User's Manual

Page 29 of 31
SN. Type AT Command/Respond Explain
1
S AT+CMGD=8 Delete message from preferred memory
location index 8.
2
R OK Delete successfully
4.2.5 SMS Service Center Address Setting
The user can set the SMS service center address, TP-Validity-Period and SMS Data Coding Mode.
SN. Type AT Command/Respond Explain
1
S AT+CSCA=”[phone]”,145 Set the SMS service center address, and the
address will be kept in SIM card.
2
R OK
3
S AT+CSMP=17,167,0,8
Set the TP-Validity-Period as 167 （ 24
hours) ,and the SMS Data Coding Mode as
UCS2
4
R OK
Remark:
1) TP-MTI supports SMS-DELIVER, SMS-SUBMIT and SMS-STATUS-REPORT, while not support SMS-
DELIVER-REPORT, SMS-SUBMIT-REPORT and SMS-COMMAND.
2) TP-PID is 0 by default while TPDU is sending or saving.
3) The Min. length of <pdu> is 8 and the Max. length of <pdu> is 164 while TPDU is sending or saving,.
4) The parameter <stat> can only be 2 for the command AT+CMGW.
5) In TEXT Format, the parameter <fo> can be 17 and 49, the parameter <pid> can only be 0, the parameter
<dcs> can be 0~31 and the parameter <vp> can be 0~255 for AT+CSMP command
6) In TEXT Format, the parameter <stat> can only be ”STO UNSENT” for the command AT+CMGW
4.3 Start-up Mode Switching
In Modem mode, the command AT+BOOTDEV=? can be used for querying the current start-up mode. The response
value “0” means USB Disk start-up mode, and the value “1” means Modem start-up mode.
If user wants to switch the mode from USB Disk start-up to Modem start-up, a special SCSI command whose code is
0xFF and length is 1, needs to send to the module. It can be sent by CreateFile and DeviceIoControl for windows OS.