4G_2G DTU Products Function
- 48 -
◆
Query Operation:
AT+GSMST<CR>
+ok=<status,strength><CR><LF><CR><LF>
◼
Parameter:
◆
status: Module network status.
:
⚫
disconnect: Not connect GPRS network.
⚫
connect: Registered to the GPRS network.
⚫
sIM Not Exist: SIM card does not exist.
◆
Strength: Signal strength, range from 0-31.
2.4.2.43.
AT+ICCID
◼
Function: Query module ICCID code.
◼
Format:
◆
Query:
AT+ICCID<CR>
+ok=<code><CR><LF><CR><LF>
◼
Parameter:
◆
code: ICCID code, length is 20 bytes.
2.4.2.44.
AT+IMEI
◼
Function: Query module IMEI code.
◼
Format:
◆
Query Operation:
AT+IMEI<CR>
+ok=<code><CR><LF><CR><LF>
◼
Parameter:
◆
code: IME code, length is 15 bytes.
2.4.2.45.
AT+IMSI
◼
Function: Query SIM card
’
s MSI number.
◼
Format:
◆
Query Operation:
AT+IMSI<CR>
+ok=<code><CR><LF><CR><LF>
◼
Parameter:
◆
code: IMSI code, length is 15 bytes.
2.4.2.46.
AT+APN
◼
Function: Set/Query APN information.
◼
Format:
◆
Query Operation:
AT+APN<CR>
+ok=<apn,user,password]><CR><LF><CR><LF>
◆
Set Operation:
AT+APN=<apn,user,password><CR>
+ok<CR><LF><CR><LF>
◼
Parameter:
◆
apn: apn information, max 27length
, SET “NA” to
clear setting.
◆
user: apn user, max 21 length.
◆
password: apn password, max 21 length