Synonym record medium.

1. Traffic that is recorded, in permanent or quasipermanent form, by the originator, the addressee, or both.
2. Traffic that is permanently or semipermanently recorded in response to administrative procedures or public law.

A half-second burst of 1400 Hz applied to a telephone line every 15 seconds to indicate to the called party that the calling party is recording the conversation.
Note: The recorder warning tone is required by law to be generated as an integral part of any recording device used for the purpose and is required to be not under the… (Read More →)

Synonym bit density.

In a facsimile recorder, the spot that is used to generate the recorded copy on the record medium.

In a database management system, the procedures and capabilities available for reconstruction of the contents of a database to a state that prevailed before the detection of processing errors and before the occurrence of a hardware or software failure that resulted in the destruction of some or all of the stored data.

1. [The] action[s] necessary to restore data files of an information system (IS) and computational capability after a system failure. [INFOSEC-99].
2. In data communications, a process whereby a data station attempts to resolve conflicting or erroneous conditions arising during the transfer of data.

[The] designation applied to information systems, and associated areas, circuits, components, and equipment in which national security information is being processed. [INFOSEC-99]

1. [A] Telecommunications or automated information system signal that would divulge classified information if recovered and analyzed. [NIS]
2. In cryptographic systems, a signal containing classified information that has NOT been encrypted.
3. Any electronic emission (e.g., plain text, key, key stream, subkey stream, initial fill, or control signal) that would divulge national security information if recovered. [INFOSEC-99]

[The] Separation of electrical and electronic circuits, components, equipment, and systems that handle national security information (RED), in electrical form, from those that handle non-national security information (BLACK) in the same form. [INFOSEC-99]