Device Defaults Overview
Each device that registers with a Cisco Unified Communications Manager node is configured with the defaults for that type of device. Device defaults are applied to all auto-registering devices in the cluster. After registration, you can change the device's configuration.
You cannot create new device defaults or delete existing ones, but you can change the default settings that get applied to devices that auto-register.
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Installing a Cisco Unified Communications Manager automatically sets device defaults.