Specifications

Smart Machine Smart Decision
SIM900_AT Commands Manual_V1.07 137 2012.12.10
Response
OK
ERROR
If error is related to ME functionality:
+CME ERROR: <err>
Unsolicited Result Code
+CSMINS: <n>,<SIM inserted>
Write Command
AT+CSMINS=
<n>
Parameters
<n> A numeric parameter to show an unsolicited event code
indicating whether the SIM has been inserted or removed.
0 Disable
1 Enable
<SIM inserted> A numeric parameter which indicates whether SIM
card has been inserted.
0 Not inserted
1 Inserted
Reference Note
6.2.16 AT+CLDTMF Local DTMF Tone Generation
AT+CLDTMF Local DTMF Tone Generation
Test Command
AT+CLDTMF=?
Response
+CLDTMF: (1-100),(0-9,A,B,C,D,*,#),(40-100)
OK
Response
OK
ERROR
Write Command
AT+CLDTMF=<
n>,<DTMF
string>[,<basicdu
r>]
Parameters
<n> (1-100) A numeric parameter measured in units of <basicdur>
which indicates the duration of all DTMF tones in <DTMF
string>.
<DTMF string> A string parameter (string should be included in
quotation marks) which has a max length of 20 chars of form
<DTMF>, separated by commas.
<DTMF> A single ASCII chars in the set 0-9,#,*,A-D.
<basicdur> (40-100) A numeric parameter in terms of ms which
indicates the basic duration time, default value is 100.
Execution
Command
AT+CLDTMF
Response
OK
Abort any DTMF tone currently being generated and any DTMF tone
sequence.