1. The absolute or relative voltage, current, or power at a particular point in a circuit or system.
2. A tier or layer of a hierarchical system, e.g., the Link-Level protocol, high-level computer language.

The adjustment of transmission levels of single links and of links in tandem to prevent problems such as overloading of transmission subsystems.

1. [The] extent to which protective measures, techniques, and procedures must be applied to information systems (IS) and networks based on risk, threat, vulnerability, system interconnectivity considerations, and information assurance needs. Levels of protection are:
1. Basic: [The] IS and networks requiring implementation of standard minimum security countermeasures.
2. Medium: [The] IS and networks requiring layering of additional safeguards above… (Read More →)

Abbreviation for low frequency.

1. An assembly of objects, routines, programs, etc. , that may be drawn upon for use in the performance of functions. [T1.667-1999]
2. Synonym forum.

Local Exchange Routing Guide

The phases of development and operation of a system from the initial concept to final disposal [CESG].

Acronym for last-in first-out.

In a strict sense, the region of the electromagnetic spectrum that can be perceived by human vision, i.e., the visible spectrum, which is approximately the wavelength range of
0. 4 m to
0. 7 m.
Note 1: In the laser and optical communications fields, custom and practice have extended usage of the term light to include the much broader portion… (Read More →)

A stylus, usually hand-held, that contains a photodetector or light source, and that allows interaction with a computer through a specially designed monitor screen.