The performance of tests to enable a data processing system to recognize entities.
Note: An example of identity authentication is the checking of a password or identity token. [2382-pt.8]

1. A device, such as a metal key or smart card, used for identity authentication. [After 2382-pt.8]
2. [A] Smart card, metal key, or other physical object used to authenticate identity. [INFOSEC-99]

Tests enabling an information system to authenticate users or resources. [INFOSEC-99]

A security policy based on the identities and/or attributes of users, a group of users, or entities acting on behalf of the users and the resources/objects being accessed [7498-2]

Abbreviation for intermediate distribution frame.

1. Interface Definition Language,
2. Interactive Data Language.

Integrated Digital Loop Carrier

A control character that is transmitted when no useful information is being transmitted. [From Weik '89]

A special sequence that indicates that no data are being sent on the channelized side. [T1.509-1995]

The telecommunications service condition that exists whenever user messages are not being transmitted but the service is immediately available for use.