21Fig. 266. System SettingsThis tab is used to define the way in which the External Muteinput functions, for setting the zone lockout security code,to set the clock for 24 hour display and if necessary to set aserial communication display.6.1 External Mute: System Mute Trigger (Fig. 27)The Essentia System has an accessory, the NV-MI1 MuteInterface, which is designed to mute any music playingthrough the system when a doorbell or phone rings, see MI1Mute Interface, pg. 31. When setting the System MuteTrigger, set the mute input to respond to the contact closureprovided by the MI1.5.2 Zones (updated) (Fig. 26)When the desired properties for each zone are set, click onOK. This will return you to the Zones tab. There you will seean updated list of the zones by the number they areassigned, as well as the specific parameters defined in theZone Edit window.Double-clicking on the zones will reopen the edit window,where any of the definition properties can be modified.Fig. 276.2 External Mute: Paging Trigger (Fig. 28)The Essentia System has a built-in solution for whole-housepaging typically through a phone system. The Paging Triggersetting causes the system to mute across all the zones, andin turn, amplifies the page across all zones. Each Zone Editutility in the Configurator Software or the menu at eachControl Pad offers the capability of setting the page volumein each zone.Fig. 28