Download T900_User Guide_V1.02

Smart Machine Smart Decision
Test Command
AT+CSDT =?
Response
+CSDT: (0-1)
OK
Parameter
See Write Command
Read Command
AT+CSDT?
Response
+CSDT: <mode>
OK
Parameter
See Write Command
Response
AT+CSDT=<mode> OK
ERROR
Write Command
Parameter
<mode>
0 Switch off detecting SIM card
1 Switch on detecting SIM card
Note: when the detecting function is activated, the status of sim card will auto report via the serial port. The
sensing of a hot removal of the SIM is not supported during power saving mode (AT+CFUN=4).
Figure 17: Installation of SIM Card
T900_User Guide_V1.02
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2013-05-22