ATIS Telecom Glossary

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idle code

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

idle state

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

idle time

A period during which a system, circuit, or component is not in use, but is available.

idle-channel noise

Noise that is present in a communications channel when no signals are applied.
Note: The channel conditions and terminations must be stated for idle-channel noise measurements to be meaningful.

idle-line termination

A switch-controlled electrical network that maintains a desired impedance at a trunk or line terminal that is in the idle state.

IdM

Identity Management

IDN

Abbreviation for integrated digital network.

IdP

Identity Provider

IDTV

Abbreviation for improved-definition television.

IEEE

Institute of Electrical and Electronics Engineers

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