Specifications

SIM900 AT Command Manual
SIM900_AT Command Manual_V1.03 142 12/24/2010
2 delete all unread messages
3 delete all sent SMS
4 delete all unsent SMS
5 delete all received SMS
6 delete all SMS
Reference Note
6.2.31 AT+STTONE Play SIM Toolkit Tone
AT+STTONE Play SIM Toolkit Tone
Response
+STTONE: (list of supported <mode>s),(list of supported <tone>s),(list of
supported <duration>s)
OK
If error is related to ME functionality:
+CME ERROR: <err>
Test Command
AT+STTONE=?
Parameters
See Write Command
Response
OK
If error is related to ME functionality:
+CME ERROR: <err>
Write Command
AT+STTONE=<
mode>,<tone>,<
duration>
Parameters
<mode> 0 Stop playing tone
1 Start playing tone
<tone> numeric type
1 Dial Tone
2 Called Subscriber Busy
3 Congestion
4 Radio Path Acknowledge
5 Radio Path Not Available / Call Dropped
6 Error / Special information
7 Call Waiting Tone
8 Ringing Tone
16 General Beep
17 Positive Acknowledgement Tone
18 Negative Acknowledgement or Error Tone
19 Indian Dial Tone
20 American Dial Tone
<duration> numeric type, in milliseconds.
Max requested value = 255*60*1000 = 15300000ms