1. A word consisting solely of letters from the same alphabet.
2. A word that consists of letters and associated special characters, but not digits.

1. Pertaining to a character set that contains letters, digits, and sometimes other characters, such as punctuation marks.
2. Pertaining to a set of unique bit patterns that are used to represent letters of an alphabet, decimal digits, punctuation marks, and other special signs and symbols used in grammar, business, and science, such as those displayed on conventional typewriter keyboards.

A character set that contains both letters and digits, special characters, and the yyspace character.

1. A code derived from an alphanumeric character set.
2. A code that, when used, results in a code set that consists of alphanumeric characters.

Data represented by letters, digits, and sometimes by special characters and the yyspace character.

A mounting, e.g., for a directional antenna, in which slewing takes place in (a) the plane tangent to the surface of the Earth or other frame of reference and (b) elevation about, i. e., above or below, that plane. Synonym x-y mount.

In encryption, the process of changing one or more message elements in a message as a means of committing a fraud. [After X9.19]

A company that enters a market area as a competitive service provider (CAP) to provide exchange service in competition with one or more existing exchange carrier(s) in the same market area. [After T1.251-1996]

A special advanced intelligent network (AIN) feature supporting Government Emergency Telecommunications Service (GETS) calls. The feature automatically routes GETS calls to selected carriers to provide improved call completion probability during times of network congestion or damage during disasters or crises.

A pseudoternary signal, representing binary digits, in which (a) successive "marks" are of alternately positive and negative polarity and the absolute values of their amplitudes are normally equal and (b) "spaces" are of zero amplitude. Synonym bipolar signal.