Sony Ericsson GM48, GM47 manual 17 AT*EXVC, At*Exvc?, At*Exvc=?

GM47/GM48 INTEGRATOR’S MANUAL

4.17 AT*EXVC	Ericsson Set External Volume Control
	Description	Command	Possible Responses
	Sets the maximum	AT*EXVC=<external	•	+CME ERROR: <err>
	volume level on the	volume>	•	OK
	audio lines		• ERROR
	Show the current	AT*EXVC?	•	*EXVC: <external
	setting			volume>
			• +CME ERROR: <err>
			• OK
			• ERROR
	Show if the command	AT*EXVC=?	•	*EXVC: (list of
	is supported			supported <external
				volume>s)

• +CME ERROR: <err>

• OK

• ERROR

Used to set or query whether an external accessory such as the vehicle handsfree controls the audio volume.

By default, the <external volume> is turned off, i.e. the volume over AFMS is controlled by the phone MMI.

The set command is effective only as long as the phone senses that it is connected to an external accessory that has issued the command. Once the phone and the accessory are disconnected the <external volume> setting returns to default.

<external	Description
volume>
0	The phone MMI controls audio volume over AFMS
1	Audio volume over AFMS is output at maximum level that
	is no clipping occurs. An external accessory such as a
	vehicle kit controls the actual volume level heard by the
	user

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