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+BlueZ D-Bus Alert API description
+*********************************
+
+
+Introduction
+------------
+
+Currently, there are two different GATT server profiles that depend on
+receiving alerts or notifications from the platform: Phone Alert Status (PASP)
+and Alert Notification (ANP). PASP is very specific to mobile phones, and also
+allows limited control to alerts (i.e. mute once or switch to a silent mode).
+
+This document presents a unified API that allows to register and notify alerts,
+and to control some alerts (using the provided agent object).
+
+
+Alert hierarchy
+===============
+
+Service		org.bluez
+Interface	org.bluez.Alert1
+Object path	/org/bluez
+
+Methods		void RegisterAlert(string category, object agent)
+
+			Register a new alert category and an agent for it. This
+			means the application will be responsible for notifying
+			BlueZ of any alerts of that category, using the
+			NewAlert() method.
+
+			Supported ANP categories: simple, email, news, call,
+				missed-call, sms-mms, voice-mail, schedule,
+				high-priority, instant-message
+			Supported PASP categories: ringer, vibrate, display
+
+			Possible Errors: org.bluez.Error.InvalidArguments
+
+		void NewAlert(string category, uint16 count, string description)
+
+			Notify BlueZ of new alert(s) for the given category. The
+			description is relative to the last received alert and
+			can be sender name, caller ID, title, or other
+			information specific to the category.
+
+			For ringer, vibrate and display categories, valid
+			descriptions are "active" and "not active". Alerts from
+			ringer category also accept "enabled" and "disabled",
+			depending on whether ringer is in silent mode or not.
+
+			Description must not exceed 18 bytes when encoded in
+			UTF-8 format, otherwise an error is returned. If there
+			is no description, an empty string should be used.
+
+			The count argument contains the number of alerts not
+			yet acknowledged by the user on the UI. To save D-Bus
+			traffic, events that may generate multiple alerts at
+			the same time (like email, sms, news) should trigger a
+			single NewAlert().
+
+			If there are more than 254 new alerts, count must be
+			set to 255. PASP alerts should always set count to 1.
+
+			Possible Errors: org.bluez.Error.InvalidArguments
+
+		void UnreadAlert(string category, uint16 count)
+
+			Some services (like SMS and e-mail) keep track of
+			number of unread items. This method allows to update
+			this counter, so peer devices can be notified using
+			Alert Notification Profile.
+
+			If there are more than 254 unread alerts, count must be
+			set to 255.
+
+			Possible Errors: org.bluez.Error.InvalidArguments
+
+Alert Agent hierarchy
+=====================
+
+Service		org.bluez
+Interface	org.bluez.AlertAgent1
+Object path	freely definable
+
+Methods		void MuteOnce()
+
+			This method is only called if "ringer" alert category
+			is specified when registering the agent.
+
+			Mute the ringer once (e.g. during a incoming call). If
+			ringer is not active, does nothing.
+
+		void SetRinger(string mode)
+
+			This method is only called if "ringer" alert category
+			is specified when registering the agent.
+
+			Set ringer to the specified mode. If mode is "enabled",
+			ringer is set to the default mode, as defined by the
+			current active profile. If mode is "disabled", ringer
+			will not activate on incoming calls, until it is set
+			back to "enabled" mode.
+
+			Possible Errors: org.bluez.Error.InvalidArguments
+
+		void Release()
+
+			Release this agent. At this point, it will not be used
+			by BlueZ anymore and can be destroyed by the owner.