AT Commands

some AT commands for Hayes or compatible modems

Show model and EMEI number

ATI
Manufacturer: huawei
Model: E220
Revision: 11.117.09.04.00
IMEI: 354111128111119
+GCAP: +CGSM,+DS,+ES
OK

show IMEI only

AT+CGSN

show IMSI only

AT+CIMI

show registers

AT&V

Get the network signal strength

• the first value.
• Typical values from 5 to 22.
• Minimum acceptable for reliable connections is 12.

AT+CSQ
+CSQ: 16,99
OK

PIN-Actions

provide the pin if activated

AT+CPIN="0000"
OK

Turn off the PIN question

replace xxxx with your own PIN

AT+CLCK="SC",0,"XXXX"

To turn the PIN question on again

AT+CLCK="SC",1,"XXXX"

Check if the PIN question is on or off

"+CLCK: 0" PIN is off, "+CLCK: 1" the PIN is on.

AT+CLCK="SC",2
+CLCK: 1
OK

See also

1. Std.-Commands List
2. Extended Commands List
3. Extended '\'-commands