1. Typically corresponds 1-to-1 to Subscriber.
2. Typically corresponds 1-to-1 to IPTV Customer.

1. The property that ensures that the actions of an individual or an institution may be traced uniquely to that individual or institution. [After X9.57]
2. In information systems (IS), the process of tracing IS activities to a responsible source. [INFOSEC-99]
3. In COMSEC, the principle that an individual is entrusted to safeguard and control equipment, keying material, and information… (Read More →)

1. Recording of the exercise of access rights to types of information specified in the System Security policy.
Note: The term "security accounting" may be used to avoid ambiguity. See also: Audit Trail.
2. A mechanism that keeps accurate track of a user's profile, usage, and service charges.

In network management, a set of functions that (a) enables network service use to be measured and the costs for such use to be determined and (b) includes all the resources consumed, the facilities used to collect accounting data, the facilities used to set billing parameters for the services used by customers, maintenance of the data bases used for billing… (Read More →)

1. In computer security, the authorization and approval--granted by a designated authority to a data processing system, computer network, organization, or individual--to process sensitive information or data. [2382-pt.8]
2. Formal declaration by a designated approving authority that an information system (IS) is approved to operate in a particular security mode using a prescribed set of safeguards at an acceptable level… (Read More →)

Synonym designated approving authority.

1. A register in which one operand can be stored and subsequently replaced by the result of an arithmetic or logic operation.
2. A storage register.
3. A storage battery.

The degree of conformity of a measured or calculated value to its actual or specified value.

Abbreviation for automatic call distributor.

A usually two-element lens that is corrected to bring two specified or distinct wavelengths to a common focal point.
Note 1: The term "achromatic" literally means "without color. " This is not strictly true, however. Early lenses consisted of only a single element, and therefore could bring only a single wavelength to a given focal point; i.e., they suffered from… (Read More →)