SARA-U2 series EVK - User Guide
UBX-14001743 - R05
Starting up
Page 9 of 21
When using USB drivers for Windows, if a dial-up connection is created and then started on the “Modems
Type” interface (USB1), the following commands are issued to the module through USB1 during the dial-
up initialization phase:
AT&F&D2&C1S0=0<cr> ATE0V1<cr> AT\Q0<cr>
These commands reset all profile parameters to the factory-programmed values. This is strictly related to
the provided Windows modem driver, and is not controlled by the FW module. If needed, profile
parameters other than the factory-programmed values must be set after the dial up connection is
disconnected.
9.
Run an AT terminal application (e.g. the u-blox m-center tool) on proper PC COM port, with these settings:
o
Data rate: 115200 b/s
o
Data bits: 8
o
Parity: N
o
Stop bits: 1
o
Flow control: HW
See Appendix A for how to configure the u-blox m-center AT terminal for Windows.
10.
Connect the headset provided with the evaluation kit box to the
Headset jack
connector (J303 on EVB), if
the audio functionality is required.
1.9
Enabling verbose error result codes
Command sent by DTE (user) DCE response (module)
Description
AT+CMEE=2
OK
Enables the cellular module to report verbose error result codes.
1.10
PIN code insertion (when required)
Command sent by DTE (user) DCE response (module)
Description
AT+CPIN="8180"
OK
Enter the PIN code, if needed (enter the PIN of the SIM card – 8180 is
written here as an example).
AT+CLCK="SC",0,"8180"
OK
Unlock the PIN at power on (the last parameter is the PIN of the SIM card
– 8180 is written here as an example).
AT+CLCK="SC",1,"8180"
OK
Lock the PIN at power on (the last parameter is the PIN of the SIM card –
8180 is written here as an example).
1.11
Registration on a cellular network
Command sent by DTE (user) DCE response (module)
Description
AT+CREG?
+CREG: 0, 1
OK
Verify the network registration.
AT+COPS=0
OK
Register the module on the network.
The cellular module automatically registers itself on the cellular network.
This command is necessary only if the automatic registration failed
(AT+CREG? returns 0,0).
AT+URAT=1,2
OK
Select radio access technology: 1=GSM/UMTS dual mode; 2=UMTS.
AT+COPS?
+COPS: 0,0,"I TIM",2
OK
Read the operator name; 2 means radio access UMTS.
