A procedure of transferring, in a controlled way, signaling traffic from an alternative signaling route to the normal signaling route when the latter becomes available. [T1.226-1992]

See controlled security operation, multilevel security.

In a communications system, operation in which (a) internal security controls prevent inadvertent disclosures, (b) personnel, physical, and administrative controls are used to prevent unauthorized access, (c) both cleared and uncleared users are serviced, and (d) if required, both secured and unsecured remote terminal areas are serviced.

[A] condition existing when access control is applied to all users and components of an information system (IS). [INFOSEC-99]

Three-dimensional space surrounding information-system (IS) equipment, within which unauthorized persons are denied unrestricted access and are either escorted by authorized persons or are under continuous physical or electronic surveillance. [INFOSEC-99] Synonym restricted area.

In an automated radio, the device that commands the radio transmitter and receiver, and that performs processes, such as automatic link establishment, channel scanning and selection, link quality analysis, polling, sounding, message store and forward, address protection, and anti-spoofing.

[In cryptosystems, the] official responsible for directing the operation of a cryptonet and for managing the operational use and control of keying material assigned to the cryptonet. [INFOSEC-99]

1. In a tristimulus color monitor (i.e., CRT) that employs phosphors excited (driven) by one or more electron beams, the process of controlling the beam(s) to ensure that the individual phosphors representing the color elements within each pixel are properly driven so that (a) within a given pixel there is a proper color balance to ensure the illusion of white,… (Read More →)

A network point at which two or more possible routes through different intermediate networks from the origination network to destination network converge. A convergence point may occur in any network except the origination network. A convergence point for a message transiting in one direction is a branch point for a message transiting in the opposite direction. [T1.118-1992]

The product of (a) the number of messages and, (b) the average minutes of conversation per message. [47 CFR Pt.36-A]