Data Sheet

SIM900 AT Commands Set
SIM900R01_ATC_V1.00 93 15.01.2010
Response
+CLVL: <level>
OK
+CME ERROR: <err>
Read Command
AT+CLVL?
Parameter
See Write Command
Response
OK
+CME ERROR: <err>
Write Command
AT+CLVL=<leve
l>
Parameter
<level> 1-100 integer type value with manufacturer specific range
(smallest value represents the lowest sound level)
Reference
GSM 07.07 [13]
Note
3.2.53 AT+CMUT Mute Control
AT+CMUT Mute Control
Response
+CMUT: (list of supported <n>s)
OK
Test Command
AT+CMUT=?
Parameter
see Write Command
Response
+CMUT: <n>
OK
+CME ERROR: <err>
Read Command
AT+CMUT?
Parameter
See Write Command
Response
OK
+CME ERROR: <err>
Write Command
AT+CMUT=<n>
Parameter
<n> 0 mute off
1 mute on
Reference
GSM 07.07 [13]
Note
Only during a call this command can be set successfully.