An international organization that (a) consists of member bodies that are the national standards bodies of most of the countries of the world, (b) is responsible for the development and publication of international standards in various technical fields, after developing a suitable consensus, (c) is affiliated with the United Nations, and (d) has its headquarters at 1, rue de Varembé,… (Read More →)

The combination of digits to be dialed by a calling subscriber making a call to a subscriber in another country to obtain access to the automatic outgoing international equipment. [T
1. Rpt30-1994]

See ITU-R.

See ASCII.

A 3-digit code within the North American numbering plan, beginning with 1, that classifies international calls as requiring either regular or special handling. [T1.104-1988]

The modern form of the metric system, which has been adopted by the United States and most other nations.
Note: The SI is constructed from seven base units for independent physical quantities. Tables showing these values are included below and are current as of Fall
199
5. SI Prefixes. The common metric prefixes are: Multiplication FactorPrefix NamePrefix Symbol1 000 000… (Read More →)

A civil international organization established to promote standardized telecommunications on a worldwide basis.
Note: The ITU-R and ITU-T are committees under the ITU. The ITU headquarters is located in Geneva, Switzerland. While older than the United Nations, it is recognized by the U. N. as the specialized agency for telecommunications.

The Radiocommunications Sector of the International Telecommunication Union (ITU); responsible for studying technical issues related to radiocommunications, and having some regulatory powers.
Note: A predecessor organization was the CCIR.

The Telecommunication Standardization Sector of the International Telecommunication Union (ITU).
Note 1: ITU-T is responsible for studying technical, operating, and tariff Questions and issuing Recommendations on them, with the goal of standardizing telecommunications worldwide.
Note 2: In principle, the ITU-T combines the standards-setting activities of the predecessor organizations formerly called the International Telegraph and Telephone Consultative Committee (CCITT) and the… (Read More →)

An alphabet in which (a) 128 unique 7-bit strings are used to encode upper- and lower-case letters, 10 decimal numerals, special signs and symbols, diacritical marks, data delimiters, and transmission control characters, (b) 12 of the 7-bit strings are not assigned to any letter, numeral, or control character, and (c) the unassigned bit strings are open for use in a… (Read More →)