When do alarm sounds play? - Metasys - LIT-12011953 - Server - Metasys UI - 7.0.50

Metasys UI Help

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Metasys UI
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User Guide
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If you have audible alarms enabled when you log in to the Metasys UI, alarm sounds play immediately if any new alarms already exist. If no new alarms exist when you log in, alarm sounds start playing when a new alarm occurs.
Note: By default, an existing alarm is considered new when you log in if it occurred within the past 15 minutes. The number of minutes is defined by the New entry timeframe setting on the Display tab in Site Settings.
Note: Audible alarms are based on new alarms that are reported in System Activity and Alarm Manager. When an alarm sound is playing it may be for an alarm that is different from what you see in the Alarm Notification Bar.

For Alarm Monitor, audible alarming is always enabled and cannot be disabled. Also see How do I silence alarms? Will silencing alarms silence current alarms or all alarms including new alarms?