Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 143 12/24/2010
(supported range = 3- 15300000)
Reference Note
z The default <tone>, if none is entered, it should be General Beep.
z The default <duration>, if none is entered, it should be 500ms.
6.2.32 AT+SIMTONE Generate Specifically Tone
AT+SIMTONE Generate Specifically Tone
Response
+SIMTONE: (0,1),(20-20000),(200-25500),(0,100-25500),(0-500000)
OK
Test Command
AT+SIMTONE
=?
Parameters
See Write Command
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Write Command
AT+SIMTONE
=<mode>,<frequ
ency>,<periodO
n>,<periodOff>[,
<duration>]
Parameters
<mode> 0 Stop playing tone
1 Start playing tone
<frequency> the frequency of tone to be generated
<periodOn> the period of generating tone, must be multiple of 100
<periodOff> the period of stopping tone, must be multiple of 100
<duration> duration of tones in milliseconds
Reference Note
6.2.33 AT+CCPD Enable or Disable Alpha String
AT+CCPD Enable or Disable Alpha String
Response
+CCPD: (0,1)
OK
Test Command
AT+CCPD=?
Parameter
See Write Command
Response
+CCPD: <mode>
OK
Read Command
AT+CCPD?
Parameter
See Write Command