been in
widely use among Thai communities since then.
The standard was also registered under ISO 2375 by ECMA as ISO-IR-166.
Another attempt was made to register the same charset as ISO/IEC 8859
Part 11. However, this did not succeed because JTC1/SC2 decided that
charsets with non-spacing characters will be issued under a different
series rather than under the 8859.
TIS-620, indeed, specifies two code tables -- one is an eight-bit
extension to the ISO 646 (US-ASCII) standard, the other one is an
extension to the IBM EBCDIC standard.
This registration request is specifically made for the ISO 646 extension
table since this 8-bit charset has been used on the Internet during the
past six years without proper registration. This request does not cover
the EBCDIC version of TIS-620.
While there are several vendor extensions to TIS-620, e.g. CP-874,
MS-874/Windows-874, Mac Thai, etc., TIS-620 is still the most common
denominator and is used for data interchange to maintain full
compatibility among various platforms. Since these extensions are not
fully compatible with TIS-620, they are not covered by this request.
RFC 2278 registration requirements conformance checklist:
3.1 Required characteristics
x The proposed charset is a "Coded Character Set" per definition
described in sect 2.4 of RFC 2278.
x The proposed charset is intended for use in MIME content type
under the "text" top-level type and comforms to the restrictions
of the "text" top-level type in RFC 2045.
x The proposed charset is suitable for use in MIME.
3.2 New charsets
x The proposed charset is NOT a new charset. It was first released by
the national standards body in Thailand, the Thai Industrial
Standards Institute (TISI), in 1986 and revised to the present form
in 1990. There is no change in code-point assignment between these
two versions.
3.3 Naming requirements
x Proposed name for the charset is "TIS-620".
x The name conforms to the ABNF definition in sect 3.3 of RFC 2278.
3.4 Functionality requirement
x The proposed charset functions as an actual charset.
3.5 Usage and implementation requirements
x The proposed charset has been fully adopted by the market and
virtually every computer and software vendor doing business in
Thailand. It is currently the only charset used for thai
information interchange in the country.
3.6 Publication requirements
x The proposed charset has been published by the Thai Industrial
Standards Institute, Ministry of Industry, Royal Thai Government
in 1990.
x An online copy of Thai version of the standard can be viewed at
<http://www.nectec.or.th/it-standards/std620/std620.htm>.
x Code-point assignments for the proposed charset can be viewed at
<http://www.inet.co.th/cyberclub/trin/thairef/tis-620.gif>
x An cross reference table between TIS-620 and ISO/IEC 10646-1
is available at
<http://www.inet.co.th/cyberclub/trin/thairef/tis620-iso10646.html>
x References to the Thai IT standards are published at
<http://www.nectec.or.th/it-standards/> while implementation notes
are available at <http://www.fedu.uec.ac.jp/ZzzThai/references.html>
and <http://thaigate.rd.nacsis.ac.jp/refer/index.html>.
3.7 MIBenum requirements
x A MIBenum value for the proposed charset will be assigned by IANA
at the time of registration.
Charset Name(s):
TIS-620 This charset is to be used as a MIME text/* media type.
Published specification(s):
[TIS_620-2533:1990] Thai Industrial Standards Institute, Ministry of
Industry, Royal Thai Government (1990). UDC 681.3.04:003.62.
ISBN 974-606-153-4.
An online copy of Thai version of the standard can be viewed at
<http://www.nectec.or.th/it-standards/std620/std620.htm>.
Person & email address to contact for further information:
Trin Tantsetthi
c/o Internet Thailand Co Ltd
12th Floor, Bangkok Thai Tower Bldg
108 Rangnam Street, Phyathai
Bangkok, THAILAND 10400
email: trin@mozart.inet.co.th