Smart Messaging hierarchy
===============

Service		org.ofono
Interface	org.ofono.SmartMessaging
Object path	[variable prefix]/{modem0,modem1,...}

Methods		object SendAppointment(string to, array{bytes} appointment)

			Sends a vCalendar object in appointment to the number
			in to.  The object in appointment is not interpreted
			by oFono in any way.  If the object is too large to
			fit into a single SMS, it is fragmented as appropriate.
			This method call returns the object path of the queued
			SMS.

		object SendBusinessCard(string to, array{bytes} card)

			Sends a vCard object in card to the number in to. The
			object in card is not interpreted by oFono in any way.
			If the object is too large to fit into a single SMS,
			it is fragmented as appropriate.  This method call
			returns the object path of the queued SMS.

		void RegisterAgent(object path)

			Registers an agent which will be called whenever a
			new Smart Messaging based SMS arrives.

		void UnregisterAgent(object path)

			Unregisters an agent.

SmartMessagingAgent Hierarchy [experimental]
===============

Service		unique name
Interface	org.ofono.SmartMessagingAgent
Object path	freely definable

Methods		void ReceiveAppointment(array{byte} appointment, dict info)

			Requests the agent to process a new SMS that has
			arrived containing a vCalendar object.  The info
			dictionary contains 'Sender', 'LocalSentTime' and
			'SentTime' properties.

			Possible Errors: None

		void ReceiveBusinessCard(array{byte} card, dict info)

			Requests the agent to process a new SMS that has
			arrived containing a vCard object.  The info
			dictionary contains 'Sender', 'LocalSentTime' and
			'SentTime' properties.

			Possible Errors: None

		void Release() [noreply]

			Agent is being released, possibly because of oFono
			terminating, SMS interface is being torn down or modem
			off.  No UnregisterAgent call is needed.