MC55_ATC_V04.00 Page 404 of 475 3/17/06
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17.5 AT+CMUT Mute control
The AT+CMUT command mutes the microphone input. The command can be used in all audio modes (1 to 6) and
during a voice call only. See AT^SNFS for more details on the various audio modes. As alternative, you can use
the AT^SNFM command.
During an active call, users should be aware that when they switch back and forth between different audio modes
(for example handsfree on/off) the value of <mute> does not change, i.e. the microphone mode is retained until
explicitly changed.
Syntax
Parameter Description
0(P) Mute off
1 Mute on
Test Command
AT+CMUT=?
Response(s)
+CMUT: (list of supported<mute>s)
OK
Read Command
AT+CMUT?
Response(s)
+CMUT: <mute>
OK
ERROR
+CME ERROR: <err>
Write Command
AT+CMUT=<mute>
Response(s)
OK
ERROR
+CME ERROR: <err>
Reference(s) PIN ASC0 ASC1 MUX1 MUX2 MUX3 Charge Last
GSM 07.07 ! % % % % % ! ! !
<mute>(num)