1. A frequency that is allocated and assigned by a competent authority to a specific user for a specific purpose.
2. The frequency, or frequency range, assigned to a station by the Commission [FCC] and specified in the instrument of authorization. [47CFR] Seeassigned frequency.

The highest level issuer of authorization certificates in an organization.
Note: Authorized signatories are designated in a signatory certificate, which is issued to an organization by an agreed signatory authority. [After X9.45]

In security, a user who may, according to an organization's security policy, perform an operation. [After CC-99]

In e-mail systems, a message sent automatically upon receipt of incoming e-mail.
Note: Auto-replies are used to acknowledge delivery of e-mail and to provide receipts for e-mail messages.

Acronym for automatic digital network. See Defense Data Network.

Synonym machine-readable medium.

1. An assembly of computer hardware, software, firmware, or any combination of these, configured to accomplish specific information-handling operations, such as communication, computation, dissemination, processing, and storage of information.
2. [In INFOSEC,] any equipment or interconnected system or subsystems of equipment that is used in the automatic acquisition, storage, manipulation, management, movement, control, display, switching, interchange, transmission or reception of… (Read More →)

1. Measures and controls that ensure confidentiality, integrity, and availability of the information processed and stored by automated information systems.
Note 1: The unauthorized disclosure, modification, or destruction may be accidental or intentional.
Note 2: Automated information systems security includes consideration of all hardware and software functions, characteristics and features; operational procedures; accountability procedures; and access controls at the central… (Read More →)

An automatic, integrated and interconnected maritime communications system serving ship stations on specified inland and coastal waters of the United States. [47CFR]

A radio that can be automatically controlled by electronic devices and that requires little or no human intervention.