Data Sheet

SIM900 AT Commands Set
SIM900R01_ATC_V1.00 143 15.01.2010
Parameter
1) If text mode:
“DEL READ” delete all read messages
“DEL UNREAD” delete all unread messages
“DEL SENT” delete all sent SMS
“DEL UNSENT” delete all unsent SMS
“DEL INBOX” delete all received SMS
“DEL ALL” delete all SMS
2) If PDU mode :
1 delete all read messages
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
6.2.29 AT+SIMTONE Generate Specifically Tone
AT+SIMTONE Generate Specifically Tone
Response
+SIMTONE: (0，1), (20-20000), (0-5000), (0-5000), (0-500000)
OK
Test Command
AT+ SIMTONE
=?
Parameters
See Write Command.
Response
OK
ERROR
Write Command
AT+ SIMTONE
=<mode>,<
frequency >,<
periodOn >,<
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
<periodoff> the period of stopping tone
<duration> duration of tones in milliseconds
Reference Note
6.2.30 AT+CCPD Connected Line Identification Presentation Without Alpha String
AT+CCPD Connected Line Identification Presentation Without Alpha String