1. A character that may be substituted for any of a defined subset of all possible characters.
Note 1: In high-frequency (HF) radio automatic link establishment, the wildcard character "?" may be substituted for any one of the 36 characters, "A" through "Z" and "0" through "
9. "
Note 2: Whether the wildcard character represents a single character or… (Read More →)

Worldwide Interoperability for Microwave Access

Abbreviation for WWMCCS Intercomputer Network.

1. In fiber optics, a band of wavelengths at which an optical fiber is sufficiently transparent for practical use in communications applications. [After FAA] Synonyms spectral window, transmission window.
2. In imagery, a portion of a display surface in which display images pertaining to a particular application can be presented, usually by using a graphical user interface (GUI).
Note: Different… (Read More →)

Sectioning of a video display area into two or more separate regions for the purpose of displaying images from different sources.
Note: In windowing, one window could display data, another motion video from a remote site, and another, graphics.

In telephone switching systems, a single supervisory pulse, i.e., the momentary presence of, or interruption of, a supervisory signal.
Note: An example of a wink is the momentary flash of a supervisory light on an attendant's switchboard.

In telephone switching systems, recurring pulsing in which the off-condition is relatively short compared to the on-condition.
Note: On key-operated telephone instruments, the hold position, i.e., the hold condition, of a line is often indicated by wink pulsing the associated lamp at 120 pulses per minute. During 6% of the pulse period the lamp is off and 94% of the… (Read More →)

An off-hook condition applied to the NI (network interface) by the CI (customer installation) for a timed interval that indicates the CI recognizes a connect signal from the network and will be ready to receive address signals after return to on-hook. [T1.405-1989]

The location of one or more local switching systems; a location where customer loops converge. [T1.222-1991]

Synonym cybercommunity.