i. APN
ii. Username and password (If necessary.)
b. Reset the device to factory defaults:
i. To restore the device to factory defaults, send the following command: AT&F<CR>
ii. To write current configuration to memory, send the following command: AT&W<CR>
iii. To reset the device, send the following command: AT$RESET<CR>
c. Configure the device to access the GPRS network.
i. To configure the device with the proper APN, send the following command:
AT+CGDCONT=1,”IP”,”apn”<CR> (substitute the letters “APN” for the supplied APN.)
ii. To configure the device with the proper username and password, (if necessary) send the
following command: AT%CGPCO=1,”username,password”,0<CR> (substitute the correct
username and password)
iii. To configure the device to enable auto GPRS registration, send the following command:
AT$AREG=2<CR>
Note: When the device is reset, Windows will detect the detachment of the device
and you may have to close and reopen the communication program to reestablish
communications with the device.
Verify GSM status by sending the following command:
AT+CREG?<CR>
If everything is working, you should receive one of two responses:
+CREG: 0,1 (GSM registered to home network)
OR
+CREG: 0,5 (GSM registered roaming.)
Verify GPRS status by sending the following command: AT%CGREG?<CR>
If everything is working, you should receive one of two responses:
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