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downtime definition - telecom
The time during which a functional machine or system is not functioning properly or is unavailable to users for other reasons. Scheduled downtime is planned in advance for reasons including scheduled maintenance, system updates and patches, and system upgrades. Unscheduled downtime is unplanned downtime due to system or environmental (e.g., power) failures. See also patch, update, upgrade, and uptime.

Webster's New World Telecom Dictionary Copyright © 2008 by Wiley Publishing, Inc., Indianapolis, Indiana.
Used by arrangement with John Wiley & Sons, Inc.

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