GSM Modules
21
Parameter
<n>
0 Only
ERROR
1 Provide error’s specific number
2 Provide error’s specific number and detailed prompt
3.4 +CPIN: input PIN
Format
This command is used to check PIN status and input PIN. The functions can be
used only after the correct PIN is entered.
Example AT+CPIN=
AT+CPIN?
+CPIN:READY
OK
check PIN status
No need to input new PIN
Example
AT+CPIN?
+CPIN:SIM PIN
AT+CPIN="****"
OK
check PIN status
Need input PIN
Enter correct PIN
Parameter
AT+CPIN?: check if what passwords need to be entered.
+CPIN: READY: don’t need to enter any password.
+CPIN: SIM PIN: need enter PIN.
+CPIN: SIM PUK
:
PIN unlock password
+CPIN: PH-SIM PIN: SIM card bundle password
+CPIN: SIM PIN2: PIN2 password
+CPIN: SIM PUK2: PIN2 unlock password
+CPIN: PH-NET PIN: network password
Pin: string value.
3.5 +CSQ: check signal strength
Description
This command is used to check received signal strength indicator(rssi) and bit error
rate (ber)
Format AT+CSQ
Example AT+CSQ
+CSQ:<rssi>,<ber>
parameters
<rssi>
:
0–113dbm
1-111dbm
2..30–109..-53dbm
31-51dbm
99
:
network unavailable
<ber>
:
0
~
7
:
normal
99
:
network unavailable