ITU T.50

ITU-T recommendation T.50 specifies the International Reference Alphabet (IRA), formerly International Alphabet No. 5 (IA5), a character encoding. ASCII is the U.S. variant of that character set.

The original version from November 1988 corresponds to ISO 646. The current version is from September 1992.

History

At the beginning was the International Telegraph Alphabet No. 2 (ITA2), a five bits code. IA5 is an improvement based on seven bits bytes.

Use

This standard is referenced by other standards such as RFC 3966.

It is also used by some analog modems such as Cisco ones.[1]

This standard is referenced by other standards such as RFC 3939 - Calling Line Identification for Voice Mail Messages.

Standardisation

References

External links


This article is issued from Wikipedia - version of the Tuesday, April 19, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.