Ericsson T39 At Command Reference page 33

AT command
AT*EALR?
AT*EALR=3,1,2
Handle the Music Mute Service
This scenario shows an example of how the music mute service can be handled.
It includes:
• Request of the music mute service
• Query current settings
• Indication of music mute on/off
AT command
AT*EMIR=1
AT*EMIR?
Response
*EALR: 3,1,0
OK
*EALV: 3,1,3
...
*EALV: 3,1,0
*EALV: 3,1,3
*EALV: 3,1,0
Response
OK
*EMIR: 1,0
OK
*EMIV: 1
*EMIV: 0
Comment
Query the current settings
Phone responds with the current settings
(Note: The last parameter indicates that the audio is
either disabled or routed elsewhere)
Call answered by using the 'Yes' button on the phone
The audio accessory gets control of the audio lines
Another audio accessory demands the audio lines
The accessory is no longer allowed to use the audio lines
The accessory demands the audio lines
The accessory gets control of the audio lines
The call is disconnected
The accessory is no longer allowed to use the audio lines
Comment
Enable the music mute service
Query the current settings
Phone responds with the current settings
(Note: The last parameter indicates that the music mute
is inactive)
A call is established
Accessory mutes the car stereo
The call is disconnected
Accessory deactivates the mute of the car stereo
AT Commands Phone Terminal Terminated 31