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999-call info is split over to the console. E-999 Support Displays indicate the extension and the location of the person who dialled 999.

Notifications of 999 calls are audible, continuous, and distinct from regular ringing patterns when the set is idle and on hook. If the user is already on a call, a new call tone alerts the user to the alarm condition. The alarm overrides sets having DND enabled.

Mitel 3300 Phone System A-Z