Data Sheet

SIM900 AT Commands Set
SIM900R01_ATC_V1.00 92 15.01.2010
Parameter
<mode> 0 normal mode
1 silent mode (all sounds from ME are prevented)
Reference
GSM 07.07 [13]
Note
3.2.51 AT+CRSL Ringer Sound Level
AT+CRSL Ringer Sound Level
Response
+CRSL: (list of supported <level>s)
OK
+CME ERROR: <err>
Test Command
AT+CRSL=?
Parameter
See Write Command
Response
+CRSL: <level>
OK
+CME ERROR: <err>
Read Command
AT+CRSL?
Parameter
See Write Command
Response
OK
+CME ERROR: <err>
Write Command
AT+CRSL=<leve
l>
Parameter
<level> integer type value (1-100) with manufacturer specific range
(smallest value represents the lowest sound level)
Reference
GSM 07.07 [13]
Note
3.2.52 AT+CLVL Loud Speaker Volume Level
AT+CLVL Loud Speaker Volume Level
Response
+CLVL: (list of supported <level>s)
OK
+CME ERROR: <err>
Test Command
AT+CLVL=?
Parameter
see Write Command