Novatel GSM2448UG001, User Manual, Page: 38 / 46

27 novatelwireless.com
GPRS Registration Information which includes the APN (Access Point Name)
Username, and Password (if applicable) should come from the service provider of
the SIM.
Example:
APN = isp.cingular or public IP
Username (If necessary) Username = ISP@CINGULARGPRS.COM
Password (If necessary) Password = CINGULAR1
The following commands listed below are how the GPRS registration information should be
programmed into the device.
AT+CGDCONT=1,”IP”,”<APN>”
Inform the modem of the proper APN
AT%CGPCO=1,”<user>,<pwd>”,0
Inform the modem of the user and password
AT$AREG=2
Enable auto GPRS registration
AT&W
Write current configuration to memory
AT$RESET
Reset the modem
Step 3: Checking if the device can connect to the cellular network.
Once the device is power cycled as per the AT$RESET in Step 2. The following commands
can be used to check that the device can connect to the cellular network.
Refer to the AT command guide for the device being used for more information on the AT
commands listed below.
AT+CREG?
+CREG: 0,1
+CREG: 0,5
Verify GSM status
-GSM registered to home network
-GSM registered roaming
AT%CGREG?
%CGREG: 0,1
%CGREG: 0,5
Verify GPRS status
-GPRS registered to home network
-GPRS registered roaming
AT$NETIP?
Verify GPRS activation
-If the response is non-zero, then everything is working.
AT$CGEER
If AT$NETIP returns all zeros
−no PDP reject cause (Everything should be working OK)
−requested service option not subscribed (APN is incorrect or
SIM has not been enabled for data mode.)
− user authentication failed (username/password is wrong)